Properties Diphenhydramine citrate is white powder,can be used in animal medicine,and used as pharmaceutical Intermediates.For more details,please contact with sales20@tnjchem.com Specification Index name Spec Appearance White powder Identification A B C should complies Melting point 146 ~150℃ Moisture <0.04% Heavy Metals <0.002% Assay 98.0 ~ 100.5% Residue on ignition NMT0.1%