Detailed Product Description phthalic acid:Appearance and Properties: colorless liquid or white crystalline powder, soluble in alcohol, acetic acid, micro-soluble in water, insoluble in petroleum ether, chloroform, benzene, density: 1.593Molecular Formula: C6H4(COOH)2 Molecular Weight:166.13 Quality StandardAssay:99.8%Cl:≤0.002%SO4:≤0.002%Fe:≤0.0005%Pb:≤0.001%Ignition residue:≤0.02%