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Product FOB Price Min.Order Supply Ability Supplier
skin whitening powder cas 123-31-9 Supply pharmaceutical grade hydroquinone powder /HQ /1,4-Benzenediol
Cas No: 123-31-9
USD $ 7.1-10.0 / Kilogram 1 Kilogram 500 Metric Ton/Week Hebei yanxi chemical co.,LTD. Contact Supplier
Hydroquinone Competitive price/Top quality
Cas No: 123-31-9
USD $ 3.0-3.0 / Kilogram 1 Kilogram 1-100 Metric Ton/Month Hangzhou Dayangchem Co., Ltd. Contact Supplier
Cas No: 123-31-9
USD $ 1.0-1.0 / Kilogram 1 Kilogram 1 Metric Ton/Day Sparrow Chemical Co.,Ltd Contact Supplier
supply Hydroquinone in stock with best price
Cas No: 123-31-9
No Data 1 Gram 100 Metric Ton/Year Scale Chemical Corporation Contact Supplier
Factory Supply 1,4-Benzenediol
Cas No: 123-31-9
USD $ 2.0-3.0 / Gram 200 Gram 400 Metric Ton/Day Ality Holding Group Limited Contact Supplier
Hydroquinone 1,4-Benzenediol CAS No. 123-31-9
Cas No: 123-31-9
USD $ 150.0-200.0 / Kilogram 1 Kilogram 20 Metric Ton/Month Hebei Huanhao Biotechnology Co.,Ltd Contact Supplier
Hydroquinone,CAS 123-31-9
Cas No: 123-31-9
USD $ 1.0-1.0 / Kilogram 1 Kilogram 3000 Metric Ton/Year Hefei TNJ chemical industry co.,ltd Contact Supplier
Hydroquinone 99.5%(Photo Grade)/CAS NO 123-31-9
Cas No: 123-31-9
USD $ 2.6-2.6 / Metric Ton 1 Metric Ton 300 Metric Ton/Month Antimex Chemical Limied Contact Supplier
Cas No: 123-31-9
USD $ 120.0-130.0 / Kilogram 1 Kilogram 1 Metric Ton/Day DB BIOTECH CO., LTD Contact Supplier
High purity Best Price Hydroquinone
Cas No: 123-31-9
No Data 1 Kilogram Kilogram/Day Xi'an Harmonious Natural Bio-Technology Co., Ltd. Contact Supplier

123-31-9 Usage

Purification Methods

Crystallise quinol from acetone, *benzene, EtOH, EtOH/*benzene, water or acetonitrile (25g in 30mL), preferably under nitrogen. Dry it under vacuum. [Wolfenden et al. J Am Chem Soc 109 463 1987, Beilstein 6 H 836, 6 IV 5712.]

Contact allergens

Hydroquinone is used in photography developers (black and white, X-ray, and microfilms), in plastics, in hair dyes as an antioxidant and hair colorant. Hydroquinone is found in many skin bleaching creams.


Use as photographic reducer and developer; as reagent in the determination of small quantities of phosphate; as antioxidant. Depigmentor

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.


As photographic reducer and developer; as reagent in the determination of small quantities of phosphate; as antioxidant.


reducing agent prevents polymerization of resin monomers lightens darkened skin, light sensitive

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)

General Description

Light colored crystals or solutions. May irritate the skin, eyes and mucous membranes. Mildly toxic by ingestion or skin absorption.


K channel agonist, antihypertensive


ChEBI: A benzenediol comprising benzene core carrying two hydroxy substituents para to each other.

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.

Chemical Properties

white needle-like crystals or crystalline powder

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.



123-31-9 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
USP (1324002)  Hydroquinone  United States Pharmacopeia (USP) Reference Standard 123-31-9 1324002-500MG 4,662.45CNY Detail
Sigma-Aldrich (PHR1469)  Hydroquinone  secondary pharmaceutical standard; traceable to USP 123-31-9 PHR1469-1G 791.15CNY Detail
Sigma-Aldrich (74347)  Hydroquinone  certified reference material, TraceCERT® 123-31-9 74347-100MG 992.16CNY Detail
Alfa Aesar (A11411)  Hydroquinone, 99%    123-31-9 5000g 2326.0CNY Detail
Alfa Aesar (A11411)  Hydroquinone, 99%    123-31-9 1000g 658.0CNY Detail
Alfa Aesar (A11411)  Hydroquinone, 99%    123-31-9 250g 226.0CNY Detail
TCI America (H0186)  Hydroquinone  >99.0%(T) 123-31-9 500g 280.00CNY Detail
TCI America (H0186)  Hydroquinone  >99.0%(T) 123-31-9 25g 115.00CNY Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017


1.1 GHS Product identifier

Product name hydroquinone

1.2 Other means of identification

Product number -
Other names 1,4-benzenediol

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Hydroquinone is used as a developing agent in black-and-white photography, lithography, and x-ray films. It is also used as an intermediate to produce antioxidants for rubber and food. It is added to a number of industrial monomers to inhibit polymerization during shipping, storage, and processing.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:123-31-9 SDS

123-31-9Related news

Electrochemical detection of Hydroquinone (cas 123-31-9) based on MoS2/reduced graphene oxide nanocomposites09/27/2019

Layered molybdenum disulfide/reduced graphene oxide (MoS2/RGO) nanocomposites were synthesized by solvothermal method, and were characterized by high-resolution transmission electron microscopy (HRTEM), field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), X-rayphotoelec...detailed

Highly efficient biosynthesis of α-arbutin from Hydroquinone (cas 123-31-9) by an amylosucrase from Cellulomonas carboniz09/25/2019

Few reports about the biosynthesis of α-arbutin using amylosucrase are available. In this work, an amylosucrase from Cellulomonas carboniz T26, CcAS, was identified for highly efficient synthesis of α-arbutin using 20 mM sucrose and 5 mM hydroquinone as a glucosyl donor and acceptor, respectiv...detailed

Voltammetric determination of catechol and Hydroquinone (cas 123-31-9) at poly(murexide) modified glassy carbon electrode09/24/2019

The electrochemical study of Catechol (CC) was studied in presence of Hydroquinone (HQ) using poly(murexide) modified glassy carbon electrode (MGCE) by cyclic voltammetric study. The modified electrode exhibited good affirmative response towards the electro chemical oxidation of CC in presence o...detailed

Intensification of paracetamol (acetaminophen) synthesis from Hydroquinone (cas 123-31-9) using ultrasound09/09/2019

Paracetamol (acetaminophen) is one of the most frequently used analgesic and antipyretic drugs. This work deals with ultrasound assisted synthesis (UAS) of paracetamol from hydroquinone using ammonium acetate as an amidating agent. The optimization of various reaction and ultrasound parameters w...detailed

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