6-amino-2-(2,4-dimethylphenyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione
Solvent Yellow 44
CAS: 2478-20-8
Molecular Formula: C20H16N2O2
6-amino-2-(2,4-dimethylphenyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione - Names and Identifiers
6-amino-2-(2,4-dimethylphenyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione - Physico-chemical Properties
| Molecular Formula | C20H16N2O2 |
| Molar Mass | 316.35 |
| Density | 1.342±0.06 g/cm3(Predicted) |
| Boling Point | 591.4±50.0 °C(Predicted) |
| Flash Point | 311.5°C |
| Vapor Presure | 5.85E-14mmHg at 25°C |
| pKa | 5.17±0.20(Predicted) |
| Refractive Index | 1.727 |
| Physical and Chemical Properties | Chemical properties yellow powder. Insoluble in water, soluble in organic solvents. Brown precipitate in concentrated sulfuric acid, and yellow solution with light brown precipitate after dilution. |
| Use | Uses disperse lemon yellow for polyester and acetate fiber dyeing, with fluorescent green yellow, good levelness. Can also be used for resin, plastic, paint, ink coloring. |
6-amino-2-(2,4-dimethylphenyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione - Upstream Downstream Industry
| Raw Materials | Copper Propionic acid 1,8-Naphthalic anhydride 2,4-Dimethyl aniline 4-aminonaphthalic anhydride 4-Amino-1,8-naphthalic anhydride 2,4-Dimethyl aniline |
6-amino-2-(2,4-dimethylphenyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione - Nature
| EPA chemical information | 1H-Benz[de]isoquinoline-1,3(2H)-dione, 6-amino-2-(2,4-dimethylphenyl)- (2478-20-8) |
Last Update：2024-04-10 22:29:15
6-amino-2-(2,4-dimethylphenyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione - Production method
Method 1: Using 4-nitro-1, 8-naphthalene diformic anhydride and 2, 4-dimethylaniline as raw materials, first condensate the two, and then reduce the nitro to obtain the product. The finished product is filtered, ground and dried..
Method 2: Using 4-bromo (or chlorine)-1,8-naphthalene diformic anhydride and 2,4-dimethylaniline as raw materials, the two are first condensed, and then ammonia solution is used to obtain the product. The finished product is acidified, filtered and dried..
150mL glacial acetic acid, 20g 2, 4-dimethylaniline and 35g 4-chloro -1, 8-naphthalene dimethyl anhydride were added into the reactor, stirred and refluxed for 14h, cooled and filtered, the filter cake was washed with glacial acetic acid, washed with water, and dried to obtain 42.5g condensate.
150mL of isopropionic acid (anhydrous), 10g of condensate and 200mg of copper powder were added into the autoclave, then 8g of ammonia was introduced, and stirred at 200 ℃ for 15h at 3.5MPa. After the reaction is finished, the reaction is cooled, the pressure is relieved, the reactants are filtered, the mother liquor recovers the solvent, the filter cake is washed with dilute hydrochloric acid, and dried to obtain about 8.7g of yellow solid product.
Last Update：2024-04-10 22:29:15
6-amino-2-(2,4-dimethylphenyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione - Reference Information
| chemical properties | yellow powder. Insoluble in water, soluble in organic solvents. Brown precipitate in concentrated sulfuric acid, and yellow solution with light brown precipitate after dilution. |
| use | dispersed lemon yellow is used for dyeing polyester and acetate fiber to obtain fluorescent green yellow with good levelness. It can also be used for coloring resins, plastics, coatings, and inks. |
| production method | method 1: 4-nitro -1,8-naphthalene dimethyl anhydride and 2, 4-dimethylaniline are used as raw materials, the two are first condensed, and then the nitro group is reduced to obtain the product. The finished product is filtered, ground and dried.. Method 2: Using 4-bromo (or chlorine)-1,8-naphthalene diformic anhydride and 2,4-dimethylaniline as raw materials, the two are first condensed, and then ammonia solution is used to obtain the product. The finished product is acidified, filtered and dried.. 150mL of glacial acetic acid, 20g of 2,4-dimethylaniline and 35g of 4-chloro -1,8-naphthalene dimethyl anhydride were added into the reactor, stirred and refluxed for 14h, cooled and filtered, the filter cake was washed with glacial acetic acid, washed with water, and dried to obtain 42.5g of condensate. 150mL of isopropionic acid (anhydrous), 10g of condensate and 200mg of copper powder were added into the autoclave, then 8g of ammonia was introduced, and the reaction was stirred at 200 ℃ and 3.5MPa for 15h. After the reaction is finished, the reaction is cooled, the pressure is relieved, the reactants are filtered, the mother liquor recovers the solvent, the filter cake is washed with dilute hydrochloric acid, and dried to obtain about 8.7g of yellow solid product. |
| EPA chemical information | information provided by: ofmpub.epa.gov (external link) |
Last Update：2024-04-09 02:00:00
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