Benzoin
CAS 119-53-9
EC 204-331-3
Formula C14H12O2
MW 212.24 g/mol
UV Absorbers & Stabilizers Printing & PackagingCoatings, Adhesives, Sealants & ElastomersFood & NutritionPlastics & PolymersPersonal Care & Cosmetics Polymerization InitiationUV Protection & StabilizationFlavoring & AcidulantAntioxidant & Stabilizer
Description
Benzoin (CAS 119-53-9, EC 204-331-3), also known as (±)-Benzoin, Desyl alcohol, or PhCH(OH)COPh, is an aromatic alpha-hydroxy ketone derived from the condensation of benzaldehyde. It carries no assigned E-code and is commercially referenced under designations such as AURORA KA-7034.
In UV-curable coatings and printing inks, benzoin acts as a Type I photoinitiator, fragmenting under UV exposure to generate reactive radicals that initiate polymer crosslinking. In food and fragrance applications, it contributes balsamic, sweet-spice notes, while in plastics processing it functions as a heat stabilizer by scavenging degradation byproducts during compounding.
Benzoin is supplied as a light yellow powder or crystalline solid and is available in food-grade quality meeting FCC specifications. It falls under REACH regulation (EC 204-331-3) and is classified under HS code 29144090. Buyers should confirm grade suitability against application-specific standards prior to procurement.
In UV-curable coatings and printing inks, benzoin acts as a Type I photoinitiator, fragmenting under UV exposure to generate reactive radicals that initiate polymer crosslinking. In food and fragrance applications, it contributes balsamic, sweet-spice notes, while in plastics processing it functions as a heat stabilizer by scavenging degradation byproducts during compounding.
Benzoin is supplied as a light yellow powder or crystalline solid and is available in food-grade quality meeting FCC specifications. It falls under REACH regulation (EC 204-331-3) and is classified under HS code 29144090. Buyers should confirm grade suitability against application-specific standards prior to procurement.
Physical Properties
| Melting Point | 137 °C |
| Boiling Point | 344 °C @ Press: 760.0 Torr |
| Density | 1.310 g/cm³ |
| Flash Point | 181 °C |
| Appearance | light yellow powder or crystals with a camphor-like odour |
| Color | Off-white to very slightly yellow |
| Odor | agreeable vanilla-like odor |
| Form | Powder |
| Water Solubility | Soluble in chlorine. Slightly soluble in water, ethanol and ether. |
| Vapor Pressure | 1.3 hPa (136 °C) |
| Log P | 1.84-2.13 at 25℃ |
Trade & Regulatory
| HS Code | 29144090 |
| WGK (Germany) | 2 |
Other Names
Benzoin (organic Compound)2-hydroxy-1,2-diphenylethanoneAerozoinPhCH(OH)COPh(+/-)-benzoinWy 42956(±)-BenzoinDesyl alcoholBenzoylphenylcarbinol
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