ChemicalBook > CAS DataBase List > Pyrocatechol Violet

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
More
Less

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)
More
Less

Safety

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

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.

More
Less

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
More
Less

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

More
Less

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
Matrix Fine Chemicals GmbH
Tel
--
Fax
--
Email
nfo@matrix-fine-chemicals.com
Country
Switzerland
ProdList
6968
Advantage
58
SIGMA-RBI
Tel
--
Fax
--
Country
Switzerland
ProdList
6896
Advantage
91
More
Less

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

115-41-3, Pyrocatechol VioletRelated Search:

Catechol 4-Fluorocatechol Dibutyl phthalate 4-tert-Butylcatechol CATECHOLBORANE 1,2-Dimethoxybenzene Phthalic acid o-Phthalaldehyde Phthalic anhydride 2-Ethylbenzenethiol PYROGALLOL RED ISOPROPYL METHANESULFONATE Methyl benzenesulfonate Bromopyrogallol Red 4,4'-DIHYDROXYDIPHENYLMETHANE 2-MERCAPTOBENZYL ALCOHOL 4-Isopropylphenol 2-PHENYL-2-PROPANOL Catechol Violet

  • 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
  • Catechol violet, Pyrocatecholsulfonphthalein
  • Pyrocatechol Violet (0.1% in Water)
  • 3,3-Bis(3,4-dihydroxyphenyl)-3H-2,1-benzoxathiole 1,1-dioxide
  • Pyrocatechol Violet,pure,indicator grade
  • Pyrocatechol Violet≥ 98% (Assay)
  • A,A-BIS(3,4-DIHYDROXYPHENYL)-A-HYDROXY-O-TOLUENESULFONIC ACID G-SULFONE
  • PYROCATECHOLSULFONEPHTHALEIN
  • PYROCATECHOLSULFONPHTHALEIN
  • PYROCATECHOL SULPHONPHTHALEIN
  • PYROCATECHOL VIOLET
  • Pyrocatechol Violet, indicator grade, pure 5GR
  • 3,3-bis(3,4-dihydroxyphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide
  • Catechol Violet, Pyrocatecholsulphonphthalein
  • Catechol Purple Indicator Solution
  • Catechol vloiet
  • 1,2-Benzenediol,4,4’-(3H-2,1-benzoxathiol-3-ylidene)bis-,S,S-dioxide
  • 3’,3’,4’-Trihydroxyfuchsone-2’-SulfonicAcidPV
  • PyrocatechinSulfonphthaleinViolet
  • CATECHOLSULFONAPHTHALEIN
  • CATECHOL VIOLET
  • 3,3',4'-TRIHYDROXYFUCHSONE-2''-SULFONIC ACID
  • Pyrocatechol violet pH indicator solution
  • PyrocatecholViole
  • Catechol Violet Indicator (4.0-7.0)
  • Pyrocatechol violet (6CI)
  • suitable for indicator
  • Catechol Violet, Catechol Violet
  • Catechol Violet AR
  • 115-41-3
  • C19H14O7S
  • IR/UV/ VIS
  • Spectroscopy Reagents
  • Analytical Reagents
  • Analytical Chromatography Product Catalog
  • bulk reagents