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Basic Information
CAS No.: 2303-01-7
Name: Cresol Purple
Article Data: 5
Molecular Structure:
Molecular Structure of 2303-01-7 (Cresol Purple)
Formula: C21H18O5S
Molecular Weight: 382.437
Synonyms: Phenol,4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[3-methyl-, S,S-dioxide;m-Cresol purple(6CI);m-Cresol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)di-, S,S-dioxide (8CI);o-Toluenesulfonic acid, a-hydroxy-a,a-bis(4-hydroxy-o-tolyl)-, g-sultone (7CI);Cresol purple;Metacresol Purple;NSC9607;m-Cresolsulfonephthalein;
EINECS: 218-960-6
Density: 1.37 g/cm3
Melting Point: >250°C
Boiling Point: 577.5 °C at 760 mmHg
Flash Point: 303 °C
Solubility: Soluble in water and sodium hydroxide solution. Slightly soluble in alcohol.
Appearance: green crystalline powder
Safety: 24/25
PSA: 92.21000
LogP: 4.80620
Synthetic route
108-39-4

3-methyl-phenol

81-07-2

saccharin

2303-01-7

m-cresol purple

Conditions
ConditionsYield
With sulfuric acid at 110℃; for 4h; Neat (no solvent);34%
81-08-3

2-sulfobenzoic acid cyclic anhydride

108-39-4

3-methyl-phenol

2303-01-7

m-cresol purple

Conditions
ConditionsYield
for 0.00277778h; Microwave irradiation;15%
at 106℃;
With zinc(II) chloride at 105 - 110℃;
at 106℃;
34684-21-4

2-chlorosulfonylbenzoyl chloride

108-39-4

3-methyl-phenol

2303-01-7

m-cresol purple

Conditions
ConditionsYield
With zinc(II) chloride at 105 - 110℃;
2303-01-7

m-cresol purple

sodium hydroxide

sodium hydroxide

578-39-2

4-hydroxy-2-methylbenzoic acid

Conditions
ConditionsYield
beim Schmelzen;
Downstream Products
578-39-2
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  • Cresol Purple

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    2303-01-7

    Cresol Purple

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    J&H CHEM is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other Value-added customer services, for diversified range products of chemicals

    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

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  • Phenol,4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[3-methyl-

  • Casno:

    2303-01-7

    Phenol,4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[3-methyl-

    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

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  • M-Cresol Purple, indicator

  • Casno:

    2303-01-7

    M-Cresol Purple, indicator

    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

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  • Cresol Purple

  • Casno:

    2303-01-7

    Cresol Purple

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    1.High purity, like 99%, 99.9%, 99.95%, 99.99%, 99.999%2.Quality control, test sample before shipping and keep sample for 3 years after shipping;3. Prompt shipment with professional documents;4. Packing as your request, with photo before shipment;5.

    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

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  • Cresol PurpleCAS NO.: 2303-01-7

  • Casno:

    2303-01-7

    Cresol PurpleCAS NO.: 2303-01-7

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    QualityAdvanced technologySupper qualityEffective & safety packageServiceProfessional and timely afte-sale service(replied within 12h)Appearance:White crystal Storage:cool,dry, ventilated Package:1kg/bag, 10kg/drum, 25kg/drum(on requests) Application

    Luhan Pharmachem Co., Ltd. owns strong elite professional quality sales force, has the customer base from the US, Europe, Japan, Southeast Asia, Korea, Hong Kong, Taiwan and other

  •  Luhan Pharmachem Co., Lt

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-871-65110906

    Address:Room702, Building 2, 365 Dianchi Road, Kunming, Yunnan Province, P.R. China

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  • Cresol Purple

  • Casno:

    2303-01-7

    Cresol Purple

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    good quality, competitive price, thoughtful after sale serviceAppearance:White to Off-White Solid Storage:Keep it in dry,shady and cool place Package:as your requirement Application:Pharma;Industry;Agricultural;chemical reaserch Transportation:by Sea

    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 Chem-medical 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)

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Specification

The Cresol Purple, with the cas registry number 2303-01-7, has the systematic name of 2-[(Z)-(4-hydroxy-2-methylphenyl)(2-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonic acid. It is a kind of green stable crystalline powder and incompatible with strong oxidizing agents. Its product categories are various, including Organics; Analytical Chemistry; Indicator (pH); pH Indicators. When you are dealing with this chemical, be careful not to contact with eyes and skin.

The characteristics of this chemical are as followings: (1)ACD/LogP: 2.99; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -0.51; (4)ACD/LogD (pH 7.4): -0.51; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 5; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 4; (12)Polar Surface Area: 78.05 Å2; (13)Index of Refraction: 1.652; (14)Molar Refractivity: 102.12 cm3; (15)Molar Volume: 279.2 cm3; (16)Polarizability: 40.48×10-24cm3; (17)Surface Tension: 58.9 dyne/cm; (18)Density: 1.369 g/cm3.

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: O=C/3/C=C\C(=C(/c1ccc(O)cc1C)c2ccccc2S(=O)(=O)O)\C(=C\3)C
(2)InChI: InChI=1/C21H18O5S/c1-13-11-15(22)7-9-17(13)21(18-10-8-16(23)12-14(18)2)19-5-3-4-6-20(19)27(24,25)26/h3-12,22H,1-2H3,(H,24,25,26)/b21-18-
(3)InChIKey: APQRURLENAYZRH-UZYVYHOEBT