| Name | 4,4-dihydroxy-7,7-iminodi(naphthalene-2-sulphonic acid) |
| Synonyms | Carbonyl J Acid 7,7-iminobis(4-hydroxynaphthalene-2-sulfonic acid) 2,2-IMINOBIS-5-HYDROXYNAPHTHALENE-7- SULPHONIC ACID 5,5-dihydroxy-2,2-dinaphthylamine-7,7-disulphonic acid 5,5-Dihydroxy-2,2-dinaphthylamine-7,7-disulphonic acid 4,4-dihydroxy-7,7-iminodi(naphthalene-2-sulphonic acid) |
| CAS | 87-03-6 |
| EINECS | 201-719-4 |
| InChI | InChI=1/C20H15NO8S2/c22-19-9-15(30(24,25)26)7-11-5-13(1-3-17(11)19)21-14-2-4-18-12(6-14)8-16(10-20(18)23)31(27,28)29/h1-10,21-23H,(H,24,25,26)(H,27,28,29) |
| Molecular Formula | C20H15NO8S2 |
| Molar Mass | 461.465 |
| Density | 1.734g/cm3 |
| pKa | -0.14±0.40(Predicted) |
| Refractive Index | 1.802 |
| Physical and Chemical Properties | Chemical properties gray-yellow paste. |
| Use | Uses as a direct dye and azo dye intermediates, such as the synthesis of direct peach 12B, direct resistant jujube, etc |
A gray-yellow paste.
from 2-amino -5-naphthol -7-sulfonic acid (I. E., J acid) in the presence of sodium bisulfite, boiling condensation at 103~105 ° C. For 36H.
dye intermediates, can be used to produce direct PEACH RED, direct resistant jujube red and azo dyes.
toxic, detailed toxicity has not been reported.
Packed in wooden boxes or iron barrels lined with plastic bags. Each tank (barrel) weighs 40kg or 50kg. Store in a cool, ventilated, dry place. Protection against heat and moisture. According to the provisions of toxic substances storage and transportation.