Koch Acid

Name:
Koch Acid
Detailed information:

Chemistry name:	1-naphthylamine-3,6,8,-trisulfonic acid).
Chemistry structure:
Properties:
White solid. Slightly soluble in water.
Derivation:
Naphthalene-β-sufonic acid is sulfonated with 60% oleum at 165C, the resulting naphthalene-1,3,6-trisulfonic acid is nitrated and the product reduced with iron.
Use:
Azo dye intermediate.