Factory Supply Pharmaceutical Excipients List - Photographic grade Hydroquinone manufacturers in china Cas 123-31-9 Industry grade 99.9% – Guanlang Detail:
Hydroquinone
We are one of the leading hydroquinone manufacturers in china Cas 123-31-9
Product: hydroquinone
CAS No.: 123-31-9
EINECS： 204-617-8
Molecular formula:C6H6O2
Molecular weight: 110.11244
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Items |
Specification |
|
Content |
99-101% |
|
Melting Point |
171-175℃ |
|
Residue on ignition |
NMT 0.05% |
|
Fe |
NMT 0.002% |
Physical and chemical properties:
Appearance: white needle crystal.
Melting point: 172~175 ℃
Boiling point: 285-287 ℃
Relative density: 1.328g/cm3
Flash point: 165 ℃
Solubility: Hydroquinone is easily soluble in hot water, ethanol and ether, slightly soluble in benzene.
Properties: Hydroquinone is easy to change color when exposed in the air. Its aqueous solution can be oxidized to brown in air, and the oxidation is faster in alkaline medium. Easily soluble in ethanol and ether, soluble in 14 parts of water, slightly soluble in benzene. Relative density (d15) 1.332. The melting point is 170~171 ℃. The boiling point is 285-287 ℃. Flash point 165 ℃. Medium toxicity, median lethal dose (rat, oral) 320 mG/kG. Possibility of causing cancer.
Uses: Used as developer, dye and drug raw material; Hydroquinone is mainly used as a photographic developer. Hydroquinone and its alkylates are widely used as polymerization inhibitors added in the process of monomer storage and transportation
Storage: stored in a cool and ventilated warehouse. Keep away from kindling and heat source. The package shall be sealed and shall not contact with air. It shall be stored separately from oxidants, acids, alkalis and edible chemicals, and shall not be mixed. Fire fighting equipment of corresponding types and quantities shall be provided. The storage area shall be equipped with appropriate materials to contain the leakage.
Packaging: Paper bag with plastic lining, net weight of 25kg per package.
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Cooperation
We are commitment to offer you the aggressive price tag ,exceptional products and solutions high-quality, as well as fast delivery for Factory Supply Pharmaceutical Excipients List - Photographic grade Hydroquinone manufacturers in china Cas 123-31-9 Industry grade 99.9% – Guanlang, The product will supply to all over the world, such as: Slovenia, venezuela, South Africa, Our items are widely recognized and trusted by users and can meet continuously developing economic and social needs. We welcome new and old customers from all walks of life to contact us for future business relationships and achieving mutual success!
Hebei Guanlang Biotechnology Co., Ltd. belongs to Guanlang Group, which was founded in 2007 , located in Shijiazhuang city which is the capital of Hebei Province and hub sector among Beijing Tianjin and Hebei and has advantage of convenient transportation . Our company is a modern high-tech chemical enterprise with Research & Development, production and sales.We have our own factory and lab,also offer customized synthesis service for our customers.
By Anna from Auckland - 2018.09.08 17:09
After the signing of the contract, we received satisfactory goods in a short term, this is a commendable manufacturer.
By Agustin from Serbia - 2017.12.19 11:10
