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Pyrocatechol Violet

Pyrocatechol Violet Suppliers list
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Products Intro: Product Name:Pyrocatechol Violet
CAS:115-41-3
Purity:99% Package:1KG;1USD
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Products Intro: Product Name:Pyrocatechol Vi olet
CAS:115-41-3
Package:2.5KG;500G
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Products Intro: Product Name:Pyrocatechol Violet
CAS:115-41-3
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Products Intro: Product Name:Pyrocatechol Violet
CAS:115-41-3
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Products Intro: Product Name:Pyrocatechol violet;Catechol violet
CAS:115-41-3
Purity:99% Package:25kg

Pyrocatechol Violet manufacturers

  • Pyrocatechol Violet
  • $1.00 / 1KG
  • 2019-07-06
  • CAS:115-41-3
  • Min. Order: 1G
  • Purity: 99%
  • Supply Ability: 100KG
Pyrocatechol Violet Basic information
Product Name:Pyrocatechol Violet
Synonyms:Pyrocatechimsulfonphthalein violed;PYROCATECHOL VIOLET, FOR COLORIMETRY;PYROCATECHOL VIOLET INDICATOR FOR METAL TITRATION;PYROCATECHOL VIOLET, INDICATOR GRADE;PyrocatecholVioletGr;Pyrocatechol Violet, indicator grade, pure;1,2-Benzenediol, 4,4-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis-;Catecholsulfonphthalein
CAS:115-41-3
MF:C19H14O7S
MW:386.38
EINECS:204-088-3
Product Categories:bulk reagents
Mol File:115-41-3.mol
Pyrocatechol Violet Structure
Pyrocatechol Violet Chemical Properties
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
pka7.21±0.10(Predicted)
form Metallic or Crystalline Powder
color Dark red-brown
PH Range6.0(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 Reference115-41-3(CAS DataBase Reference)
EPA Substance Registry System1,2-Benzenediol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis- (115-41-3)
Safety Information
Risk Statements 36/37/38
Safety Statements 24/25
WGK Germany 3
TSCA Yes
HS Code 32041900
MSDS Information
ProviderLanguage
Catecholsulfonphthalein English
SigmaAldrich English
ACROS English
ALFA English
Pyrocatechol Violet Usage And Synthesis
Chemical Propertiesgreenish yellow powder
UsesA complexometric indicator.
UsesPyrocatechol 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 MethodsIt 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 materialsPyrocatechol-->Saccharin
Tag:Pyrocatechol Violet(115-41-3) Related Product Information
1,2-Dimethoxybenzene Phthalic acid o-Phthalaldehyde Phthalic anhydride 4-Isopropylphenol 2-MERCAPTOBENZYL ALCOHOL Bromopyrogallol Red Methyl benzenesulfonate PYROCATECHOL VIOLET, SODIUM SALT PYROGALLOL RED ISOPROPYL METHANESULFONATE Methyl methanesulfonate 3-(2-HYDROXY-2-PROPYL)PHENOL 2-(1-Methylethyl)thiophenol 3-HYDROXYPHENYLMETHYLCARBINOL Isopropyl Benzenesulfonate 2-Ethylbenzenethiol 3-BENZYLPHENOL