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Pyrocatechol Violet

Name: Pyrocatechol Violet
Brand: SIGMA

Powder

Synonym(s):

Catechol violet, Pyrocatecholsulfonphthalein

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About This Item

Empirical Formula (Hill Notation):

C₁₉H₁₄O₇S

CAS Number:

115-41-3

Molecular Weight:

386.38

NACRES:

NA.47

PubChem Substance ID:

24898883

UNSPSC Code:

12171500

EC Number:

204-088-3

MDL number:

MFCD00005868

Beilstein/REAXYS Number:

353938

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Properties

Product Name

Pyrocatechol Violet, suitable for indicator

form

powder

Quality Segment

200

technique(s)

titration: suitable

mp

185 °C (dec.) (lit.)

solubility

water: 1 mg/mL

suitability

suitable for indicator

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Oc1ccc(cc1O)C(=C2\C=CC(=O)C(O)=C2)\c3ccccc3S(O)(=O)=O

InChI

1S/C19H14O7S/c20-14-7-5-11(9-16(14)22)19(12-6-8-15(21)17(23)10-12)13-3-1-2-4-18(13)27(24,25)26/h1-10,20,22-23H,(H,24,25,26)/b19-12+

InChI key

HGPSVOAVAYJEIJ-XDHOZWIPSA-N

Description

General description

Pyrocatechol Violet (PV) is a sulfone phthalein dye. It chelates metal ions. The metal-PV complex is bluish-violet in color.

Application

Complexometric indicator

Pyrocatechol Violet has been used in the formation of dye-metal complexes. It has also been used to determine Cu²⁺ chelating activity.

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This Item	C9510	50550	430749
Sigma-Aldrich P7884 Pyrocatechol Violet	Sigma-Aldrich C9510 Pyrocatechol	Supelco 50550 Pyrocatechol	Sigma-Aldrich 430749 Pyrocatechol
description suitable for indicator	description ≥99%	description certified reference material, TraceCERT^®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland	description purified by sublimation, ≥99.5%
suitability suitable for indicator	suitability -	suitability -	suitability -
technique(s) titration: suitable	technique(s) -	technique(s) gas chromatography (GC): suitable	technique(s) -
solubility water: 1 mg/mL	solubility water: 50 mg/mL, clear, colorless to faintly yellow	solubility -	solubility -
form powder	form powder	form -	form -
application(s) diagnostic assay manufacturing hematology histology	application(s) -	application(s) cleaning products cosmetics environmental food and beverages personal care	application(s) -
Quality Level 200	Quality Level 200	Quality Level 300	Quality Level 100

Pictograms

GHS07

Signal Word

Warning

Hazard Codes

H315,H319

Precautionary Statements

P264 - P280 - P302 + P352 - P305 + P351 + P338 - P332 + P313 - P337 + P313

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Storage Class

11 - Combustible Solids

WGK

WGK 3

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

PPE (personal protective equipment)

Eyeshields, Gloves, type N95 (US)

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