Ethyl 4-hydroxybenzoate sodium salt

Synonyms E215 ethyl 4-hydroxybenzoate sodium salt sodium ethyl hydroxybenzoate. 

Hydroxybenzoic acid, ethyl ester, sodium salt. 

Synonyms Ethylparaben, sodium salt 4-Hydroxybenzoic acid, ethyl ester, sodium salt Sodium 4-ethoxycarbonylphenoxide Sodium ethyl 4-hydroxybenzoate Sodium ethyl p-hyd roxy benzoate... 

The sodium salt of ethyl p-hydroxybenzoate reacts with tetrafluoroethylene in tetrahydrofuran and benzene at 180—185 °C to give a low yield (15.5%) of vinyl ether CF2 CF OR (R—p-EtOjC CgHj), together with the saturated... 

Applications. In many countries the methyl, ethyl and n-propyl esters of p-hydroxybenzoic acid, as well as their sodium salts, are permitted for preservation of some foods. The maximum permissible quantity is around 0.1%. In the USA methyl- and propyl-paraben are considered GRAS. The maximum permissible quantity is 0.1%. Their main field of use is not food preservation but the preservation of pharmaceutical and cosmetic fat emulsions. The usage of the butyl ester is not allowed in food applications. 

This group of chemicals, which are found naturally in many fruits, are used as preservatives, a function that they also perform within fruit. Benzoic acid itself may be used, or more commonly sodium benzoate (a salt) or ethyl or methyl para-hydroxybenzoate, also known as parabens. They have sometimes associated with adverse effects. Anaphylaxis-like reactions have been reported as well as urticaria. About 4 per cent of people who suffer from asthma may experience breathlessness and wheezing when exposed to benzoates. Parabens are often used as preservatives cosmetics. 

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