ChemicalBook Product Catalog Dyes and Pigments dye Solvent Dyes Solvent Red 25

Solvent Red 25

Solvent Red 25 Basic information
Product Name:Solvent Red 25
Synonyms:1-[4-(3-Methylphenylazo)-3-methylphenylazo]naphthalene-2-ol;Einecs 221-647-7;Sudan Red B/Solvent Red 25;Sudan B;1-[[3-methyl-4-[(3-methylphenyl)azo]phenyl]azo]-2-naphthaleno;C.I.Solventred25;TransparentredYJO-1;solvent red 25
CAS:3176-79-2
MF:C24H20N4O
MW:380.44
EINECS:221-647-7
Product Categories:Organics;Solvent Dyestuff
Mol File:3176-79-2.mol
Solvent Red 25 Structure
Solvent Red 25 Chemical Properties
Melting point 173-175 °C(lit.)
Boiling point 618.8±55.0 °C(Predicted)
density 1.19±0.1 g/cm3(Predicted)
storage temp. Refrigerator
solubility Acetonitrile (Slightly), Dichloromethane (Slightly), DMSO (Slightly)
form Solid
pka13.45±0.50(Predicted)
Colour Index 26110
color Very Dark Red
CAS DataBase Reference3176-79-2(CAS DataBase Reference)
Safety Information
WGK Germany 3
MSDS Information
ProviderLanguage
SigmaAldrich English
Solvent Red 25 Usage And Synthesis
UsesSolvent Red 25 (cas# 3176-79-2) is a useful research chemical. Dyes and metabolites, Environmental Testing.
Preparation2-Methyl-4-(o-tolyldiazenyl)benzenamine diazotization, and Naphthalen-2-ol coupling.
Properties and Applicationsred. 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
Solvent Red 25 Preparation Products And Raw materials
Raw materialsm-Toluidine-->O-AMINOAZOTOLUENE-->2-Naphthol
Solvent Red 250 Vat Red 41 Solvent Red 247 Solvent Red 23 Solvent Red 196 Solvent Red 210 SOLVENT RED 195 Solvent Red 24 Solvent Red 243 Solvent Red 248 Solvent Red 172 Solvent Red 245 Solvent Red 207 Solvent Red 197 Solvent Red 179 Solvent Red 27 Solvent Red 25 Sudan I
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