CAS No: 123-31-9, Chemical Name: Hydroquinone
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123-31-9 Hydroquinone

product Name Hydroquinone
Synonyms 1,4-Benzenediol; Quinol; Hydroxyquinone; 1,4-Dihydroxybenzene; benzene-1,4-diol; 6,7-dihydroxy-2H-chromen-2-one; 1,4-Dihydroxy benzene; 1,4-Dihydroxy-benzol
Molecular Formula C6H6O2
Molecular Weight 110.11244
InChI InChI=1/C9H6O4/c10-6-3-5-1-2-9(12)13-8(5)4-7(6)11/h1-4,10-11H
CAS Registry Number 123-31-9
EINECS 204-617-8
Molecular Structure 123-31-9 Hydroquinone
Density 1.32
Melting point 170-174℃
Boiling point 469.7°C at 760 mmHg
Refractive index 1.689
Flash point 201.4°C
Water solubility 70 g/L (20℃)
Vapour Pressur 1.91E-09mmHg at 25°C
Hazard Symbols  Xn:Harmful;
 N:Dangerous for the environment;
Risk Codes R22:;
R40:;
R41:;
R43:;
R50:;
R68:;
Safety Description S26:;
S36/37/39:;
S61:;