| Identification | Back Directory | [Name]
5,6-diaminonaphthalene-1-sulphonic acid | [CAS]
84-92-4 | [Synonyms]
1,2DIAMINONAPTHALANE-5-SULPHONICACID
5,6-Diamino-1-naphthalenesulfonic acid
5,6-diaminonaphthalene-1-sulfonic acid
5,6-diaminonaphthalene-1-sulphonic acid
5,6-bis(azanyl)naphthalene-1-sulfonic acid | [EINECS(EC#)]
201-574-7 | [Molecular Formula]
C10H10N2O3S | [MOL File]
84-92-4.mol | [Molecular Weight]
238.263 |
| Hazard Information | Back Directory | [Uses]
5,6-Diaminonaphthalene-1-sulfonic acid is used as an intermediate for naphthotriazoles. A green pigment (C.I. Pigment Green 9) is obtained by treatment with iron(III) salts. | [Production Methods]
1-Aminonaphthalene-5-sulfonic acid is coupled with diazotized aniline, and the resulting isolated azo compound (purpurin base) is reduced by heating with zinc and ammonia at 100℃ and allowing ammonia and aniline to distill off. The product 5,6-diaminonaphthalene-1-sulphonic acid is isolated in 76 % yield by acidification of the screened liquors. |
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