HYDROQUINONE
APPEARANCE	WHITE NEEDLE CRYSTAL
MELTING POINT	173.4 °C
SOLUBILITY IN CH3COOH	CLEAR
RESIDUE ON IGNITION	0.01 OR LESS %
HEAVY METAL AS Pb	0.001 OR LESS %
IRON	0.001 OR LESS %
PURITY	99.7 %
RESORCINOL	NIL