Preservative benzoin

Benzoic Add, USP. Benzoic acid and its esters occur naturally in gum benzoin and in Peru and tolu balsam.s. It is found as a white crystalline solid that slowly sublimes at room temperature and is steam distillable. It is slightly soluble in water (0.3%) but more. soluble in alcohol and in other polar organic. solvents. It has a pK of 4.2. Benzoic acid is used externally as an antiseptic in lotions, ointment.s. and mouthwashes. It is mure effective as a preservative in foods and pharmaceutical products at low pH (Ic.ss than the pK ). When used as a preservative in emulsions, its effectiveness depends on both pH and distribution into the two pha.scs. ... 

Benzoatlc fat 1516 A method of preserving animal fats with benzoin. 

In dye and perfume manufacture, and as a preservative of foods, etc. Also called flowers of benjamin or benzoin hydrate of benzoyl salt of benzoin. 

These are resinous mixtures that contain cinnamic and/or benzoic acid or their esters. Benzoin is a balsamic resin derived from the bark of Styrax benzoin (Styraceae) trees in Southeast Asia. Benzoin contains cinnamic, benzoic and triterpene acids. Its action is antiseptic, stimulant, expectorant, diuretic and antifungal. It is used as a food preservative and also as an ingredient in pharmaceutical preparations such as Whitfield s Ointment (with salicylic acid) for ringworm and athlete s foot (Tyler et al. 1988). 

Benzoin, especially Siam benzoin, has anti-oxidative and preservative properties and is used in cosmetics for these properties. The resinoid is extensively used as a fixative in perfumes, soaps, detergents, creams, and lotions, in amounts up to 0.8% in perfumes (arctander). ... 

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