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
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)
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.
N-Bromosuccinimide Price
- Product number
- P7884
- Product name
- Pyrocatechol Violet
- Purity
- suitable for indicator
- Packaging
- 5g
- Price
- $86.3
- Updated
- 2024/03/01
- Product number
- P7884
- Product name
- Pyrocatechol Violet
- Purity
- suitable for indicator
- Packaging
- 10g
- Price
- $152
- Updated
- 2024/03/01
- Product number
- P0568
- Product name
- Pyrocatechol Violet
- Packaging
- 1g
- Price
- $24
- Updated
- 2024/03/01
- Product number
- P0568
- Product name
- Pyrocatechol Violet
- Packaging
- 5g
- Price
- $59
- Updated
- 2024/03/01
- Product number
- B23513
- Product name
- Catechol Violet
- Packaging
- 5g
- Price
- $60
- Updated
- 2024/03/01
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.]
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View Lastest Price from Pyrocatechol Violet manufacturers
- Product
- Pyrocatechol Violet 115-41-3
- Price
- US $1.00/KG
- Min. Order
- 1G
- Purity
- 99%
- Supply Ability
- 100KG
- Release date
- 2018-08-13