P7884

Pyrocatechol Violet

Powder

• Synonym(s): Catechol violet, Pyrocatecholsulfonphthalein
• Empirical Formula (Hill Notation): C₁₉H₁₄O₇S
• CAS Number: 115-41-3
• Molecular Weight: 386.38
• Beilstein/REAXYS Number: 353938
• EC Number: 204-088-3
• MDL number: MFCD00005868
• UNSPSC Code: 12171500
• PubChem Substance ID: 24898883
• NACRES: NA.47

Properties

• product name: Pyrocatechol Violet, suitable for indicator
• form: powder
• 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.

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H315,H319
• pcodes: 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_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)