Hydroquinone

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Product description

　　Product Identification:

　　CAS No.: 123-31-9

　　Molecular Formula: C6H6O2

　　Specification:

ITEMS OF ANALYSIS	SPECIFICATION	RESULTS	TESTING METHOD
APPEARANCE:	WHITE NEEDLECRYSTAL	PASSED	IN HOUSE#PSB01
MELTING POINT (°C):	171 - 175	171.5	GB/T1.1-2009
ASSAY (%):	99.0 - 101.0	99.83	IN HOUSE#PSB10
WATER(%):	0.5MAX	0.1	GB/T1.1-2009
SOLUBILITY (20°C) (G/L) (%):	70	PASSED	GB/T1.1-2009
HEAVY METAL (AS PB) (PPM):	20 MAX	10	GB/T1.1-2009
INCINERATE RESIDUE CONTENT (%):	0.05 MAX	0.002	GB/T1.1-2009
FE (PPM):	20 MAX	6	GB/T1.1-2009
CONCLUSION:	CONFORM TO TECH GRADE

　　Application:

　　1. Hydroquinone is mainly used as developing agent in photograph

　　2. Antioxidant for rubber and gasoline, dye intermediate, etc.

　　3. Polymerization inhibitor for styrene, butadiene, isoprene, vinyl acetate, acrylonitrile and other resin or rubber monomers

　　4. Polymerization for styrene, acrylic and other vinyl monomers, terminating agent or stabilizer for high-temperature emulsion polymerization reaction

　　5. Developer in photoengraving

Benzoic Acid