2379-75-1

Basic information

• Product Name: Vat Voilet 3
• Synonyms: Vat Voilet 3;5-chloro-2-(5-chloro-4,7-dimethyl-3-oxobenzo[b]thien-2(3h)-ylidene)-4,7-dimethylbenzo[b]thiophene-3(2h)-one;c.i. pigment violet 38;C.I. 73395;5,5-dichloro-4,4,7,7-tetramethyl-[2,2-bibenzo[b]thiophene]-3,3-dione;C.I. Vat Violet 3;Pigment Violet 38 (C.I.);Vat Violet 3 (C.I.)
• CAS NO: 2379-75-1
• Molecular Formula: C₂₀H₁₄Cl₂O₂S₂
• Molecular Weight: 421.35996
• EINECS: 219-164-1
• Product Categories: Organics
• Mol File: 2379-75-1.mol
• Article Data: 0

Chemical Properties

• Boiling Point: 551.8 °C at 760 mmHg
• Flash Point: 287.5 °C
• Appearance: /
• Density: 1.499
• Vapor Pressure: 3.19E-12mmHg at 25°C
• Refractive Index: 1.719
• Storage Temp.: 2-8°C
• CAS DataBase Reference: Vat Voilet 3(CAS DataBase Reference)
• NIST Chemistry Reference: Vat Voilet 3(2379-75-1)
• EPA Substance Registry System: Vat Voilet 3(2379-75-1)

Safety Data

• Hazardous Substances Data: 2379-75-1(Hazardous Substances Data)

Usage

Preparation

2,5-Dimethyl-4-chlorophenylmercaptoacetic acid with Chlorosulfonic acid cyclization, oxidation. This intermediate is chlorinated using the sulfonyl chloride route xylene (BIOS) derived.

Properties and Applications

brilliant red light purple. Red purple powder. Insoluble in water, ethanol and general organic solvent. In concentrated sulfuric acid for SAP green, dilution after pale red light purple. Alkaline reduction leuco for yellow; Acid reduction leuco colorless. This product is light embrittlement phenomenon.?Mainly used in cotton yarn dyeing indigo with bromine, etc. Tile Black Vat Brown RRD use. Rubbing fastness, but also for direct printing of cotton fabrics, resist printing and discharge printing. Standard Ironing Fastness Chlorine bleach Light Fastness Mercerized Oxygen bleach Soaping Fading Stain ISO 4 5 5 3 4 4-5 5 AATCC 5 5 5 3-4 4

Standard

Ironing Fastness

Fading

Stain

ISO

4

AATCC

5

InChI:InChI=1/C20H14Cl2O2S2/c1-7-5-11(21)9(3)13-15(23)19(25-17(7)13)20-16(24)14-10(4)12(22)6-8(2)18(14)26-20/h5-6H,1-4H3/b20-19-