| Identification | Back Directory | [Name]
1-(1-naphthylazo)-2-naphthol | [CAS]
2653-64-7 | [Synonyms]
Red 2R
C.I.12170
NSC 45575
NSC 47713
PigmentRed40
Bordeaux P51N
C.I. Solvent Red 4
C. I. Pigment Red 40
Solvent red 4 (C.I. 12170)
Pigment Red 40（C.I. 12170）
C.I.Solvent Red 4:C.I.12170
1-(1-Naphtylazo)-2-naphthol
1-(1-naphthylazo)-2-naphthol
1-(1-Naphtylazo)naphthalene-2-ol
2-Naphthalenol, 1-(1-naphthalenylazo)-
2-Naphthalenol, 1-[2-(1-naphthalenyl)diazenyl]-
(1Z)-1-(naphthalen-1-ylhydrazinylidene)naphthalen-2-one | [EINECS(EC#)]
220-176-4 | [Molecular Formula]
C20H14N2O | [MDL Number]
MFCD00071296 | [MOL File]
2653-64-7.mol | [Molecular Weight]
298.338 |
| Hazard Information | Back Directory | [Preparation]
Naphthalen-1-amine diazotization and Naphthalen-2-ol coupling. | [Properties and Applications]
yellow red. From toluene in the crystallization product melting point 224 ℃. Soluble in hot ethanol and benzene in red. In concentrated sulfuric acid to red light blue, dilution to red light purple solution, and then have red brown precipitation. Dye ethanol solution to join concentrated hydrochloric acid is dark red; Join concentrated sodium hydroxide solution for bright red light brown. Mainly used in oil, fat and wax, soap coloring.
|
Standard
|
Light Fastness
|
Heat-resistant(℃)
|
water
|
Sodium Carbonate(5%)
|
Hydrochloric acid(5%)
|
|
Melting point
|
Stable
|
|
ISO
|
General
|
220
|
150≥ 220
Sublimation
|
Insoluble
|
No change
|
No change
|
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|
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