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Solvent Brown 5

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Solvent Brown 5 Basic information

Product Name:
Solvent Brown 5
Synonyms:
  • 4-(1-Naphtylazo)-1-naphthol
  • 4-(1-naphthalenylazo)-1-Naphthalenol
  • SUDAN BROWN
  • 4-(1-naphthylazo)-1-naphthol
  • 1-Naphthalenol, 4-(1-naphthalenylazo)-
  • Solvent brown 5 (C.I. 12020)
  • C.I. 12020
  • Solvent Brown 5
CAS:
2653-72-7
MF:
C20H14N2O
MW:
298.34
EINECS:
220-178-5
Mol File:
2653-72-7.mol
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Solvent Brown 5 Chemical Properties

Boiling point:
551.0±33.0 °C(Predicted)
Density 
1.20±0.1 g/cm3(Predicted)
pka
8.32±0.40(Predicted)
EPA Substance Registry System
1-Naphthalenol, 4-(1-naphthalenylazo)- (2653-72-7)
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Solvent Brown 5 Usage And Synthesis

Preparation

Naphthalen-1-amine diazotization, and Naphthalen-1-ol?coupling.

Properties and Applications

dark brown (NC raw lacquer). Soluble in ethanol for yellow brown. In concentrated sulfuric acid for deep green light black, dilution after blue black, then there is dark brown precipitation. Dye alcohol solution to join concentrated hydrochloric acid don’t change; Add 5% sodium hydroxide solution for blue light red. Used for oil, paraffin wax, cellulose and synthetic resin paint color.

Standard Light Fastness Heat-resistant(℃) water Sodium Carbonate(5%) Hydrochloric acid(5%)
Melting point Stable
ISO Poor 170 100≥100

Sublimation

Insoluble Good Good

Solvent Brown 5Supplier

Alfa Chemistry
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Alfa Chemistry
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Dideu Industries Group Limited
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+86-29-89586680 +86-15129568250
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JADECHEM (NINGBO) CO.,LTD.
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574-89075960
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info@jadechem-colours.com
Chemwill Asia Co.,Ltd.
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86-21-51086038
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chemwill_asia@126.com
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