Process for the preparation of alkali metal salts of imidodisulf

Details Process for the preparation of alkali metal salts of imidodisulf Process for the preparation of alkali metal salts of imidodisulf

1981-10-14

1983-02-22

Vertiz, O. R.

Chemistry of inorganic compounds

Nitrogen or compound thereof

Oxygen containing

C01B 21093

Patent

active

043748180

ABSTRACT:
Ammonium nitrilotrisulfonate can be hydrolyzed, in a solid form or dissolved form, with alkali metal hydroxide to give alkali metal salts of imidodisulfonic acid or a mixture of alkali metal salts of imidodisulfonic acid and nitrilotrisulfonic acid, amidosulfonic acid and sulfuric acid. Ammonium nitrilotrisulfonate is preferably added to an aqueous solution of an alkali metal hydroxide, which contains at least 3 moles of alkali metal hydroxide per mole of ammonium nitrilotrisulfonate to be added.

REFERENCES:
patent: 2656252 (1953-10-01), Marsh

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