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Solvent Red 25

Name:C.I.Solvent Red 25,C.I.26110

Molecular Structure: Double azo class

C.I.Solvent Red 25,C.I.26110,CAS 3176-79-2,380.44,C24H20N4O,Transparent Red B,Transparent Red S-130,Oil Red 301,Solvent Red B,Sudan Red B

C.I.Solvent Red 25,C.I.26110,CAS 3176-79-2,380.44,C24H20N4O,Transparent Red B,Transparent Red S-130,Oil Red 301,Solvent Red B,Sudan Red B

Molecular Formula:C24H20N4O

Molecular Weight: 380.44

CAS Registry Number:3176-79-2

Manufacturing Methods :2-Methyl-4-(o-tolyldiazenyl)benzenamine diazotization, and Naphthalen-2-ol coupling.

Properties and Applications: red. Red powder. Insoluble in water, soluble in ethanol, acetone and so on the many kinds of solvent, resistance to 5% of hydrochloric acid and sodium carbonate. In concentrated sulfuric acid to blue light green, dilution after red precipitation; In 10% of the sulfuric acid insoluble; In concentrated sodium hydroxide solution insoluble; In concentrated nitric acid for brown solution; In 10% sodium hydroxide solution insoluble.

Standard Light Fastness Heat-resistant(℃) water Sodium Carbonate(5%) Hydrochloric acid(5%)
Melting point Stable
ISO Good 150 Insoluble General Good

List of Suppliers:

Transparent Red B,Transparent Red S-130,Oil Red 301

Haining Hongyu Chemical Co., Ltd.

D&C Red No 17 W085 ( Les Colorants Wackherr )

Dikai Solvent Red 25 (Hangzhou Dikai Chemical Co Ltd)

Krasol Dark Red G ( Open Joint Stock Company ‘Krasitel’ )

Red S (Sinochem Liaoning Import & Export Corporation)

Solvent Red B(Sinochem Ningbo Imp & Exp Corp)

Sudan Red B( BASF Aktiengesellschaft )

Transparent Red B(Sinochem Jiangsu I/E Corp.)


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