Explicit Chemicals Pvt. Ltd. Manufactures Potassium Phthalimide. Explicit Chemicals Pvt. Ltd. Also manufactures different types of Drug Intermediates and Specialty Chemicals. Potassium Phthalimide is extensively used in pharmaceutical industry. Its balanced composition makes it a good solvent. It is available in white crystalline and white powder form. Its molecular weight is 185. It has 98% minimum purity. It has less than 300degree C melting point. It has less than 0.2% free phthalic acid content.