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CAS No.123-31-9
Chemical Name:Hydroquinone
Synonyms:HQ;he5;HE 5;Artra;diak5;Diak 5;QUINOL;Melanex;tenoxhq;Arctuvin
Molecular Formula:C6H6O2
Formula Weight:110.11
MOL File:123-31-9.mol
Hydroquinone Property
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)
Fp : 165 °C
storage temp. : Refrigerator
solubility : H2O: 50 mg/mL, clear
Water Solubility : 70 g/L (20 ºC)
Sensitive : Air & Light Sensitive
Merck : 14,4808
BRN : 605970
Stability:: Stable. Combustible. Incompatible with strong oxidizing agents, strong bases, oxygen, ferric salts. Light and air-sensitive. Discolours in air.
CAS DataBase Reference: 123-31-9(CAS DataBase Reference)
NIST Chemistry Reference: Hydroquinone(123-31-9)
EPA Substance Registry System: 1,4-Benzenediol(123-31-9)
Hazard Codes : Xn,N
Risk Statements : 22-40-41-43-50-68-R68-R50-R43-R41-R40-R22
Safety Statements : 26-36/37/39-61-S61-S36/37/39-S26
RIDADR : 2662
WGK Germany : 3
RTECS : MX3500000
TSCA : Yes
HazardClass : 9
PackingGroup : III
HS Code : 29072210
Hazardous Substances Data: 123-31-9(Hazardous Substances Data)

Hydroquinone Chemical Properties,Usage,Production

Chemical Properties
white needle-like crystals or crystalline powder
K channel agonist, antihypertensive
reducing agent prevents polymerization of resin monomers lightens darkened skin, light sensitive
Use as photographic reducer and developer; as reagent in the determination of small quantities of phosphate; as antioxidant. Depigmentor
ChEBI: A benzenediol comprising benzene core carrying two hydroxy substituents para to each other.
General Description
Light colored crystals or solutions. May irritate the skin, eyes and mucous membranes. Mildly toxic by ingestion or skin absorption.
Air & Water Reactions
Darkens on exposure to air and light. Miscible in water. Solutions become brown in air due to oxidation. Oxidation is very rapid in the presence of alkali.
Reactivity Profile
Hydroquinone is a slight explosion hazard when exposed to heat. Incompatible with strong oxidizing agents. Also incompatible with bases. Hydroquinone reacts with oxygen and sodium hydroxide. Reacts with ferric salts . Hot and/or concentrated NaOH can cause Hydroquinone to decompose exothermically at elevated temperature. (NFPA Pub. 491M, 1975, 385)
Health Hazard
Hydroquinone is very toxic; the probable oral lethal dose for humans is 50-500 mg/kg, or between 1 teaspoon and 1 ounce for a 150 lb. person. It is irritating but not corrosive. Fatal human doses have ranged from 5-12 grams, but 300-500 mg have been ingested daily for 3-5 months without ill effects. Death is apparently initiated by respiratory failure or anoxia.
Fire Hazard
Dust cloud may explode if ignited in an enclosed area. Hydroquinone can react with oxidizing materials and is rapidly oxidized in the presence of alkaline materials. Oxidizes in air.
Hydroquinone Preparation Products And Raw materials
Raw materials
Oxalic acid ZINC Aniline sulfate Manganese dioxide Manganese Bisphenol A Aniline Pyrocatechol Iron 1,4-Benzoquinone Activated carbon Sulfuric acid Sodium metabisulfite
Preparation Products
Chloral hydrate tert-Butylhydroquinone 2,5-Dimethoxy-4-chloroaniline ethyl 3,3-dimethylpent-4-en-1-oate Fluazifop-P-butyl Hydroxypropyl acrylate 1-(2,5-Dimethoxyphenyl)-2-oximino-1-propanone 7-HYDROXYISOFLAVONE 4-CHLORO-8-(TRIFLUOROMETHYL)QUINOLINE Butylated hydroxyanisole enbucrilate 2-AMINO-1-(2,5-DIMETHOXYPHENYL)-1-PROPANONE Pirenoxine X-PHOS 3-METHYL-2,5-DIHYDROTHIOPHENE-1,1-DIOXIDE 2-[N-(2-Cyanoethyl)-4-[(2,6-dichloro-4-nitrophenyl)azo]anilino]ethyl acetate ammonium manganous sulfate 1,2,4-Trimethoxybenzene Chloro(1,5-cyclooctadiene)iridium(I) dimer 3-SULFOLENE FLUAZIFOP-BUTYL 2-Hydroxyethyl methacrylate methyl(±)cis,trans-2,2-dimethyl-3-(2-methyl-1-propenyl cyclopropane carboxylate) N-NONYL ACRYLATE Fast Blue BB 2,3-DIMETHYL-1,3-BUTADIENE 2,5-Dihydroxybenzoic acid 4-[(6-Chloro-1,3-benzoxazol-2-yl)oxy]phenol 4-Phenoxyphenol 1,4-Dimethoxybenzene 1,4-Diacetoxybenzene 2-CHLOROPYRIMIDINE-4-CARBONITRILE 2,5-Dimethoxyaniline 2,5-Di-tert-butylhydroquinone Ethyl chrysanthemumate Quizalofop-p-ethyl 1,2-NAPHTHALIC ANHYDRIDE Allyl hexanoate (1,1-DIMETHYL-PROP-2-YNYL)-HYDRAZINE 4-Ethenylphenol acetate
Hydroquinone Suppliers      Global( 372)Suppliers     
VOT INTERNATIONAL BUSINESS CO.,LTD 0536-24567180536-8231856market@votchemical.comChina 236 55
Nanjing Lanbai Chemical Co., Ltd. +86 (25) 8549-9326,8549-9316,15366059326 13813836665+86 (25) 8549-9357lanbaichem@163.comChina 140 57
Shanghai Worldyang Chemical Co.,Ltd. +86-21-56791066,56795766,56795797+86-21-56795266sales@worldyachem.comChina 8743 58
Tianjin Zhongxin Chemtech Co., Ltd. 86(0)22-8988073986(0)22-89880739 ext 8030 / 86-22-66880086sales@tjzxchem.comChina 554 60
Hefei TNJ Chemical Industry Co.,Ltd. +86 (551) 65418684 65418696+86 (551) 65418697info@tnjchem.comChina 1944 62
Shanghai Aladdin Bio-Chem Technology Co.,LTD 021-20337333/400-620-6333021-50323701sale@aladdin-e.comChina 28587 65
JinJinLe Chemical 10106090 jjlechem@163.comChina 9621 58
Nanjing Zhipu Chemical Co., Ltd 025-83172869*83172967*18851668089*13813022170025-83311492derekzyp@njchemm.comChina 19 55
Shanghai Boyle Chemical Co., Ltd. Mr Qiu:021-50182298(Demestic market) Miss Xu:021-50180596(Abroad market)+86-21-57758967sales@boylechem.comChina 2221 55
J & K SCIENTIFIC LTD. 400-666-7788;market6@jkchemical.comChina 96832 76
123-31-9(Hydroquinone)Related Search:
Glycerol CAULOPHYLLOGENIN Phenol 4-Phenoxyphenol 3,6-Dihydroxyphthalonitrile 4-Heptyloxyphenol 2',5'-Dihydroxyacetophenone PBP 4-Hexyloxyphenol 1,2,5,8-TETRAHYDROXYANTHRAQUINONE 5-Methoxysalicylic acid 4-Propoxyphenol 2,4,5-Trimethoxybenzoic acid 2,5-DIMETHOXYPHENYL ISOCYANATE 5,8-Dihydroxy-1,4-naphthoquinone 2-Methyl-1,4-benzenediol (2-methylhydroquinone),2-methyl-4-benzenedio 4-tert-Butylcatechol Resorcinol
1,4-Benzenediol (hydroquinone) 1,4-Dihydroxy-benzeen 1,4-Dihydroxybenzen 1,4-dihydroxybenzen(czech) 1,4-Dihydroxy-benzol 1,4-Diidrobenzene 4-Hydroxyphenol alpha-hydroquinone Arctuvin Artra Benzene, p-dihydroxy- Benzohydroquinone Benzoquinol beta-quinol Black and White Bleaching Cream blackandwhitebleachingcream component of Artra Derma-Blanch Diak 5 diak5 Dihydroquinone Dihydroxybenzene Eldopacque Eldopaque Eldopaque forte Eldoquin Eldoquin forte HE 5 he5 Hidroquinone HQ Hydrochinon hydrochinon(czech,polish) Hydroquinol Hydroquinole Hydroquinone(form3) Hydroquinone, 1,4-benzenediol hydroquinone--1,4-benzenediol Idrochinone Melanex NCI-C55834 para-dihydroxybenzene paradioxybenzene para-dioxybenzene para-hydroquinone p-Benzenediol p-dihydroxy-benzen p-Dioxobenzene Phiaquin p-Hydroxybenzene p-Hydroxyphenol p-quinol pyrogentisticacid Solaquin forte Tecquinol Tecquinol tech. grade Tenox HQ tenoxhq
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