Hydroquinone cas123-31-9

1,4-benzenediol, also known as hydroquinone, is an important chemical raw material. In recent years, domestic demand for it has shown a growing trend, and the consumption field has expanded year by year. 1,4-benzenediol is widely used as an important raw material, intermediate and auxiliary agent for medicine, pesticide, dyestuff and rubber Chemicalbook glue, etc. It is mainly used for developer, anthraquinone dye, azo dye, rubber anti-aging agent and single Body polymerization inhibitor, food stabilizer and coating antioxidant, petroleum anticoagulant, synthetic ammonia catalyst, etc


Hydroquinone cas123-31-9

Chemical name: 4-Hydroxybenzoic acid ethyl ester
Product name:Ethyl 4-hydroxybenzoate
Molecular formula:C9H10O3
Molecular weight:166.18
Physical and chemical properties:White crystal with a little bitter taste. Easily soluble in alcohol, ether and acetone, almost insoluble in water. Boiling point is 297-298℃.


Product Name Benazolin Ethyl
Item Index
GB 1886.31-2015 BP USP
Appearance White crystalline powder Colorless crystal or white crystalline powder /
Content (dry basis) %≥ 99.0-100.5 99.0-100.5 98.0-102.0
Melting point℃ 115-118 115-118 115-118
Acidity / Qualified Qualified
Sulfate (SO42-) %≤ 0.024 / /
Heavy metal (Pb) %≤ 0.001 / /
Arsenic (AS) %≤ 0.0001 / /
Drying loss %≤ 0.5 / 0.5
Residue on ignition %≤ 0.05 0.1 0.1
Mass fraction of free acid (PHBA)% ≤ 0.55 / /
Related substances / Qualified Qualified
Appearance / Clear and transparent Qualified
Identification test / Qualified Qualified


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