Hydroquinone 99.9% min Hydroquinone photo grade high quality Hydroquinone for cosmetic
Hydroquinone
Usage: Can be used as intermediates of polymer, monomer inhibitor, dyes and auxiliary; as antioxidant in food and medicine industry; as anti coagulant for gas; developer for film, photos and X-ray film.
Hydroquinone
Usage: Can be used as intermediates of polymer, monomer inhibitor, dyes and auxiliary; as antioxidant in food and medicine industry; as anti coagulant for gas; developer for film, photos and X-ray film.
Item |
Specification |
Typical Test Result |
|
APPEARANCE |
White needle crystal or powder crystal |
White crystal |
|
PURITY |
PCT |
99.5-101.0 |
99.8 |
MELTING POINT |
DC |
171-175 |
172.0-174.0 |
WATER |
PCT |
0.3 MAX |
0.12 |
SOLUBILITY |
|
Transparent without insoluble matter |
Transparent without insoluble matter |
RESIDUE ON IGNITION ASH |
PCT |
0.05 Max |
0.001 |
HEAVY METALPb |
PCT |
0.002 Max |
0.0010 |
IRON Fe |
PCT |
0.002 Max |
0.0009 |
CAS NO:89-98-5
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