4,4-dihydroxy-7,7-iminodi(naphthalene-2-sulphonic acid) - Names and Identifiers
| 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)
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| CAS | 87-03-6
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| 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) |
4,4-dihydroxy-7,7-iminodi(naphthalene-2-sulphonic acid) - Physico-chemical Properties
| 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 |
4,4-dihydroxy-7,7-iminodi(naphthalene-2-sulphonic acid) - Upstream Downstream Industry
| Downstream Products | tetrasodium 5,5'-[iminobis[(1-hydroxy-3-sulphonato-6,2-naphthylene)azo(2,5-dimethoxy-4,1-phenylene)azo]]bis(salicylate)
Direct Blue 163
DIRECT RED 31
DIRECT RED 149
DIRECT VIOLET 66
C.I. Direct Blue 185
tetrasodium 5,5'-[iminobis[(1-hydroxy-3-sulphonato-6,2-naphthylene)azo(5-methoxy-2-methyl-4,1-phenylene)azo]]bis(salicylate)
C.I. Direct Blue 184
DIRECT VIOLET 14
C.I. Direct Violet 49
disodium [mu-[[7,7'-iminobis[4-hydroxy-3-[[2-hydroxy-5-(N-methylsulphamoyl)phenyl]azo]naphthalene-2-sulphonato]](6-)]]dicuprate(2-)
[1,1'-Biphenyl]-3,3'-disulfonic acid, 4,4'-bis[[1-hydroxy-6-[(5-hydroxy-7-sulfo-2-naphthalenyl)amino]-3-sulfo-2-naphthalenyl]azo]-, hexasodium salt
C.I. Acid Blue 36
tetrasodium [mu-[[7,7'-iminobis[3-[(3-chloro-2-hydroxy-5-sulphophenyl)azo]-4-hydroxynaphthalene-2-sulphonato]](8-)]]dicuprate(4-)
Direct Violet 102
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4,4-dihydroxy-7,7-iminodi(naphthalene-2-sulphonic acid) - Nature
Open Data Verified Data
Last Update：2024-01-02 23:10:35
4,4-dihydroxy-7,7-iminodi(naphthalene-2-sulphonic acid) - Preparation Method
Open Data Verified Data
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.
Last Update：2022-01-01 10:56:31
4,4-dihydroxy-7,7-iminodi(naphthalene-2-sulphonic acid) - Use
Open Data Verified Data
dye intermediates, can be used to produce direct PEACH RED, direct resistant jujube red and azo dyes.
Last Update：2022-01-01 10:56:30
4,4-dihydroxy-7,7-iminodi(naphthalene-2-sulphonic acid) - Safety
Open Data Verified Data
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.
Last Update：2022-01-01 10:56:31