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Solvent Brown 5

Solvent Brown 5 Structure
CAS No.
2653-72-7
Chemical Name:
Solvent Brown 5
Synonyms
C.I. 12020;SUDAN BROWN;CI NO 12020;Solvent Brown 5;C.I.Solventbrown5;4-(1-Naphtylazo)-1-naphthol;Solvent brown 5 (C.I. 12020);4-(1-naphthylazo)-1-naphthol;C.I.Solvent Brown 5:C.I.12020;Solvent Brown 5 ISO 9001:2015 REACH
CBNumber:
CB9134599
Molecular Formula:
C20H14N2O
Molecular Weight:
298.34
MOL File:
2653-72-7.mol

Solvent Brown 5 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)

Solvent Brown 5 Chemical Properties,Uses,Production

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 5 Preparation Products And Raw materials

Raw materials

Preparation Products

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Service Chemical Inc. 888-895-6920 Germany 6373 71 Inquiry
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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 C.I.Solventbrown5 CI NO 12020 1-(1-naphthylazo)-4-hydroxynaphthalene (4E)-4-(naphthalen-1-ylhydrazinylidene)naphthalen-1-one 1-Naphthalenol, 4-[2-(1-naphthalenyl)diazenyl]- Solvent Brown 5 ISO 9001:2015 REACH C.I.Solvent Brown 5:C.I.12020 2653-72-7