Benzoic acid,4-hydroxy-, ethyl ester

Benzoic acid,4-hydroxy-, ethyl ester 

EINECS:204-399-4

Molecular Formula:C9H10O3

CAS Registry Number:120-47-8

Molecular Weight:166.17

Appearance:white crystalline powder

Density:1.168 g/cm3

Melting Point:115-118℃

Boiling Point:297-298℃

Vapour:0.000759mmHg at 25°C

Refractive Index:1.538

Flash Point:120.3 °C

Water:Soluble in ethanol, ether and acetone, slightly soluble in water

Solubilities:Soluble in ethanol, ether and acetone, slightly soluble in water

Color/Form:SMALL, COLORLESS CRYSTALS OR WHITE POWDERCrystals from dilute alcohol

Stability:Stable. Combustible. Incompatible with strong oxidizing agents, strong bases.

HS Code:29182930

Storage temp:0-6°C

Methods of Manufacturing:Prepared by esterification of p-hydroxybenzoic acid.Parabens are prepared by esterifying PHBA /parahydroxybenzoic acid/ with the corresponding alcohol in the presence of an acid catalyst, such as sulfuric acid, and an excess of the specific alcohol. The acid is then neutralized with caustic soda, and the product is crystallized by cooling, centrifuged, washed, dried under vacuum, milled, and blended.