J ACID

Property: Slight soluble in hot water and hardly soluble in alcohol. Its alkali salts are easily soluble in water. Solution of J acid gives a brownish black precipitate met with hot ferric chloride, and gives a yellowish brown precipitate met with calcium chloride. It couples with diazotised bases at the 1-place in acidic medium and at the 6-place in alkali medium.Grade AGrade BAppearance: Greyish white to greyish brown powderCoupling value:92%min. 92%min.Solubility:4% max.4% max.