Determination of the alkyl esters of p-hydroxybenzoic acid in mayonnaise by high-performance liquid chromatography and fluorescence labelling [J]. Journal of Chromatography, 1994, A664: 213-219.Determination of the alkyl esters of p-hydroxybenzoic acid in mayonnaise by high-performance liquid ...
The alkyl esters of p-hydroxybenzoic acid (parabens) are commonly used as preservatives in cosmetics, food products and pharmaceutical formulations because of their wide range antimicrobial activity. However, the usage of parabens in aqueous media has been hampered, especially parabens with long alkyl...
Acute and chronic toxicity in dogs, rats, and mice ]]>The results of a study of the acute and chronic toxicity of p-hydroxybenzoic acid and the methyl, ethyl, propyl, and butyl esters in mice, rats, and dogs are presented. All of these compounds possess a low order of acute toxicity....
Parabens are alkyl esters of p-hydroxybenzoic acid widely used as preservatives in foodstuffs, cosmetics toiletries and pharmaceuticals. These compounds are known to exert a weak estrogenic activity in estrogen receptor assays in vitro. In addition butyl and propyl parabens show uterotrophic activity in...
1353301 N-alkylcarbamates of p-hydroxybenzoic acid esters TENNECO CHEMICALS Inc 24 Jan 1972 [18 Feb 1971] 3263/72 Heading C2C [Also in Division C4] The invention comprises compounds of general formula wherein R<SP>1</SP> is H or a C 1 -C 5 alkyl group, R<SP>11</SP> is a C ...
parahematin para hydrogen parahydroxybenzaldehy para hydroxybenzoic a para hydroxy benzoic para hydroxy benzonic para isomer paralbumin paraldehyde paraldol parallel-plate discha parallel chain parallel competing re parallel computation parallel computing parallel determinatio parallelehedra parallel evolution ...
High quality p-Hydroxybenzoic Acid Cas No: 99-96-7 No Data 10 Gram 500 Kilogram/Month Zibo Hangyu Biotechnology Development Co., Ltd Contact Supplier High purity Various Specifications 4-Hydroxybenzoic acid CAS:99-96-7 Cas No: 99-96-7 USD $ 100.0-500.0 / Gram 1 Gram 99999 Gram/Year Hang...
4-Hydroxybenzoic acid Min.Order:1 Metric Ton FOB Price:USD $ 1.5-1.5 ProName: 4-Hydroxybenzoic acid 99-96-7 /manufac... CasNo: 99-96-7 Molecular Formula: C7H6O3 Appearance: white crystal powder Application: It is an important raw material and in... DeliveryTime: prompt PackAge: accord...
Direct esterification of a hydroxyl functional polyester resin with p-hydroxybenzoic acid (PHBA) was carried out at 200–230°C in the presence of p-toluen... SG Boyes,RP Chaplin,TP Davis,... - 《Progress in Organic Coatings》 被引量: 1发表: 2000年 A Simple One-Stage Method for the ...
Vectran® is a completely aromatic-based polyester with melted crystalline liquid features, obtained by condensation of 4-hydroxybenzoic acid with 6-hydroxy-2-carboxy naphthalene acid, produced by Kuraray and Celanese. Vectran® Pulp is a material obtained by fibrillation of Vectran® fibres, for...