C.I. Azoic Coupling Component No. 23
4'-chloro-3-hydroxy-2',5'-dimethoxy-2-naphthanilide
CAS: 4273-92-1
Molecular Formula: C19H16ClNO4
C.I. Azoic Coupling Component No. 23 - Names and Identifiers
| Name | 4'-chloro-3-hydroxy-2',5'-dimethoxy-2-naphthanilide |
| Synonyms | C.I. 37555 Conazoic BC Anarthol AS-LC Naphthol AS-LC Dycosthol AS-LC Pigment organic azotol O C.I.Azoic Coupling Component 23 C.I. Azoic Coupling Component 23 C.I. Azoic Coupling Component No. 23 4'-chloro-3-hydroxy-2',5'-dimethoxy-2-naphthanilide 4'-Chloro-3-hydroxy-2',5'-dimethoxy-2-naphthanilide 2-Hydroxy-3-Naphthoyl-(4'Chloro-2', 5'-dimethoxy) Aniline N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide |
| CAS | 4273-92-1 |
| EINECS | 224-270-6 |
| InChI | InChI=1/C19H16ClNO4/c1-24-17-10-15(18(25-2)9-14(17)20)21-19(23)13-7-11-5-3-4-6-12(11)8-16(13)22/h3-10,22H,1-2H3,(H,21,23) |
C.I. Azoic Coupling Component No. 23 - Physico-chemical Properties
| Molecular Formula | C19H16ClNO4 |
| Molar Mass | 357.79 |
| Density | 1.371±0.06 g/cm3(Predicted) |
| Melting Point | 190°C |
| Boling Point | 479.8±45.0 °C(Predicted) |
| Flash Point | 244°C |
| Solubility | Chloroform (Slightly, Heated), DMSO (Slightly) |
| Vapor Presure | 0-0Pa at 25℃ |
| Appearance | Solid |
| Color | Pale Grey to Light Grey |
| pKa | 8.65±0.40(Predicted) |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.682 |
| Physical and Chemical Properties | Melting Point: 190°C |
| Use | Mainly used for cotton fabric, viscose fiber, silk, nylon and polyester dyeing, and can be used as yellow GC, orange GC color |
C.I. Azoic Coupling Component No. 23 - Reference Information
| LogP | 2.85 at 23℃ and pH7.1 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| introduction | chromophenol AS-LC is a chromophenol derivative. a chromophenol can often be coupled with different chromodiazonium salts to form different azo dyes with different colors and fastness. Most varieties of chromophenols are formed by the condensation of 3-hydroxy-2-naphthoic acid with different aromatic amines after acyl chlorination. There are also carbazole, oxyfluorene, and hydroxylformamide derivatives of anthracene. For example, tryptopol AS-LC, tryptopol AS-PH, tryptopol AS-OL, tryptopol AS-D, etc. |
| use | tryptopol AS-LC is a tryptopol derivative. Chromophenol AS-LC is also called 3-hydroxy-2-naphthoyl-(4'-chloro-2', 5'-dimethoxy) aniline. Chromophenol AS-LC is mainly used for cotton, viscose fiber, silk, silk, The dyeing of nylon and polyester is generally not used for printing. It is a primer for dyeing orange-yellow brown. It is commonly used for color development of yellow-based GC and orange-based GC. It has high affinity for cotton and is an intermediate for preparing organic pigments. Most varieties of chromophenols are formed by condensation of 3-hydroxy-2-naphthoic acid with different aromatic amines after acyl chlorination. There are also carbazole, oxyfluorene, and hydroxylformamide derivatives of anthracene. For example, tryptopol AS-LC, tryptopol AS-PH, tryptopol AS-OL, tryptopol AS-D, etc. |
| Production method | Using 2,3-acid and 2, 5-dimethoxy-4-chloroaniline as raw materials and chlorobenzene as the medium. 2,3-acid is first salted, and then condensed with 2, 5-dimethoxy-4-chloroaniline in the presence of phosphorus trichloride to obtain the product.. |
Last Update：2024-04-10 22:29:15
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