naphtholas-trpurifiedcrystalline
naphthol as-tr purified crystalline
CAS: 92-76-2
Molecular Formula: C18H14ClNO2
naphtholas-trpurifiedcrystalline - Names and Identifiers
| Name | naphthol as-tr purified crystalline |
| Synonyms | C.I. 37525 NAPHTHOL AS-TR naphthol AS-TR Azoic coupling component 8 C.I. Azoic Coupling Component 8 naphtholas-trpurifiedcrystalline naphthol as-tr purified crystalline 4'-CHLORO-3-HYDROXY-2-NAPHTHO-O-TOLUIDIDE 4-chloro-3-hydroxy-2-methyl-2-naphthanilide 4'-CHLORO-3-HYDROXY-2'-METHYL-2-NAPHTHANILIDE N-(4-chloro-2-methylphenyl)-3-hydroxy-2-naphthamide 3-HYDROXY-2-NAPHTHOIC ACID 4'-CHLORO-2'-METHYLANILIDE n-(4-chloro-2-methylphenyl)-3-hydroxy-2-naphthalenecarboxamid N-(4-chloro-2-methylphenyl)-3-hydroxynaphthalene-2-carboxamide |
| CAS | 92-76-2 |
| EINECS | 202-187-6 |
| InChI | InChI=1/C18H14ClNO2/c1-11-8-14(19)6-7-16(11)20-18(22)15-9-12-4-2-3-5-13(12)10-17(15)21/h2-10,21H,1H3,(H,20,22) |
naphtholas-trpurifiedcrystalline - Physico-chemical Properties
| Molecular Formula | C18H14ClNO2 |
| Molar Mass | 311.76 |
| Density | 1.36g/cm3 |
| Boling Point | 426.1°C at 760 mmHg |
| Flash Point | 211.5°C |
| Vapor Presure | 7.31E-08mmHg at 25°C |
| Refractive Index | 1.717 |
| Physical and Chemical Properties | Dark beige powder. Melting point 244-245 °c. Insoluble in water, soluble in pyridine. The dye was nearly colorless solution in concentrated sulfuric acid, yellow solution in sodium hydroxide, insoluble in sodium carbonate solution. Sensitive to air. |
naphtholas-trpurifiedcrystalline - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | chromophenol AS-TR is a primer for cotton yarn dyeing orange, red, red, brilliant red, bordeaux, navy blue, blue and other colors. For example, it is golden yellow when coupled with orange base GG, jujube red when coupled with jujube red base GP, big red when coupled with big red base RC, brilliant red when coupled with red base ITR, navy blue when coupled with blue base B, etc. This product is mainly used for dyeing cotton, viscose fiber, silk, nylon and acetate fiber, and also used for cotton printing. Medium affinity for cotton. |
| Production method | Using 2,3-acid and 2-methyl-4-chloroaniline as raw materials, the 2,3-acid is first used in chlorobenzene The medium reacts with an alkali to form a salt, and then it is condensed with 2-methyl-4-chloroaniline in the presence of phosphorus trichloride to obtain a product. After neutralization and distillation, the chlorobenzene is recovered and filtered, dried and crushed to obtain the finished product.. |
Last Update：2024-04-10 22:29:15
