2-Nitro-4'-aminodiphenylamine-2',4-disulfonic acid and process f

Details 2-Nitro-4'-aminodiphenylamine-2',4-disulfonic acid and process f 2-Nitro-4'-aminodiphenylamine-2',4-disulfonic acid and process f

1977-02-14

1981-03-24

Chan, Nicky

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260144, C07C14358

Patent

active

042579775

ABSTRACT:
2-Nitro-4'-aminodiphenylamine,2',4-disulphonic acid, a new intermediate for azo dyes, is prepared by the monosulphonation of 2-nitro-4'-aminodiphenylamine-4-sulphonic acid or 2-nitro-4'-acetylaminodiphenylamine-4-sulphonic acid.

REFERENCES:
patent: 869073 (1907-10-01), Erdmann et al.
patent: 3248379 (1966-04-01), Stanley
Ridyard, Chem. Abstract, 82, 141,598f, (1975), (Ger. Offen. 2,421,579-11/21/74).
Howard et al., Chem. Abstract, 55, 3078e, (1961), (Brit. 838,338-6/22/60).
Imperial, Chem. Abstract, 58, 4671f, (1963), (Belg. 610,754-5/24/62).
Froehlich, Chem. Abstract, 76, 87187g, (1972), (Ger. Offen. 2,121,176-11/18/71).

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