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
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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