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Hydroquinone

Hydroquinone
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 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)
Flash point:
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)
SAFETY
  • 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)
Symbol(GHS):
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 price More Price(18)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 74347 Hydroquinone certified reference material, TraceCERT 123-31-9 100mg $83.5 2017-11-08 Buy
Sigma-Aldrich 1324002 Hydroquinone United States Pharmacopeia (USP) Reference Standard 123-31-9 500mg $348.4 2017-11-08 Buy
Alfa Aesar A11411 Hydroquinone, 99% 123-31-9 250g $41.2 2017-11-08 Buy
Alfa Aesar A11411 Hydroquinone, 99% 123-31-9 1000g $120 2017-11-08 Buy
Sigma-Aldrich 8.22333 Hydroquinone 123-31-9 1EA $28.75 2017-11-08 Buy

Hydroquinone Chemical Properties,Uses,Production

Chemical Properties

white needle-like crystals or crystalline powder

Uses

K channel agonist, antihypertensive

Uses

Hydroquinone

Uses

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

Uses

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

Definition

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

Preparation Products


Hydroquinone Suppliers

Global( 380)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Shenzhen Sendi Biotechnology Co.Ltd.
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0755-23311925 Abel@chembj.com CHINA 3230 55
VOT INTERNATIONAL BUSINESS CO.,LTD 0536-2456718
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Nanjing Lanbai Chemical Co., Ltd. +86 (25) 8549-9326,8549-9316,15366059326 13813836665
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Shanghai Worldyang Chemical Co.,Ltd. +86-21-56791066,56795766,56795797
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Tianjin Zhongxin Chemtech Co., Ltd. 86(0)22-89880739
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Nanjing Zhipu Chemical Co., Ltd 025-83172869*83172967*18851668089*13813022170
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Shanghai Boyle Chemical Co., Ltd. Mr Qiu:021-50182298(Demestic market) Miss Xu:021-50180596(Abroad market)
+86-21-57758967 sales@boylechem.com China 2221 55
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
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