ChemicalBook > CAS DataBase List > 1-(1-naphthylazo)-2-naphthol
1-(1-naphthylazo)-2-naphthol
- Product Name
- 1-(1-naphthylazo)-2-naphthol
- CAS No.
- 2653-64-7
- Chemical Name
- 1-(1-naphthylazo)-2-naphthol
- 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）
- CBNumber
- CB1937354
- Molecular Formula
- C20H14N2O
- Formula Weight
- 298.34
- MOL File
- 2653-64-7.mol
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1-(1-naphthylazo)-2-naphthol Property
- Melting point:
- 230 °C
- Boiling point:
- 530.2±33.0 °C(Predicted)
- Density
- 1.20±0.1 g/cm3(Predicted)
- pka
- 12.03±0.50(Predicted)
- form
- powder to crystal
- color
- Orange to Brown to Dark purple
- CAS DataBase Reference
- 2653-64-7
- EPA Substance Registry System
- 2-Naphthalenol, 1-(1-naphthalenylazo)- (2653-64-7)
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Safety
- HS Code
- 2927.00.5000
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N-Bromosuccinimide Price
TCI Chemical
- Product number
- N0307
- Product name
- Naphthylamine Bordeaux (diluted with Barium Sulfate)
- Purity
- >90.0%(T)
- Packaging
- 25g
- Price
- $31
- Updated
- 2024/03/01
AK Scientific
- Product number
- 4801CA
- Product name
- 2-Naphthalenol,1-(1-naphthalenylazo)-
- Packaging
- 25g
- Price
- $126
- Updated
- 2021/12/16
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1-(1-naphthylazo)-2-naphthol Chemical Properties,Usage,Production
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 |
1-(1-naphthylazo)-2-naphthol Preparation Products And Raw materials
Raw materials
Preparation Products
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