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Solvent Red 25

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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
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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
pka
13.45±0.50(Predicted)
Colour Index 
26110
color 
Very Dark Red
CAS DataBase Reference
3176-79-2(CAS DataBase Reference)
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Safety Information

WGK Germany 
3

MSDS

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Solvent Red 25 Usage And Synthesis

Uses

Solvent Red 25 (cas# 3176-79-2) is a useful research chemical. Dyes and metabolites, Environmental Testing.

Preparation

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

Solvent Red 25 Preparation Products And Raw materials

Raw materials

Solvent Red 25Supplier

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