ChemicalBook Chinese  Japanese  Germany

ChemicalBook >> CAS DataBase List >> Hydroquinone


CAS No. 123-31-9
Chemical Name: Hydroquinone
Synonyms: HQ;he5;HE 5;Artra;diak5;QUINOL;Diak 5;Melanex;tenoxhq;Phiaquin
CBNumber: CB6717931
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
pka: 10.35(at 20℃)
form : Needle-Like Crystals or Crystalline Powder
color : White to off-white
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)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
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)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501
H351 Suspected of causing cancer Carcinogenicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501
H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:
P201 Obtain special instructions before use.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P308+P313 IF exposed or concerned: Get medical advice/attention.
P501 Dispose of contents/container to..…

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( 378)Suppliers     
Supplier Tel Fax Email Country ProdList Advantage
Shenzhen Sendi Biotechnology Co.Ltd. 0755-23311925 18102838259
0755-23311925 CHINA 3230 55
0536-8231856 China 236 55
Nanjing Lanbai Chemical Co., Ltd. +86 (25) 8549-9326,8549-9316,15366059326 13813836665
+86 (25) 8549-9357 China 140 57
Shanghai Worldyang Chemical Co.,Ltd. +86-21-56791066,56795766,56795797
+86-21-56795266 China 8776 58
Tianjin Zhongxin Chemtech Co., Ltd. 86(0)22-89880739
86(0)22-89880739 ext 8030 / 86-22-66880086 China 554 60
Hefei TNJ Chemical Industry Co.,Ltd. +86 (551) 65418684 65418696
+86 (551) 65418697 China 1944 62
Shanghai Aladdin Bio-Chem Technology Co.,LTD 021-20337333/400-620-6333
021-50323701 China 25125 65
Nanjing Zhipu Chemical Co., Ltd 025-83172869*83172967*18851668089*13813022170
025-83311492 China 19 55
Shanghai Boyle Chemical Co., Ltd. Mr Qiu:021-50182298(Demestic market) Miss Xu:021-50180596(Abroad market)
+86-21-57758967 China 2221 55
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96831 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
PINDAC Hydroquinone, 99.5%, 99.5% Hydrochinone 0 Hydroquinone ReagentPlus(R), >=99.5% HYDROQUINONE GPR RECTAPUR PHOTO GRADE Hydroquinone HYDROQUINONE PHOTO GRADE 99% p-Benzediel p-Dihydroxybenzene Hydroquinol 1,4-Benzenediol 1,4-Dihydroxybenzene Quinol Hydroquinone, p.a. 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 Tequinol USAF ek-356 usafek-356 Redox Catalysts (Environmentally-friendly Oxidation) Environmentally-friendly Oxidation HYDROXYQUINOL HYDROCHINONE HYDROQUINONE AKOS BBS-00004220 Arachidonate 12-Lipoxygenase A to C BioChemical Building Blocks Biochemicals and Reagents 1,4-BENZENEDIOL 1,4-DIHYDROXYBENZENE 123-31-9 p-Djbydroxybenzene P-DIOXYBENZENE
Copyright 2017 © ChemicalBook. All rights reserved