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Tianjin Zhongxin Chemtech Co., Ltd.

123-31-9, Hq, Hydroquinone manufacturer / supplier in China, offering Hydroquinone (HQ) CAS 123-31-9, Benzyl Alcohol CAS 100-51-6, Acid Protease 9025-49-4 (Enzymes Preparation) CAS 9025-49-4 and so on.

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Hydroquinone (HQ) CAS 123-31-9

FOB Price: Get Latest Price
Min. Order: 1 kg
Port: Shanghai, China
Production Capacity: 1000
Payment Terms: L/C, T/T, D/P

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Basic Info
  • Model NO.: CT3206
  • Appearance: Crystal
  • Colour: White
  • Trademark: CT3206
  • Specification: 99-101%
  • HS Code: 29
  • Type: Quinones
  • Quality: Industrial
  • Hydroquinone: Hydroquinone
  • Transport Package: in 25kgs Net Bag
  • Origin: China
Product Description
Hydroquinone Basic information
Product Name:Hydroquinone
Synonyms: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
Mol File:123-31-9.mol
Hydroquinone Chemical Properties
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)
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 Reference123-31-9(CAS DataBase Reference)
NIST Chemistry ReferenceHydroquinone(123-31-9)
EPA Substance Registry System1,4-Benzenediol(123-31-9)
Safety Information
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
WGK Germany 3
RTECS MX3500000
HazardClass 9
PackingGroup III
HS Code 29072210
Hazardous Substances Data123-31-9(Hazardous Substances Data)
Hydroquinone Usage And Synthesis
Chemical Propertieswhite needle-like crystals or crystalline powder
UsageK channel agonist, antihypertensive
Usagereducing agent prevents polymerization of resin monomers lightens darkened skin, light sensitive
UsageUse as photographic reducer and developer; as reagent in the determination of small quantities of phosphate; as antioxidant. Depigmentor
DefinitionChEBI: A benzenediol comprising benzene core carrying two hydroxy substituents para to each other.
General DescriptionLight colored crystals or solutions. May irritate the skin, eyes and mucous membranes. Mildly toxic by ingestion or skin absorption.
Air & Water ReactionsDarkens 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 ProfileHydroquinone 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 HazardHydroquinone 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 HazardDust 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 (HQ) CAS 123-31-9Hydroquinone (HQ) CAS 123-31-9Hydroquinone (HQ) CAS 123-31-9

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