Pigment Red 32
Pigment Red 32
CAS: 6410-29-3
Molecular Formula: C31H24N4O4
Pigment Red 32 - Names and Identifiers
| Name | Pigment Red 32 |
| Synonyms | 12320 Polymo Red FR pigment red 32 Pigment Red 32 C.I.PigmentRed32 C.I.Pigment Red 32 Pigment Permanent Pink BR Pigment -- Pigment Red 32 4-[[5-(anilino)carbonyl-2-methoxyphenyl]azo]-3-hydroxy-N-phenylnaphthalene-2- 2-Naphthalenecarboxamide, 3-hydroxy-4-2-methoxy-5-(phenylamino)carbonylphenylazo-N-phenyl- 3-hydroxy-4-[[2-methoxy-5-[(phenylamino)carbonyl]phenyl]azo]-N-phenyl-2-Naphthalenecarboxamide 3-Hydroxy-4-[[2-methoxy-5-[(phenylamino)carbonyl]phenyl]azo]-N-phenyl-2-naphthalenecarboxamide (4Z)-4-{2-[2-methoxy-5-(phenylcarbamoyl)phenyl]hydrazinylidene}-3-oxo-N-phenyl-3,4-dihydronaphthalene-2-carboxamide |
| CAS | 6410-29-3 |
| EINECS | 229-099-0 |
| InChI | InChI=1/C31H24N4O4/c1-39-27-17-16-21(30(37)32-22-11-4-2-5-12-22)19-26(27)34-35-28-24-15-9-8-10-20(24)18-25(29(28)36)31(38)33-23-13-6-3-7-14-23/h2-19,34H,1H3,(H,32,37)(H,33,38)/b35-28- |
Pigment Red 32 - Physico-chemical Properties
| Molecular Formula | C31H24N4O4 |
| Molar Mass | 516.55 |
| Density | 1.27 |
| Refractive Index | 1.656 |
| Physical and Chemical Properties | hue or color: Red Blue red powder. Bright colors. High temperature, sulfur-resistant, sun-resistant. No migration. |
| Use | This kind of pigment gives neutral red color, and its main application performance is similar to that of C.I. Pigment red 31, which is used for textile printing and dyeing, printing ink and coloring of rubber products. suitable for rubber and plastic coloring. |
Pigment Red 32 - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | suitable for rubber and plastic coloring. mainly used for coloring of rubber |
| production method | This product is the key to the preparation of 2-methoxy-5-benzoylaniline. Reaction equation operation process: 37.8 parts 2-methoxy-5-carboxylic acid nitrobenzene, 216 parts benzene and 18 parts aniline, heated to 75 ° C, add trichloro alkali Dropwise, after acylation at 107-110 °c for 8H, it was filtered and dried. 33 parts of dry matter and 40 parts of zinc powder were added to 245 parts of glacial acetic acid for reduction reaction for 8H to obtain 2-methoxy-5-phenylaniline in 93% yield. 47.6kg red base KD was added into the diazo pan, and water and hydrochloric acid were added at 20 ℃ and stirred. The color base solution was cooled to 0 ℃ and diazotized with 34.2kg 40% sodium nitrite solution, filtered, and the diazo liquid was used for standby. Weigh 59.8kg of phenol as, add it into dissolved sodium of 500L of water, add 52.6kg 33% caustic yellow, heat it to 92 ℃, dissolve it all, add it into a coupling pan of water and ice, and precipitate it with hydrochloric acid, the suspension Congo red paper turned blue. The diazo solution was added to the phenol suspension at 15 ° C., and 161.5kg of sodium acetate crystals were added at the same time, stirred for 1H, filtered, washed with water until neutral, and dried to obtain the finished product. |
Last Update：2024-04-09 19:05:13
