Sulphate Of Lead is a neutral lead pigment of crystalline structure and poor covering power. It is sometimes mixed with or substituted for white lead. It is found as a by-product in the preparation of aluminum acetate from alum and sugar of lead, or in obtaining acetic acid by the action of sulphuric acid upon lead acetate. It is also found in an impure state as a deposit in the lead chambers of sulphuric acid works. Lead sulphate is but slightly soluble in water and in dilute acids and is non-poisonous. The fact that it covers poorly, has a tendency to crack or "alligator," and does not mix well with oil, work against its general use as a paint pigment.