... : C6H10O4 Molecular Formula: HOOC (CH2) 4COOH Indexes: Content> 99.70%, melting point > 151.5C, ammonia water chroma < 5, moisture < 0.20%, ash ... powderWhite crystalline powder Content% (m / m) >99.7099.7099.50Melting point C>151.5151.5151.0ammonia water chroma, platinum cobalt color ...