Welcome to LookChem.com Sign In|Join Free
  • or
Home > Others > 7440 > 

7440-33-7

Basic Information
CAS No.: 7440-33-7
Name: Tungsten
Article Data: 447
Molecular Structure:
Molecular Structure of 7440-33-7 (Tungsten)
Formula: W
Molecular Weight: 183.85
Synonyms: 5N-W;AW3105;B 10 (metal);BIO;BIO (metal);C 50H;D 100 (metal);D100W;D 20 (metal);FW 1-150;GE-U 10-4795;Osram M-37;PF 17W;RST-U;SG50W;Tungsten element;VA (tungsten);Ventron 00620;W 3KD;W 3N8;WL;WL100;WT;Wolfram;
EINECS: 231-143-9
Density: 19.3
Melting Point: 3410 °C(lit.)
Boiling Point: 5660 ºC
Flash Point: -23°C
Solubility: insoluble in water
Appearance: grey metal chunks or grey powder
Hazard Symbols: FlammableF,HarmfulXn,DangerousN,IrritantXi
Risk Codes: 11-36/38-67-65-62-51/53-48/20-38
Safety: 6-26-36-62-61-36/37
PSA: 0.00000
LogP: 0.00000
Synthetic route

sodium tungstate

7440-33-7

tungsten

Conditions
ConditionsYield
With hydrogen byproducts: NaOH, H2O; redn. at 1100°C;100%
With hydrogen byproducts: Na, O2; no reaction until 700°C, 900°C;100%
With hydrogen byproducts: Na, O2; no reaction until 700°C, 900°C;100%

5Na2O*12WO3*28H2O

7440-33-7

tungsten

Conditions
ConditionsYield
in hydrogen stream at 900°C;100%
in hydrogen stream at 900°C;100%

tungsten(IV) sulfide

A

7704-34-9

sulfur

B

7440-33-7

tungsten

Conditions
ConditionsYield
2000°C, fast react.;A n/a
B 100%
2000°C, fast react.;A n/a
B 100%
1200°C, 2 h;A n/a
B 60%
1200°C, 2 h;A n/a
B 60%

tungsten(VI) oxide

7440-33-7

tungsten

Conditions
ConditionsYield
With magnesium In solid byproducts: MgO; (Ar) milled at room temp. and reaction times from few min up to several h; leached (HCl) under stirring; centrifuged; wached (HCl); wached several times (water); dried at 120°C (air);84%
With hydrogen fluoride In not given Electrolysis; in 4.6 n soln. at 95°C, 0.65-1A per cm2 on mercury cathode, with H2SO4 and HCl complete scale pptn.;20%
With hydrogen fine powder at 80 atm, 550-600°C;
13283-01-7

tungsten(VI) chloride

7440-33-7

tungsten

Conditions
ConditionsYield
With magnesium hydride In toluene byproducts: H2; (argon); refluxing WCl6 and MgH2 in toluene in a mill under continuous grinding (8.5 h); washing (toluene), trituration with EtOH, filtration, boiling with concd. HCl, filtration, washing (H2O; EtOH), drying;82.9%
on annealing single crystal tungsten wire covered with Mo single crystal layer;
pptn. on glowing tungsten wire in vac. at 1600-1700 °C;

tungsten dichloride

7439-95-4

magnesium

7440-33-7

tungsten

Conditions
ConditionsYield
redn. at beginning red heat, leaching with water;61.03%
redn. at beginning red heat, leaching with water;61.03%
incomplete reaction at red head;;
incomplete reaction at red head;;

W6I12

W6(12+)*12Cl(1-)=W6Cl12

A

4Cl(1-)*W6I8(4+)

B

7440-33-7

tungsten

Conditions
ConditionsYield
at 600℃; for 12h; Milling; Sealed tube;A 60%
B n/a
14040-11-0

tungsten hexacarbonyl

99035-49-1

1-[{[Bis-(2-diethylphosphanyl-ethyl)-phosphanyl]-methyl}-(2-diethylphosphanyl-ethyl)-phosphanyl]-2-diethylphosphanyl-ethane

120120-97-0

W2(CO)7(C19H43P5)

114221-42-0

fac,fac-(tungsten)2(carbonyl)6(eHTP)

C

7440-33-7

tungsten

Conditions
ConditionsYield
In xylene N2- or Ar atmosphere; addn. of W(CO)6 and org. compd. to xylol, refluxing (5 d); cooling, evapn. (vac.), filtn., dissoln. CH2Cl2, filtn., recrystn. (CH2Cl2/toluene);A 40%
B n/a
C n/a

tungsten diselenide

A

7782-49-2

selenium

B

7440-33-7

tungsten

Conditions
ConditionsYield
In neat (no solvent, solid phase) heating of WSe2 single crystal flakes enclosed in envelopes made by thin Ta plates by passing current;A 30%
B n/a
In neat (no solvent, solid phase) heating single crystal flakes of WSe2 by current in high vac.;
14040-11-0

tungsten hexacarbonyl

87-85-4

Hexamethylbenzene

A

33505-53-2

W(CO)3(η6-Me6C6)

B

7440-33-7

tungsten

Conditions
ConditionsYield
In decane under Ar, educts added to n-decane, slowly heated to reflux, refluxed for 20 h with periodical shaking, cooled; filtered through SiO2 with CH2Cl2, evapd. in vac., crystals filtered, washed with pentane, dried in vac.;A 28%
B n/a
  • Display:default sort

    New supplier

  • Factory Supply Tungsten

  • Casno:

    7440-33-7

    Factory Supply Tungsten

    Min.Order: 1

    FOB Price:  USD $ 0.0-0.0

    The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

    Ality Chemical, established in 2007, is a comprehensive Chemical Production&Supply Group with Patent Technology as its core. Ality Chemical operates sales branches in Shanghai, Xia

  •  Ality Chemical Corporation

     China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:0513-87616220

    Address:Fine chemical industry park, Nantong,Jiangsu

       Inquiry Now

  • Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

  • Casno:

    7440-33-7

    MSDS/COA Download

    Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

    Min.Order: 1 Metric Ton

    FOB Price:  USD $ 1.0-3.0

    hebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and developm

    Hebei yanxi chemical co. LTD. has expanded a compositive entity from initially only as a small manufacturer. The company dedicated to the development, production and marketing of

  •  Hebei yanxi chemical co.,LTD.

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:86-0311-66561638

    Address:Zhang zhe, guangzong county, xingtai city, hebei province

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 5 Kiloliter

    FOB Price:  USD $ 1.2-5.0

    Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

    Our main production base is located in Xuzhou industry park. We produce a wide range of organics including Fine chemicals, Active pharmaceutical ingredients(APIs), Veterinary, In

  •  Chemwill Asia Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:021-51086038

    Address:High-Tech Industrial park,Chemical Economical Development Zone,Xuzhou, Jiangsu-Province, P.R.China

       Inquiry Now

  • TIANFU-CHEM CAS NO.7440-33-7 Tungsten

  • Casno:

    7440-33-7

    TIANFU-CHEM CAS NO.7440-33-7 Tungsten

    Min.Order: 1 Gram

    FOB Price:  USD $ 0.0-0.0

    Our advantage:Our company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scient

    Our company engages in Electronic chemicals such as OLED,Photoresist chemical,Electrolyte additive and Intermediate Pharmaceutical production; development of noble metal catalysts,

  •  Henan Tianfu Chemical Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-371-55170693/55170694

    Address:Zhengzhou International Trade New Territory,Jinshui District,Zhengzhou ,China

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 9.0-99.0

    Our advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva

    Our company specializes in processing and selling chemical raw materials, chemical th Asia, Europe, America, Africa and other more than 20 countries and regions. ? Companies adheri

  •  Hebei Nengqian Chemical Import and Export Co., LTD

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86 15632961819

    Address:hebei

       Inquiry Now

  • Manufacturer supply CAS 7440-33-7 with best quality

  • Casno:

    7440-33-7

    Manufacturer supply CAS 7440-33-7 with best quality

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 139.0-210.0

    WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

    Zhuo Zhou Wen Xi Import and Export Co., Ltd. is a company mainly engaged in the export of pharmaceutical raw materials. Its parent company is (Wen Xi Pharma), including three subs

  •  Zhuozhou Wenxi import and Export Co., Ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-13111626072

    Address:Room 1710, Baoxin International Phase I, 19 Guanyun East Road, Zhuozhou, Hebei

       Inquiry Now

  • Tungsten 7440-33-7

  • Casno:

    7440-33-7

    Tungsten 7440-33-7

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0

    1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

    Shanghai Upbio Tech Co.,Ltd (Former Onchem (China)Co.,Ltd) is a comprehensive manufacturer and an international distribution of chemicals throughout the world, The predecessor of

  •  Shanghai Upbio Tech Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-21-52196435

    Address:No.2 Floor,No.979 Yunhan Rd,Nicheng,Pudong New Area,Shanghai,China

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 1 Gram

    FOB Price:  USD $ 0.0-0.0

    Product Name: Tungsten Synonyms: TUNGSTEN, POWDER, <10 MICRON, 99.99+%;TUNGSTEN, WIRE, 1.0MM DIAM., 99.99%;TUNGSTEN, FOIL, 0.5MM THICK, 99.9+%;Tungsten, monocrystalline powder, 0.6-1 micron, 99.9+% metals basis;Tungsten wire;Tungsten wire 99

    SHANGHAI MINSTAR CHEMICAL CO., LTD. is a leading, experienced, professional supplier of API & intermediates, plant extract, food additive, fine chemicals and industry chemicals, et

  •  Shanghai Minstar Chemical Co., Ltd

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:0086-21-18019205509

    Address:BUILDING 8, NO.1098, CHUANSHA ROAD, SHANGHAI, CHINA

       Inquiry Now

  • Tungsten CAS:7440-33-7

  • Casno:

    7440-33-7

    Tungsten CAS:7440-33-7

    Min.Order: 1 Gram

    FOB Price:  USD $ 0.0-0.0

    Tungsten CAS:7440-33-7 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic intermediates, st

    Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, speciali

  •  Qingdao Beluga Import and Export Co., LTD

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+8613854236000

    Address:qingdao

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0

    Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai

    Shandong Hanjiang Chemical Co., Ltd. is located in Qilu Petrochemical Industrial Park, Zibo City, Shandong Province, involving pesticide, medicine, chemical industry, coating, dy

  •  Shandong Hanjiang Chemical Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:18369939125

    Address:95A, Xingyuan East Road, Zhangdian District

       Inquiry Now

  • Factory supply  Tungsten

  • Casno:

    7440-33-7

    Factory supply Tungsten

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0

    Tungsten CAS: 7440-33-7 Specification Density 2.4±0.1 g/cm3 Boiling Point 49.2±8.0 °C at 760 mmHg Melting Point -110,5°C Molecular Formula C2Br2F4 Molecular Weight 25

    Lonwin industry group limited.is a comprehensive chemical enterprise which mainly integrates development, production, marketing ,import and export business. The company is located

  •  Lonwin Chemical Group Limited

     China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:Tel: 86-21-59858395

    Address:No#966,Huaxu Road,Shanghai 201702,P.R.China

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

    The company is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds,

  •  Henan Wentao Chemical Product Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-370-2722992

    Address:32 Room, 5th Floor, Building 11, No. 6 Yinxing Road, High-tech Industrial Development Zone, Zhengzhou City, Henan Province

       Inquiry Now

  • Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

  • Casno:

    7440-33-7

    Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

    Min.Order: 10 Kilogram

    FOB Price:  USD $ 0.0-0.0

    Our Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We

    Wuhan Han Sheng New Material Technology Co. Ltd is a professional company which specialized in manufacturing and selling chemical raw materials, chemical products, pharmaceutical i

  •  Wuhan Han Sheng New Material Technology Co.,Ltd

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:17798174412

    Address:Room 401, Floor 4, Building 3-1, Guandong Science and Technology Industrial Park, Jiayuan Road, Guandong Street, Donghu Hi tech Development Zone, Wuhan

       Inquiry Now

  • TUNGSTEN POWDER

  • Casno:

    7440-33-7

    TUNGSTEN POWDER

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

    J&H Chemical is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other

  •  Hangzhou J&H Chemical Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-571-87396432

    Address:No.200 Zhenhua Rd.Xihu Industrial Park, Hangzhou 310030, China

       Inquiry Now

  • Tungsten Manufacturer

  • Casno:

    7440-33-7

    Tungsten Manufacturer

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 100.0-100.0

    HangYu Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. HangYu Chemical consis

    Zibo HangYu Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals

  •  Zibo Hangyu Biotechnology Development Co., Ltd

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-15965530500

    Address:Room1701, Tianxing Building,Licheng district, jinan, Shandong, China

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0

    Superior quality, moderate price & quick delivery. Appearance:grey metal chunks or grey powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:25kg/drum, or as per your request. Application:Used as Pharmaceuti

    Hangzhou Yunuo Chemical Co., Ltd. is located in Hangzhou City, China We are specialized in fine chemicals and basic chemical auxiliary materials, Organic compounds, rubber

  •  HANGZHOU YUNUO CHEMICAL CO.,LTD

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:0571-83715115

    Address:hangzhou

       Inquiry Now

  • Buy Top Purity Tungsten

  • Casno:

    7440-33-7

    Buy Top Purity Tungsten

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Our Advantages A. International Top level TechnologyOur company owned biomedicine experts are famous at home and abroad with rich experience in research and development in the field of efficient chiral functional molecules research and development an

    Jiangsu Qianyu Molecular Technology Co., LTD. Jiangsu Qianyu Molecular Technology is a high-tech medical and health enterprise,located in a developed transportation city Xuzhou, Ch

  •  Jiangsu Qianyu Molecular Technology Co., LTD.

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86 18652199763

    Address:No.2-812, Zhongyin Plaza,Yunlong District

       Inquiry Now

  • Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

  • Casno:

    7440-33-7

    Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 18.0-20.0

    factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B

    Founded in 2008, East Chemsources Limited is a professional manufacturer of supplier in food and beverage, pharmaceuticals, cosmetics and other industries. pharmaceutical field in

  •  EAST CHEMSOURCES LIMITED

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:15053231572

    Address:No.1581-12,Jinshui Road, Licang, Qingdao,China

       Inquiry Now

  • High purity  Tungsten

  • Casno:

    7440-33-7

    High purity Tungsten

    Min.Order: 1 Metric Ton

    FOB Price:  USD $ 1.0-1.0

    High quality, competitive price, fast delivery and first-class service we possesses have won the trust and praise of customers. Standard: BP/USP/EP The purity is equal or greater than 99%. As a supplier, we can provide high-quality products. Cle

    Henan Kanbei Chemical Co., Ltd. is a modern high-tech chemical enterprise integrating R&D, production and sales. The company has strong technical strength, advanced equipment, stri

  •  Henan Kanbei Chemical Co.,LTD

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-152-37804566

    Address:Evergrande Future City, intersection of Zhengkai Avenue and Sixteenth Street, Kaifeng Area, Henan Pilot Free Trade Zone

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 2.0-2.0

    Zhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed

    Welcome to Taizhou Zhenyu Biotech Co.,LTD , Sister Company of Ningbo Zhenlei Chemical co.,ltd ,is a rapid growing company , We are one of TOP supplier and manufactuer of Human APIs

  •  TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:13958565781

    Address:Room 623 Yulan Square Bussiness Building . Jiaojiang Taizhou Zhejiang 318000 China

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0

    Why choice me: √1, We guarantee deeply analyze and demonstrate, purity more than 99% √ 2, Factory outlet with priority price & large stock. √ 3, Special magic vacuum safe package & safe shipping way.All parcel shi

    Zibo Dorne chemical technology co., LTD. Is a comprehensive chemical enterprise integrating r&d, production and sales. It is a leading manufacturer and supplier of chemical product

  •  Zibo Dorne chemical technology co. LTD

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-13583358881

    Address:No. 416, 4th floor, zhongguancun science and technology city, no. 1, west 6th road, zhangdian district

       Inquiry Now

  • Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

  • Casno:

    7440-33-7

    Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

    Min.Order: 1 Metric Ton

    FOB Price:  USD $ 1.5-1.5

    1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

    KAISA GROUP INC.is the enterprise which is specialize in manfacturing and exporting avariety of Chemical in China. We have the strong economic base and comprehensive technology.We

  •  KAISA GROUP INC

    United States  |  Contact Details

    Business Type:Trading Company

    Tel:15131197030

    Address:1312 17th Street Suite 1402 Denver CO 80202

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0

    GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation

    GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production. Currently our major business is: 1.Con

  •  Golden Pharma Co., Limited

    China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:18958062155

    Address:1

       Inquiry Now

  • Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

  • Casno:

    7440-33-7

    Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

    Min.Order: 1 Metric Ton

    FOB Price:  USD $ 1.0-1.0

    We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

    We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production in China for chemicals cus

  •  Bluecrystal chem-union

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-1895157

    Address:Liang Xi Qu

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0

    Ocean inorganic department is a professional supplier and exporter engaging in inorganic chemical materials and metal organic compounds. Over the past years, our company is committed to improving the product quality and developing new products, in

    Hangzhou Ocean Chemical Co.ltd is a comprehensive chemical enterprise which mainly integrates R&D, production, marketing business of chemical in lab-pack, semi-bulk and bulk-quanti

  •  Hangzhou Ocean Chemical Co., Ltd.

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-571-88025872, 28272092, 28272096

    Address:Room 623 ,Building No 1 , COFCO Radius Commercial Center Xiwen Road, Xiacheng District, Hangzhou, Zhejiang Province, China

       Inquiry Now

  • TUNGSTEN

  • Casno:

    7440-33-7

    TUNGSTEN

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Lower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe

    GIHI CHEMICALS CO.,LIMITED, its former company is a small manufacturer who is specialized in the production of ester products which are used in the daily chemicals ,cosmetic produc

  •  GIHI CHEMICALS CO.,LIMITED

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-571-86217390

    Address:No.567 Dengcai Street,Sandun,Westlake District,Hangzhou310030,Zhejiang,China.

       Inquiry Now

  • Tungsten atomic absorption standard solution

  • Casno:

    7440-33-7

    Tungsten atomic absorption standard solution

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou

    Kono Chem Co.,Ltd is a leading producer of standardized herbal extracts, natural active ingredients and APIs for pharmaceutical, health food and cosmetic industries. Annually, mo

  •  Kono Chem Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:86-29-86107037-8015

    Address:No.11 Daqing Road,Lianhu District,Xi’an 710082,China

       Inquiry Now

  • Tungsten atomic absorption standard solution CAS 7440-33-7

  • Casno:

    7440-33-7

    Tungsten atomic absorption standard solution CAS 7440-33-7

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    1.A strong technical force and advanced processing equipments. The quality of the products has been strictly inspected and all kinds of index have reached or exceeded domestic and international standards.2. Now we have established long-term stable re

    Wuxi TAA Chemical Industry Co.,Ltd., established in 2010, is a key chemical manufacturer and supplier in China. In 2010, three young chemists from a local large state-owned chemi

  •  Wuxi TAA Chemical Industry Co.,LTD.

     China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:18168326835

    Address:2202 Scientific Research Business Center, Lihu Road, Wuxi 214128 China

       Inquiry Now

  • Tungsten atomic absorption standard solution CAS 7440-33-7

  • Casno:

    7440-33-7

    Tungsten atomic absorption standard solution CAS 7440-33-7

    Min.Order: 0 Metric Ton

    FOB Price:  USD $ 0.0-0.0

    Name: Tungsten atomic absorption standard solution CAS: 7440-33-7 Molecular Formula: W Molecular Weight: 183.84 Application:Fine chemical

    TNJ is a chemical company since 2001. Our specialization, your confidence-we keep committing to meet the needs of markets and customers with our innovative technology and high stab

  •  Hefei TNJ chemical industry co.,ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-551-65418695

    Address:B911 Xincheng Business Center, Qianshan Road, Hefei Anhui China

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    R & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates

    Hangzhou Dingyan Chem Co., LTD. is located in the beautiful tourist city of hangzhou, is a comprehensive chemical enterprice which doing import and export business by its own comp

  •  Hangzhou Dingyan Chem Co., Ltd

     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:86-571-86465881,86-571-87157530,86-571-88025800

    Address:RM.1118,NO.1 Building, Baiyun Tower,Jianggan Area, Hangzhou city, China,310004

       Inquiry Now

  • Acmec Tungsten 100ml

  • Casno:

    7440-33-7

    Acmec Tungsten 100ml

    Min.Order: 1 bottle

    FOB Price:  USD $ 0.0-0.0

    Acmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea

  •  Shanghai Acmec Biochemical Technology Co., Ltd.

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86--

    Address:Room 1301, No. 1, Lane 1588, South Wangyuan Road, Nanqiao Town, Fengxian District, Shanghai

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    best seller Application:API

    Xi'an Changyue Biotechnology Co., Ltd. was established in October 2003 and is located in Xi'an High-tech Industrial Development Park. It is a company specializing in the extraction

  •  Xian Changyue Biological Technology Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:+86-029-62886900

    Address:Keji Road NO.70

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    1,we produce and sell good chemicals around the world.2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered substances, is 95%.3,our staff consists of highly qualified in

    Wuhan Circle Star Bio-medic Technology co.,Ltd is located in wuhan, the central city of China, the core of the Changjiang river economic belt and known as the "thoroughfare of nin

  •  Wuhan Circle Star Bio-medic Technology co.,Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-13437180835

    Address:Experimental Building 311-15, Nuclear Magnetic Spectrometer Industry Base, No. 128 Guanggu 7th Road, Donghu New Technology Development Zone, Wuhan (Wuhan Area, Free Trade Zone)

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali

    Antimex Chemical Limied, was founded in 2001, we are specializing in manufacturing & researching of Active pharmaceutical Ingredients,Veterinary pharm APIs,cosmetic ingredients,and

  •  Antimex Chemical Limied

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:0086-21-50563169

    Address:Room1027,No.Jinyu Road,Pudong

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    We product this chemical more than 10 years . We are very experience to export it to many countries, Our superior & stable quality , competitive price gain warm reception from our customers. Application:intermediate

    HANGZHOU TIANYE CHEMICALS Co.LTD , Located in Eastern Science and Innovation Park Hangzhou . We are a high-tech enterprise specialized in technical research and development, produc

  •  HANGZHOU TIANYE CHEMICALS CO., LTD.

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:0571-85083592

    Address:1208# HuaCe Building-B,Wuchanggang Road,XIHU District,Hangzhou City,Zhejiang Province ,China

       Inquiry Now

  • Tungsten

  • Casno:

    7440-33-7

    Tungsten

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    best seller Application:API

    DB Biotech co., ltd is a global and professional supplier for plant extracts and functional ingredients, the company is based in XI’an city, which is famous city for the producttio

  •  DB BIOTECH CO., LTD

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:86--1829 2989 553

    Address:No.99 Road, Xi'an, China

       Inquiry Now

  • Tungsten cas  7440-33-7

  • Casno:

    7440-33-7

    Tungsten cas 7440-33-7

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Tungsten cas 7440-33-7Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express

    Welcome to Hangzhou Fandachem Co.,Ltd (www.FandaChem.com) Hangzhou Fandachem Co.,Ltd (Fandachem),an experienced and professional China-based Fine Chemical supplier. We supply the

  •  Hangzhou Fandachem Co.,Ltd

    China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:+86-571-28800458

    Address:Room 5010, No.9 YanAn Road,Hangzhou,Zhejiang,China

       Inquiry Now

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 7440-33-7

History

In 1779 Peter Woulfe examined the mineral now known as wolframite and concluded it must contain a new substance. Carl Wilhelm Scheele, in 1781, found that a new acid could be made from tungsten (a name first applied about 1758 to a mineral now known as scheelite). Scheele and Berman suggested the possibility of obtaining a new metal by reducing this acid. The de Elhuyar brothers found acid in wolframite in 1783 that was identical to the acid of tungsten (tungstic acid) of Scheele, and in that year they succeeded in obtaining the element by reduction of this acid with charcoal. Tungsten occurs in wolframite, scheelite, huebnertie, and ferberite. Important deposits of tungsten occur in California, Colorado, South Korea, Bolivia, Russia, and Portugal. China is reported to have about 75% of the world's tungsten resources. Natural tungsten contains five stable isotopes. Twenty one other unstable isotopes are recognized. The metal is obtained commercially be reducing tungsten oxide with hydrogen or carbon.
In World War II, tungsten played a significant role in background political dealings. Portugal was put under pressure from both sides, because of its deposits of wolframite ore. Tungsten's resistance to high temperatures and its strength in alloys made it an important raw material for the weaponry industry.

Consensus Reports

Reported in EPA TSCA Inventory.

Standards and Recommendations

OSHA PEL: TWA (Insoluble compounds) 5 mg(W)/m3; STEL 10 mg(W)/m3; (soluble compounds) 1 mg(W)/m3; STEL 3 mg(W)/m3
ACGIH TLV: TWA (Insoluble compounds) 5 mg(W)/m3; STEL 10 mg(W)/m3; (soluble compounds) 1 mg(W)/m3; STEL 3 mg(W)/m3
NIOSH REL: (Tungsten, Insoluble) TWA 5 mg(W)/m3

Analytical Methods

For occupational chemical analysis use NIOSH: Tungsten, 7074; Elements, 7300.

Specification

The Tungsten is an organic compound with the formula W. The IUPAC name of this chemical is tungsten. With the CAS registry number 7440-33-7, it is also named as volframio. The product's categories are Inorganics; 74: W; TungstenNanomaterials; Materials Science; Nanomaterials; Nanoparticles: Metals and Metal AlloysMetal and Ceramic Science; Nanopowders and Nanoparticle Dispersions; Metal and Ceramic Science; Metals; Tungsten. Besides, it is a grey metal chunks or grey powder, which should be stored in a dry and well-ventilated place.

Preparation: this chemical can also be extracted by hydrogen reduction of WF6:
WF6 + 3 H2 → W + 6 HF  
or pyrolytic decomposition:
WF6 → W + 3 F2 (ΔHr = +)

Uses of Tungsten: it is of great importance to the metal-working, mining, and petroleum industries. Calcium and magnesium tungstates are widely used in fluorescent lighting; other salts of tungsten are used in the chemical and tanning industries. Tungsten disulfide is a dry, high-temperature lubricant, stable to 500 °C. Tungsten bronzes and other tungsten compounds are used in paints. Due to its conductive properties, as well as its relative chemical inertia, tungsten is also used in electrodes, and in the emitter tips in electron-beam instruments that use field emission guns, such as electron microscopes. In electronics, tungsten is used as an interconnect material in integrated circuits, between the silicon dioxide dielectric material and the transistors. It is used in metallic films, which replace the wiring used in conventional electronics with a coat of tungsten (or molybdenum) on silicon.
The electronic structure of tungsten makes it one of the main sources for X-ray targets, and also for shielding from high-energy radiations (such as in the radiopharmaceutical industry for shielding radioactive samples of FDG). Tungsten powder is used as a filler material in plastic composites, which are used as a nontoxic substitute for lead in bullets, shot, and radiation shields. Since this element's thermal expansion is similar to borosilicate glass, it is used for making glass-to-metal seals.

When you are using this chemical, please be cautious about it as the following:
It is highly flammable and danger of serious damage to health by prolonged exposure through inhalation. If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Besides, this chemical is irritating to eyes and skin and toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. It is possible risk of impaired fertility and vapours may cause drowsiness and dizziness. When you are using it, wear suitable suitable protective clothing and gloves and avoid release to the environment. Refer to special instructions/safety data sheet.

You can still convert the following datas into molecular structure:
(1)SMILES: [W]
(2)InChI: InChI=1/W
(3)InChIKey: WFKWXMTUELFFGS-UHFFFAOYAH
(4)Std. InChI: InChI=1S/W
(5)Std. InChIKey: WFKWXMTUELFFGS-UHFFFAOYSA-N

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 intraperitoneal 5gm/kg (5000mg/kg) VASCULAR: REGIONAL OR GENERAL ARTERIOLAR OR VENOUS DILATION

LIVER: OTHER CHANGES

BLOOD: OTHER CHANGES
Industrial Medicine. Vol. 15, Pg. 482, 1946.