(1)-2-Hydroxy-1,2-diphenylethan-1-one
CAS number: 119-53-9
Groups: All Chemicals
Information:
IUPAC Name: 2-hydroxy-1,2-diphenyl-ethanone
CAS Number: 119-53-9
Chemical Formula: C14H12O2
Synonyms: (+-)-Benzoin, (1)-2-Hydroxy-1,2-diphenylethan-1-one, .alpha.-Hydroxy-.alpha.-phenylacetophenone, 119-53-9, 2-Hydroxy-1, 2-diphenylethanone, 2-Hydroxy-1,2-diphenylethanone, 2-Hydroxy-2-phenylacetophenone, 4-08-00-01279 (Beilstein Handbook Reference), 579-44-2, 8050-35-9, 9000-05-9, 9000-73-1, 91845-21-5, Acetophenone, 2-hydroxy-2-phenyl-, AI3-00851, AIDS-017958, AIDS017958, alpha-Hydroxy-alpha-phenylacetophenone, alpha-Hydroxybenzyl phenyl ketone, Benjamin gum, Benzoin, Benzoin (VAN) (8CI), Benzoin absolute, Benzoin extract (resinoid), Benzoin gum, Benzoin gum, Sumatra, Benzoin Malasia, Benzoin resin, Benzoin resinoid, Benzoin resinoid, Siam, Benzoin Siam, Benzoin Sumatra, Benzoin tincture, Benzoin usp, Benzoylphenylcarbinol, Bitter almond oil camphor, Bitter-almond-oil camphor, BRN 0391839, C01408, CCRIS 6696, CCRIS 75, CHEBI:17682, DL-BENZOIN, EINECS 204-331-3, EINECS 209-441-5, EINECS 232-523-7, Ethanone, 2-hydroxy-1,2-diphenyl-, Ethanone, 2-hydroxy-1,2-diphenyl-, mixt. with aloe, storax and Tolu B
alsam, tincture, Ethanone, 2-hydroxy-1,2-diphenyl-, (.+/-.)-, FEMA No. 2132, FEMA No. 2133, Fenyl-alpha-hydroxybenzylketon [Czech], Gum Benjamin, GUM BENZOIN, Gum benzoin siam, Gum sumatra, HSDB 1929, HSDB 384, Hyperabsolute benzoin, Siam, Ketone, .alpha.-hydroxybenzyl phenyl, Ketone, alpha-hydroxybenzyl phenyl, LS-618, NCI-C50011, NSC 8082, NSC8082, Phenyl-.alpha.-hydroxybenzyl ketone, Phenyl-alpha-hydroxybenzyl ketone, Phenylbenzoyl carbinol, Resin benjamin, Resin benzoin, Siam benzoin, Styrax benzoin, Sumatra benzoin, WY-42956
Product Info: Benzoin is a highly toxic crystalline substance with formula of C6H5CH(OH)COC6H5, alpha-hydroxy aromatic ketone. It is a white to yellowish crystals; slightly soluble in water, soluble in acetone; melting at 137 C. It is prepared by the condensation of benzaldehyde in an alkaline cyanide solution. Benzoin and its derivatives are used as intermedaites for the synthesis of organic compounds and as catalysts in photopolymerization. They are used for anticratering in powder coatings.
Polymerization is initiated generally by free radical. There are four types of free radical initiators which initiate polymerization.
* Peroxides including hydroperoxides (tertiary-butyl hydroperoxide, benzoylperoxide)
* Azocompound thermal initiators (azoisobutyronitrile)
* Redoxinitiators (mixture of iron(III) acetylacetonate): free radicals are formed by one-electron transferreactions. Useful in low temperature and emulsion polymerization
* Photoinitiators (benzoin, benzil dimethylketal)
The main advantage of polymerization started by photoinitiators is temperature-independence and easy control. It can be conducted at very low temperatures and can be stopped simply by removing the light source. Photoinitiators are compounds that break down into free radicals upon exposure to ultraviolet radiation. Photoinitiators undergo a unimolecular bond cleavage upon irradiation to yield free radicals (benzoin esters; benzil ketals; alpha-dialkoxy acetophenones; alpha-hydroxy-alkylphenones; alpha-amino alkyl- phosphine; acylphosphine oxides). Another type of photoinitiators undergo a bimolecular reaction where the excited state of the photoinitiator interacts with a second molecule (a coinitiator) to generate free radicals(benzo phenones,amines; thioxanthones,amines; titanocenes). Photoinitiators are widely applied in UV curing inks, wood coatings, paper coatings, optical fiber, PCB, screen printing , paper varnish and other surface coatings.
MSDS http://msds.chem.ox.ac.uk/BE/benzoin.html
ASK FOR QUOTATIONGroups: All Chemicals
Information:
IUPAC Name: 2-hydroxy-1,2-diphenyl-ethanone
CAS Number: 119-53-9
Chemical Formula: C14H12O2
Synonyms: (+-)-Benzoin, (1)-2-Hydroxy-1,2-diphenylethan-1-one, .alpha.-Hydroxy-.alpha.-phenylacetophenone, 119-53-9, 2-Hydroxy-1, 2-diphenylethanone, 2-Hydroxy-1,2-diphenylethanone, 2-Hydroxy-2-phenylacetophenone, 4-08-00-01279 (Beilstein Handbook Reference), 579-44-2, 8050-35-9, 9000-05-9, 9000-73-1, 91845-21-5, Acetophenone, 2-hydroxy-2-phenyl-, AI3-00851, AIDS-017958, AIDS017958, alpha-Hydroxy-alpha-phenylacetophenone, alpha-Hydroxybenzyl phenyl ketone, Benjamin gum, Benzoin, Benzoin (VAN) (8CI), Benzoin absolute, Benzoin extract (resinoid), Benzoin gum, Benzoin gum, Sumatra, Benzoin Malasia, Benzoin resin, Benzoin resinoid, Benzoin resinoid, Siam, Benzoin Siam, Benzoin Sumatra, Benzoin tincture, Benzoin usp, Benzoylphenylcarbinol, Bitter almond oil camphor, Bitter-almond-oil camphor, BRN 0391839, C01408, CCRIS 6696, CCRIS 75, CHEBI:17682, DL-BENZOIN, EINECS 204-331-3, EINECS 209-441-5, EINECS 232-523-7, Ethanone, 2-hydroxy-1,2-diphenyl-, Ethanone, 2-hydroxy-1,2-diphenyl-, mixt. with aloe, storax and Tolu B
alsam, tincture, Ethanone, 2-hydroxy-1,2-diphenyl-, (.+/-.)-, FEMA No. 2132, FEMA No. 2133, Fenyl-alpha-hydroxybenzylketon [Czech], Gum Benjamin, GUM BENZOIN, Gum benzoin siam, Gum sumatra, HSDB 1929, HSDB 384, Hyperabsolute benzoin, Siam, Ketone, .alpha.-hydroxybenzyl phenyl, Ketone, alpha-hydroxybenzyl phenyl, LS-618, NCI-C50011, NSC 8082, NSC8082, Phenyl-.alpha.-hydroxybenzyl ketone, Phenyl-alpha-hydroxybenzyl ketone, Phenylbenzoyl carbinol, Resin benjamin, Resin benzoin, Siam benzoin, Styrax benzoin, Sumatra benzoin, WY-42956
Product Info: Benzoin is a highly toxic crystalline substance with formula of C6H5CH(OH)COC6H5, alpha-hydroxy aromatic ketone. It is a white to yellowish crystals; slightly soluble in water, soluble in acetone; melting at 137 C. It is prepared by the condensation of benzaldehyde in an alkaline cyanide solution. Benzoin and its derivatives are used as intermedaites for the synthesis of organic compounds and as catalysts in photopolymerization. They are used for anticratering in powder coatings.
Polymerization is initiated generally by free radical. There are four types of free radical initiators which initiate polymerization.
* Peroxides including hydroperoxides (tertiary-butyl hydroperoxide, benzoylperoxide)
* Azocompound thermal initiators (azoisobutyronitrile)
* Redoxinitiators (mixture of iron(III) acetylacetonate): free radicals are formed by one-electron transferreactions. Useful in low temperature and emulsion polymerization
* Photoinitiators (benzoin, benzil dimethylketal)
The main advantage of polymerization started by photoinitiators is temperature-independence and easy control. It can be conducted at very low temperatures and can be stopped simply by removing the light source. Photoinitiators are compounds that break down into free radicals upon exposure to ultraviolet radiation. Photoinitiators undergo a unimolecular bond cleavage upon irradiation to yield free radicals (benzoin esters; benzil ketals; alpha-dialkoxy acetophenones; alpha-hydroxy-alkylphenones; alpha-amino alkyl- phosphine; acylphosphine oxides). Another type of photoinitiators undergo a bimolecular reaction where the excited state of the photoinitiator interacts with a second molecule (a coinitiator) to generate free radicals(benzo phenones,amines; thioxanthones,amines; titanocenes). Photoinitiators are widely applied in UV curing inks, wood coatings, paper coatings, optical fiber, PCB, screen printing , paper varnish and other surface coatings.
MSDS http://msds.chem.ox.ac.uk/BE/benzoin.html
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