Welcome to LookChem.com Sign In|Join Free
  • or
Home > Pharmaceutical > 7783 > 

7783-08-6

Basic Information
CAS No.: 7783-08-6
Name: Selenic(VI) acid
Article Data: 138
Molecular Structure:
Molecular Structure of 7783-08-6 (Selenic(VI) acid)
Formula: H2O4 Se
Molecular Weight: 144.973
Synonyms: 7783-08-6
EINECS: 231-979-4
Density: 1.407g/mLat 25°C
Melting Point: 50 C
Boiling Point: 260 C
Flash Point: >230°F
Appearance: colourless or white crystals
Hazard Symbols:
Risk Codes: R23/24/25;R34   
Safety: Selenium compounds are poisons. A corrosive irritant to skin, eyes, and mucous membranes. When heated to decomposition it emits toxic fumes of Se. See also SELENIUM COMPOUNDS.
Transport Information: UN 3264
PSA: 74.60000
LogP: -0.97200
Synthetic route

barium selenate

7664-93-9

sulfuric acid

7783-08-6

selenic acid

Conditions
ConditionsYield
In water byproducts: BaSO4; heating of BaSeO4, H2SO4 and H2O in a crucible for about 2.5 h;;85%
In water byproducts: BaSO4; heating;;
In water

O12Se4, S4-modification

A

Se3O7

B

2NO(1+)*Se3O10(2-)=(NO)2Se3O10

C

7783-08-6

selenic acid

Conditions
ConditionsYield
In nitromethane dry air atm.; -20-30°C, 2 d - 6 weeks;A 51%
B n/a
C n/a
13768-86-0

selenium trioxide

7783-08-6

selenic acid

Conditions
ConditionsYield
In water
In water

silver selenite

7783-08-6

selenic acid

Conditions
ConditionsYield
With bromine In water oxidation of Ag2SeO3 with Br2;;>99
With bromine In water byproducts: AgBr; addn. of Br2 to a suspension of Ag2SeO3 in H2O under vigorous stirring; passing of a stream of air through the soln. after 2 h;; filtration; passing of air through the filtrate; addn. of HBr; addn. of aq. Br2; filtration; successive concn. of the filtrate in air and in vac.;;
With bromine In water byproducts: AgBr;

silver selenite

7783-08-6

selenic acid

Conditions
ConditionsYield
With bromine In water byproducts: AgBr; treatment of a suspension of Ag2SeO3 in H2O with Br2;;
With Br2 In water byproducts: AgBr; treatment of a suspension of Ag2SeO3 in H2O with Br2;;
7782-49-2

selenium

A

7783-00-8

selenious acid

B

7783-08-6

selenic acid

Conditions
ConditionsYield
In waterA 0%
B n/a
In waterA 0%
B n/a
7782-49-2

selenium

A

7783-00-8

selenious acid

B

7783-08-6

selenic acid

Conditions
ConditionsYield
In water reaction of ozone and Se in presence of H2O;;A 0%
B n/a
In water

clausthalite

7783-06-4

hydrogen sulfide

potassium nitrate

7783-08-6

selenic acid

Conditions
ConditionsYield
With lead(II) nitrate In neat (no solvent) byproducts: PbS; melting of clausthalite and KNO3; dissolving of the melt in HNO3; boiling; addn. of Pb(NO3)2; decompn. of the formed PbSeO4 with H2S;;
With Pb(NO3)2 In neat (no solvent) byproducts: PbS; melting of clausthalite and KNO3; dissolving of the melt in HNO3; boiling; addn. of Pb(NO3)2; decompn. of the formed PbSeO4 with H2S;;
With Pb(NO3)2
7782-49-2

selenium

7782-50-5

chlorine

A

7783-00-8

selenious acid

B

7783-08-6

selenic acid

Conditions
ConditionsYield
In water
In water

copper(II) selenate

7783-08-6

selenic acid

Conditions
ConditionsYield
In not given Electrolysis;
  • Display:default sort

    New supplier

  • Selenic acid

  • Casno:

    7783-08-6

    Selenic acid

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 3.0-3.0

    As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch

    Dayang Chem (Hangzhou) Co.,Ltd. dedicated to the development, production and marketing of chemicals which is specialized in Organic compounds; Active Pharmaceutical Ingredi

  •  Dayang Chem (Hangzhou) Co.,Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-571-88938639

    Address:9/F, Unit 2 Changdi Torch Building, 259# WenSan Road, Xihu District, Hangzhou City 310012, P.R.China

       Inquiry Now

  • Selenic acid

  • Casno:

    7783-08-6

    MSDS/COA Download

    Selenic acid

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 100.0-100.0

    Overview Quick Details CAS No.: 7783-08-6 Other Names: Selenic acid

    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

  • Selenic acid

  • Casno:

    7783-08-6

    Selenic acid

    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

  • Selenic acid

  • Casno:

    7783-08-6

    Selenic acid

    Min.Order: 0 Metric Ton

    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

  • Selenic acid

  • Casno:

    7783-08-6

    Selenic acid

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    1.Our services:A.Supply sampleB.The packing also can be according the customers` requirmentC.Any inquiries will be replied within 24 hoursD.we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate.

    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

  • factory directly supply CAS  7783-08-6 with competitive price

  • Casno:

    7783-08-6

    factory directly supply CAS 7783-08-6 with competitive price

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 112.0-112.0

    Product Description Description & Specification Category Pharmaceutical Raw Materials, Fine Chemicals, Bulk drug Standard Medical standard

    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

  • Selenic acid CAS NO 7783-08-6

  • Casno:

    7783-08-6

    Selenic acid CAS NO 7783-08-6

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Selenic acid CAS NO 7783-08-6 Application:Selenic acid CAS NO 7783-08-6

    Hubei Xinrunde Chemical Co., Ltd. dedicated to the development, production and marketing of chemicals which is specialized in Organic compounds; Active Pharmaceutical Ingredient(s)

  •  Hubei Langyou International Trading Co., Ltd

    China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:+8618874586545

    Address:No.43, Xinandu Industrial Park, East and West Lake District, Wuhan, Hubei, China

       Inquiry Now

  • 7783-08-6

  • Casno:

    7783-08-6

    7783-08-6

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Supply top quality products with a reasonable price Application:api

    Changchun Artel Import and Export Trade Co., Ltd. is located in Changchun City, Jilin Province. It is a high-tech modern private enterprise specializing in the research, developme

  •  Changchun Artel lmport and Export trade company

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-0431-80543058

    Address:Dianshi Plazza,Chaoyang District

       Inquiry Now

  • Selenic acid solution, 40 wt. % in water

  • Casno:

    7783-08-6

    Selenic acid solution, 40 wt. % in water

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    in stock Application:7783-08-6

    BeanTown Chemical, with a product range of over 7000 products with about 6000 in stock and ready to ship, is a manufacturer and supplier of research chemicals, metals and materials

  •  Beantown Chemical

    United States  |  Contact Details

    Business Type:Trading Company

    Tel:844-891-6306

    Address:9-11 Sagamore Park Road Hudson NH 03051

       Inquiry Now

  • Selenic acid CAS NO 7783-08-6

  • Casno:

    7783-08-6

    MSDS/COA Download

    Selenic acid CAS NO 7783-08-6

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0

    Price, Service, Company and Transport Advantage: 1. Best service, high quality and reasonable price 2. It's customers' right to choose the package (EMS, DHL, FedEx, UPS); 3. It's customers' right to choose the packing w

    Jilin Tiandicheng Biotech Co., Ltd. mainly supply and export products including: pharmaceutical raw materials,API,Chemical reagents, Food additives, pharmaceutical and pesticide in

  • Jilin Tiandicheng Biotech Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-18103315327

    Address:jinlin

       Inquiry Now

  • Selenic acid

  • Casno:

    7783-08-6

    Selenic acid

    Min.Order: 1 Gram

    FOB Price:  USD $ 1.0-1.0

    The company is a high-tech enterprise providing comprehensive customer service for pharmaceutical companies at home and abroad in accordance with international standards. Our business includes research, development, process optimization and product

    Prime Molecular Co., Ltd. is an advanced chemical intermediates manufacture with ?two R&D centers and two production sites in China, all well-equipped with dedicated and profession

  • PRIME MOLECULAR CO.,LIMITED

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:0852-0755-61104662

    Address:Hong Kong

       Inquiry Now

  • Selenic acid solution

  • Casno:

    7783-08-6

    Selenic acid solution

    Min.Order: 10 Gram

    FOB Price:  USD $ 0.9-1.2

    Hebei ruishun trade co.,ltd, registered capital one million,have a production of pharmaceutical raw materials, pharmaceutical raw materials factory reagent r&d center,seek development by credit reputation.our products have a large price advanta

    Hebei Ruishun Trade Co.,Ltd registered capital one million, we have a production of pharmaceutical raw materials, pharmaceutical raw materials factory reagent r&d center, we do

  • Hebei Ruishun Trade Co.,Ltd

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-311-68037669

    Address:WanDa commerce building ,yuhua district

       Inquiry Now

  • Selenic acid, 40% aq.

  • Casno:

    7783-08-6

    Selenic acid, 40% aq.

    Min.Order: 1 Gram

    FOB Price:  USD $ 0.0-0.0

    At Share Chemical Company, we scrupulously abide by our policy of “Excellent Quality at a Reasonable Price”. We strive to satisfy all of our customers by providing the finest quality products supported by the finest in customer servi

    Share Chemical Co., Ltd. is an innovative chemical producer engaged in the production of organic specialty chemicals, pharmaceuticals, and fine chemicals of high purity for product

  • Hangzhou Share Chemical Co., Ltd

    China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:+86-57187093700

    Address:Hang Xing Road

       Inquiry Now

  • Selenic acid

  • Casno:

    7783-08-6

    Selenic acid

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    United Scientific Company Located in Shanghai of China , is a competitive player in the global specialty and fine chemical market. Fenghua has both the expertise and flexibility to produce a wide range of chemicals. Focusing on developing the innovat

    United Scientific Company (USC) Located in Shanghai of China , is a competitive player in the global specialty and fine chemical market. USC has both the expertise and flexibility

  • Shanghai united Scientific Co.,Ltd.

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-21-53535353

    Address:28F No.900 huaihai Road Shanghai China

       Inquiry Now

  • Selenic acid, 40% solution

  • Casno:

    7783-08-6

    Selenic acid, 40% solution

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    1.High Quality Specialty Chemicals2.Expertise and Experience in Manufacturing High Purity, High Quality Chemicals3.Long Term Focus in Inorganics, Organometallics and Metals4.ISO 9001 CertifiedAppearance:colorless liq.

    High Quality Specialty Chemicals Strem Chemicals, Inc. established in 1964, is a privately–held company that manufactures and markets specialty chemicals of high purity. Its client

  • Strem Chemicals, Inc.

    United States  |  Contact Details

    Business Type:Other

    Tel:1-978-4991600

    Address:7 Mulliken Way, Newburyport, MA 01950-4098 USA

       Inquiry Now

  • Selenic acid CAS NO 7783-08-6

  • Casno:

    7783-08-6

    Selenic acid CAS NO 7783-08-6

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Selenic acid CAS NO 7783-08-6 Storage:Store in dry and cool condition Package:25kg or according to cutomer's demand Application:Chemical research/Pharmaceutical intermediates Transportation:By Sea,by Air,By courier like DHL or Fedx. Port:Shanghai/She

    Nanjing Raymon Biotech Co., Ltd. is specialized in developing and marketing middle & high level pharmaceutical intermediates. We are supplying different categories of high-quality

  • Nanjing Raymon Biotech Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:86-025-52181296

    Address:Block B, No. 918, Shuanglong Avenue

       Inquiry Now

  • Selenic acid CAS NO 7783-08-6

  • Casno:

    7783-08-6

    Selenic acid CAS NO 7783-08-6

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Selenic acid CAS NO 7783-08-6 Application:Selenic acid CAS NO 7783-08-6

    Hangzhou Fenjunchem Co.,Ltd dedicated to the development, production and marketing of chemicals which is specialized in Organic compounds; Active Pharmaceutical Ingredient(s); Nutr

  • Hangzhou Fenjun Chemical Co Ltd.

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-0571-56263321

    Address:hangzhou

       Inquiry Now

  • selenic acid

  • Casno:

    7783-08-6

    selenic acid

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    CFTC?PharmaChem?is?a?service?based?company?in?China,?a?pharmachem?division?of?Changzhou?Foreign?Trade?Corp.,supplying?raw?materials,?intermediates,?APIs?and?fine?chemicals?for?the?pharmaceutical?and?specialty?chemical?industries?worldwide. Applicatio

    CFTC PharmaChem is a service based company in China, a pharmachem division of Changzhou Foreign Trade Corp.,supplying raw materials, intermediates, APIs and fine chemicals for the

  • Changzhou Foreign Trade Corp

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-519-86623222

    Address:29F/D, 99 Yanling West Road, Changzhou, Jiangsu, China

       Inquiry Now

  • Total:18 Page 1 of 1 1
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 7783-08-6

Chemistry

Selenic acid is a stronger oxidiser than sulfuric acid, capable of liberating chlorine from chloride ions, being reduced to selenous acid in the process:

H2SeO4 + 2 H+ + 2 ClH2SeO3 + H2O + Cl2
It decomposes above 200°C, liberating oxygen gas and being reduced to selenous acid:
         2 H2SeO4 → 2 H2SeO3 + O2
IUPAC Name: Selenic acid
The MF of Selenic acid (CAS NO.7783-08-6) is H2O4Se.

                             
The MW of Selenic acid (CAS NO.7783-08-6) is 144.97.
Synonyms of Selenic acid (CAS NO.7783-08-6): Selenicacid, 40% solution
Product Categories: Acids;Electronic Chemicals;Micro/Nanoelectronics
Stability: Stable, but decomposes on heating. Non-flammable. Incompatible with metals, combustible materials. Hygroscopic
Apperance: colourless or white crystals
Melting Point: 58 °C
Boiling Point: 260 °C
Density: 1.407 g/mL at 25 °C
Refractive index: n20/D 1.5174
Flash Point: >230 °C
Merck: 14,8429 
EINECS: 231-979-4

Uses

 Selenic acid (CAS NO.7783-08-6) is used as analytical reagent,also for the preparation of selenium salts.

Production

Due to the instability of selenium trioxide, it is impractical to synthesize selenic acid by dissolving selenium trioxide in water, unlike sulfuric acid, which can be synthesized by dissolving sulfur trioxide in water. Instead, it must be prepared by oxidising selenium compounds in lower oxidation states.
One method of preparing selenic acid is by the oxidation of selenium dioxide with hydrogen peroxide:

SeO2 + H2O2H2SeO4
To obtain the anhydrous acid as a crystalline solid, the resulting solution is evaporated at temperatures below 140 °C (413 K; 284 °F) in a vacuum.
Selenic acid may also be prepared by the oxidation of selenous acid (H2SeO3) with halogens, such as chlorine or bromine, or with potassium permanganate. However, using chlorine or bromine as the oxidising agent also produces hydrochloric or hydrobromic acid as a side-product, which needs to be removed from the solution since they can reduce the selenic acid to selenous acid.
Another method of preparing selenic acid is by the oxidation of elemental selenium in water suspension by chlorine:
         Se + 4 H2O + 3 Cl2H2SeO4 + 6 HCl

 

Consensus Reports

Selenium and its compounds are on the Community Right-To-Know List. EPA Genetic Toxicology Program. Reported in EPA TSCA Inventory.

Safety Profile

Selenium compounds are poisons. A corrosive irritant to skin, eyes, and mucous membranes. When heated to decomposition it emits toxic fumes of Se. See also SELENIUM COMPOUNDS.Safety information of Selenic acid (CAS NO.7783-08-6):
Hazard Codes  ToxicT,DangerousN
Risk Statements 
23/24/25 Toxic by inhalation, in contact with skin and if swallowed
34 Causes burns
50/53 Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
33 Danger of cumulative effects
Safety Statements 
23 Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer)
26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36/37/39 Wear suitable protective clothing, gloves and eye/face protection
45 In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
61 Avoid release to the environment. Refer to special instructions safety data sheet
60 This material and/or its container must be disposed of as hazardous waste
28 After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer)
20/21 When using, do not eat, drink or smoke
RIDADR  UN 3264 8/PG 1
RTECS  VS6575000
HazardClass  8
PackingGroup  I

Standards and Recommendations

OSHA PEL: TWA 0.2 mg(Se)/m3
ACGIH TLV: TWA 0.2 mg(Se)/m3
DFG MAK: 0.1 mg(Se)/m3
DOT Classification:  8; Label: Corrosive

Specification

 Selenic acid is the chemical compound with the formula H2SeO4. It is an oxoacid of selenium, and its structure is more accurately described as (HO)2SeO2.
 As predicted by VSEPR theory, the selenium center is tetrahedral, with a Se–O bond length of 161 pm. In the solid state, it crystallizes in an orthorhombic structure.