Hydroquinone

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Product Description:

English name: Hydroquinone

CAS number: 123-31-9
Molecular formula: C6H6O2
Molecular weight: 110.11
EINECS number: 204-617-8
MDL No. : MFCD00002339
Stats
Melting point 172-175 °C(lit.)
Boiling point 285 °C(lit.)
Density 1.32
Vapor density 3.81 (vs air)
Vapor pressure 1 mm Hg (132 °C)
Refractive index 1.6320
Flash point 165 °C
Storage conditions Store below +30°C.
Solubility H2O: 50 mg/mL, clear
Acidity coefficient (pKa)10.35(at 20℃)
Needle-Like Crystals or Crystalline Powder
Color White to off-white
The Odor was odorless
Water solubility 70 g/L (20 ºC)
Air & Light Sensitive
Merck14, 4808
BRN605970
Henry's Law Constant(x 10-9 atm? m3/mol): <2.07 at 20 °C (approximate - calculated from water solubility and vapor pressure)
Exposure limit NIOSH REL: 15-min ceiling 2, ID