Catechol Violet CAS 115-41-3 Pyrocatecholsulfonephthalein Pyrocatechol Violet

Model: C19H14O7S
Place of Origin: Shandong,China (Mainland)
Brand Name: MOSINTER
CAS No.: 115-41-3
Molecular formula: C19H14O7S
Molecular weight: 386.3753
Solubility: H2O: 1 mg/mL, clear, red
Stability: Stable. Incompatible with strong oxidizing agents.
Density: 1.62g/cm3
Melting point: 185℃
Alias: Pyrocatecholsulfonphthalein


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Product Description

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Payment Terms:T/TProduction Capacity:5 Ton/Year
Min. Order:1 KilogramPacking:According to the...
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Catechol Violet (CAS: 115-41-3)





Red-brown   crystals

Water solubility test

Past   test

Sensitivity tests for bismuth

Past   test

Sensitivity tests for pH

Past   test

Residue on ignition (sulfate) %≤


Melting point ℃


The description of the characters

Red brown crystalline powder,With metallic luster;oluble in water and ethanol,Slightly soluble in anhydrous ethanol,Not soluble in nonpolar solvents(Such as ether, benzene, xylene),Its aqueous solution is yellow,When the acidity increased from yellow to red,PH above 6 solution into a purple,and PH above 9 into red and purple.


1.complexometric indicator;Titration bismuth, cadmium, cobalt, copper, iron, gallium, indium, magnesium, lead, zinc, manganese, nickel, thorium,Used for bismuth, boron, chromium (III), copper, niobium, antimony, tin, zirconium, spectrophotometric determination of thorium and Paper chromatography of spraying agent.

Storage transport

Sealed storage

Category: Indicator Tracer Agent

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