尼泊金乙酯
中文同义词: 对羟基苯甲酸乙酯;对羟基苯甲酸乙酯(尼泊金乙酯);尼泊金A;尼泊金乙酯;尼泊金,A4-羟基苯甲酸乙酯;4-羟基苯甲酸乙酯;对羟基安息香酸乙酯;苯乙酯
化学性质 白色结晶或结晶性粉末,有特殊香味。 易溶于乙醇、乙醚和丙酮,微溶于水、氯仿、二硫化碳和石油醚。
用途 用作食品防腐剂,也用于制药、皮革等行业
用途 对羟基苯甲酸酯类对霉菌和酵母菌的抑制作用较强,对细菌特别是对乳酸菌及革兰阴性杆菌的作用较差,但抗菌能力比山梨酸和苯甲酸强,且抗菌作用受PH影响不大,在PH4-8的范围内效果均好。对羟基苯甲酸酯类烷基越长抗菌作用越强,依次为丁酯>丙酯>乙酯。对羟基苯甲酸酯类是世界各国普遍使用的防腐剂之一。我国规定用于糕点馅,最大使用量0.5g/kg(以对羟基苯甲酸计,下同);在果汁(味)型饮料、果酱(不包括罐头)、酱油、酱料中最大使用量0.25g/kg;在碳酸饮料、蛋黄馅中最大使用量0.2g/kg;在食醋中最大实用量0.1g/kg;在果蔬保鲜中最大使用量0.012g/kg。
用途 对羟基苯甲酸酯类对霉菌和酵母菌的抑制作用较强,对细菌特别是对乳酸菌及革兰氏阴性杆菌的作用较差,但抗菌能力比山梨酸和苯甲酸强,且抗菌作用受pH值影响不大,在pH值4~8的范围内效果均好。对羟基苯甲酸酯类烷基越长抗菌作用越强,依次为丁酯>丙酯>乙酯。对羟基苯甲酸酯类是世界各国普遍使用的防腐剂之一。我国规定用于糕点馅,最大使用量0.5g/kg(以对羟基苯甲酸计,下同);在果汁(味)型饮料、果酱(不包括罐头)、酱油、酱料中最大使用量0.25g/kg;在碳酸饮料、蛋黄馅中最大使用量0.2g/kg;在食醋中最大使用量0.1g/kg;在果蔬保鲜中最大使用量0.012g/kg。
用途 防腐剂。各国多使用其乙酯及丙酯,但日本常使其丁酯。因其难溶于水,故常将各酯类合用。
用途 有机中间体。用作防腐剂、抑菌剂,用于食品、化妆品、医药品。还可用作有机分析试剂。该品对霉菌、酵母与细菌有广泛的抗菌作用,对霉菌与酵母的作用较强,但对细菌特别是对革兰氏阴性杆菌及乳酸菌的作用较差。是食品和医药的高效防腐杀菌剂。
Ethylparaben
Synonym: 4-Carbethoxyphenol;4-hydroxy-benzoicaciethylester;Aseptin a;Aseptine a;Aseptoform E;aseptoforme;Benzoic acid, 4-hydroxy-, ethyl ester;Benzoic acid, p-hydroxy-, ethyl ester
CAS: 120-47-8
MF: C9H10O3
MW: 166.17
EINECS: 204-399-4
Assay: 99%
Specification: CP
Appearance: white crystal powder
Chemical Property: Special aroma. Soluble in ethanol, ether and acetone, slightly soluble in water, chloroform, carbon disulfide and petroleum ether.
Usage:
1. Strong inhibition of p-hydroxybenzoic acid esters of molds and yeasts, bacteria especially for lactic acid bacteria and gram negative bacteria effect is poor, but the antibacterial ability than sorbic acid and benzoic acid is strong, and the antibacterial effect is not affected by PH, in the range of PH4-8 effect is good.
2. Strong inhibition of p-hydroxybenzoic acid esters of yeasts and molds, bacteria especially poor effect of lactic acid bacteria and gram negative bacilli, but antibacterial ability than sorbic acid and benzoic acid is strong, and the antibacterial effect is affected by the pH value is small, the pH value of 4 ~ 8 range effect is good.
3. Preservative. Many countries use the ethyl and propyl, but the Japanese often make the butyl. Because it is difficult to dissolve in water, so often the esters with.
4. Organic intermediates. Used as an antiseptic, antibacterial agent, used in the food, cosmetic, pharmaceutical products. Also can be used as organic analytical reagents. The product of the mold, yeast and bacteria have a wide range of antibacterial action, the mould and yeast is stronger, but bacteria especially poor effect on Gram negative bacteria and lactic acid bacteria. Is efficient and antiseptic in food and medicine.
Package: 25kg/drum
Price: USD 8/kg
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