Methyl Paraben

Item Standard Appearance Colorless Crystals Or White Crystalline Powder Purity (on Dry Base ) % 99.0-100.5 Identification Qualified Appearance Of Solution Qualified Acidity Qualified Related Substances Qualified Sulfate(SO42-) % = 0.10 Residue % = 0.10 Melting Point ? 125-128 Organic Volatile Impurities Qualified
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