6252-78-4

Basic information

• Product Name: sodium 2-[3-(4-sulfonato-o-tolyliminio)-6-o-toluidino-3H-xanthen-9-yl]benzoate
• Synonyms: Acid Violet 9 (C.I.);C.I. Acid Violet 9;sodium 2-[3-(4-sulfonato-o-tolyliminio)-6-o-toluidino-3H-xanthen-9-yl]benzoate;2-(2-oxo-2H-acenaphth-1-ylidene)benzo[b]thiophene-3(2H)-one;Vat Red 45;Vat red 45 (C.I. 73860);2-(1-Oxoacenaphthene-2-ylidene)benzo[b]thiophene-3(2H)-one;2-(2,3-Dihydro-3-oxobenzo[b]thiophene-2-ylidene)acenaphthene-1-one
• CAS NO: 6252-78-4
• Molecular Formula: C₂₀H₁₀O₂S
• Molecular Weight: 612.62687
• EINECS: 228-378-4
• Mol File: 6252-78-4.mol
• Article Data: 0

Chemical Properties

• Boiling Point: 507.2ºC at 760 mmHg
• Flash Point: 225.4ºC
• Appearance: /
• Density: 1.505g/cm3
• Vapor Pressure: 2.08E-10mmHg at 25°C
• Refractive Index: 1.827
• CAS DataBase Reference: sodium 2-[3-(4-sulfonato-o-tolyliminio)-6-o-toluidino-3H-xanthen-9-yl]benzoate(CAS DataBase Reference)
• NIST Chemistry Reference: sodium 2-[3-(4-sulfonato-o-tolyliminio)-6-o-toluidino-3H-xanthen-9-yl]benzoate(6252-78-4)
• EPA Substance Registry System: sodium 2-[3-(4-sulfonato-o-tolyliminio)-6-o-toluidino-3H-xanthen-9-yl]benzoate(6252-78-4)

Safety Data

• Hazardous Substances Data: 6252-78-4(Hazardous Substances Data)

Usage

Preparation

Benzo[b]thiophen-3(2H)-one or?3-Oxo-2,3-dihydrobenzo[b]thiophene-2-carboxylic acid and 1,2-Acenaphthylenedione?or partial reduction of the condensation product.

Properties and Applications

brilliant pink to brilliant yellow red. Big red powder. Slightly soluble in Xylene for yellow red. In concentrated sulfuric acid for brilliant green, dilution after red flocks. Alkaline reduction leuco for red light purple; Acid reduction leuco for orange. Used for cotton, polyester/cotton blended, wool and silk dyeing. Standard Ironing Fastness Chlorine bleach Light Fastness Mercerized Oxygen bleach Soaping Fading Stain ISO 4 4 5 4-5 3 1 4-5

Standard

Ironing Fastness

Fading

Stain

ISO

4

InChI:InChI=1/C20H10O2S/c21-18-14-9-4-6-11-5-3-8-13(16(11)14)17(18)20-19(22)12-7-1-2-10-15(12)23-20/h1-10H/b20-17-

Upstream product

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• 108-24-7 acetic anhydride 
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• 493-57-2 benzo-[b]thiophene-2,3-dione 
• 127-09-3 sodium acetate 
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• 88690-93-1 2-(phenylimino)benzo-thiophen-3-(2H)-one 
• 53633-39-9 2-<4-(dimethylamino)phenyl>-imino benzo-thiophen-3-(2H)-one 
• 64-19-7 acetic acid 
• 56-23-5 tetrachloromethane 
• 91-20-3 naphthalene 
• 191031-07-9 3-hydroxy-benzo[b]thiophene-2-carboxylic acid 

Downstream Products

• 147-93-3 Thiosalicylic acid