Pyrocatechol Violet

Product Name: Pyrocatechol Violet
CAS No.: 115-41-3
Chemical Name: Pyrocatechol Violet
Synonyms: Catechol vloiet;CATECHOL VIOLET;PyrocatecholViole;Catechol Violet AR;PYROCATECHOL VIOLET;PyrocatecholVioletGr;suitable for indicator;Catecholsulfonphthalein;CATECHOLSULFONAPHTHALEIN;Pyrocatechol violet (6CI)
CBNumber: CB5423604
Molecular Formula: C19H14O7S
Formula Weight: 386.38
MOL File: 115-41-3.mol

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Pyrocatechol Violet Property

Melting point:: 185 °C (dec.)(lit.)
Boiling point:: 659.5±55.0 °C(Predicted)
Density: 1.632±0.06 g/cm3(Predicted)
storage temp.: -20°C Freezer, Under inert atmosphere
solubility: H₂O: 1 mg/mL, clear, red
pka: 7.21±0.10(Predicted)
form: Metallic or Crystalline Powder
color: Dark red-brown
PH Range: 6.0(YELLOW)-7.0(PURPLE)-9.0(PURPLISH RED)
Water Solubility: Soluble in water, ethylene glycol, monomethyl ether and ethanol.
BRN: 353938
Stability:: Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference: 115-41-3(CAS DataBase Reference)
EPA Substance Registry System: 1,2-Benzenediol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis- (115-41-3)

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Safety

Risk Statements: 36/37/38
Safety Statements: 24/25
WGK Germany: 3
TSCA: Yes
HS Code: 32041900

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: P7884
Product name: Pyrocatechol Violet
Purity: suitable for indicator
Packaging: 5g
Price: $86.3
Updated: 2024/03/01

Sigma-Aldrich

Product number: P7884
Product name: Pyrocatechol Violet
Purity: suitable for indicator
Packaging: 10g
Price: $152
Updated: 2024/03/01

TCI Chemical

Product number: P0568
Product name: Pyrocatechol Violet
Packaging: 1g
Price: $24
Updated: 2024/03/01

TCI Chemical

Product number: P0568
Product name: Pyrocatechol Violet
Packaging: 5g
Price: $59
Updated: 2024/03/01

Alfa Aesar

Product number: B23513
Product name: Catechol Violet
Packaging: 5g
Price: $60
Updated: 2024/03/01

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Pyrocatechol Violet Chemical Properties,Usage,Production

Chemical Properties

greenish yellow powder

Uses

A complexometric indicator.

Uses

Pyrocatechol Violet is a complexometric indicator dye. This phthalein dye chelates metals to form blue to blue-violet complexs. It is also a pH indicator with a transition interval from 0 - 8 (red to violet). It is known to be unstable when alkaline. The stability is improved at a neutral pH. When the pH is between 2-7 the color may be yellow. Dyes and metabolites.

Purification Methods

It is recrystallised from glacial acetic acid. It is very hygroscopic and is an indicator standard for metal complex titrations. [Mustafin et al. Zh Anal Khim 22 1808 1967, Beilstein 19/3 V 703.]

Pyrocatechol Violet Preparation Products And Raw materials

Raw materials

Saccharin Catechol

Preparation Products

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Pyrocatechol Violet Suppliers

Americas 1 Austria 1 Belgium 1 China 170 Czech Republic 1 Europe 4 Germany 2 India 23 Japan 4 Poland 2 South Korea 1 Switzerland 2 United Kingdom 14 United States 32 Global 258

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View Lastest Price from Pyrocatechol Violet manufacturers

Career Henan Chemical Co

Product: Pyrocatechol Violet 115-41-3
Price: US $1.00/KG
Min. Order: 1G
Purity: 99%
Supply Ability: 100KG
Release date: 2018-08-13

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Pyrocatechol violet pH indicator solution

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suitable for indicator

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115-41-3

C19H14O7S

IR/UV/ VIS

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