Detail of > 99-96-7
- MSDS Download
- CAS Number:
- 99-96-7
- Name:
4-Hydroxybenzoic acid
- Formula:
- C7H6O3
- Molecular Structure:
- Synonyms:
- p-Oxybenzoesaure [German];Benzoic acid, p-hydroxy-;Benzoic acid, p-hydroxy;4-Carboxyphenol;Benzoic acid, 4-hydroxy-, monosodium salt;4-Hydroxybenzoate;Hydroxybenzenecarboxylic acid;4-Hydroxybenzoesaeure;Benzoic acid, 4-hydroxy-;Benzoic acid, 4-hydroxy;Acido p-idrossibenzoico [Italian];Potassium 4-hydroxybenzoate;Sodium 4-hydroxybenzoate;Hydroxybenzoic acid;p-salicylic acid;Kyselina 4-hydroxybenzoova [Czech];P-Hydroxybenzoic acid (PHBA);4-Hydroxy Benzoic Acid;p-hydroxybenzoic Acid;4-hydroxybenzoic acid;4-hydroxybenzenecarboxylic acid;Para Hydroxy Benzoic Acid[99-96-7];p-Hydroxy Benzoic Acid;
- Molecular Weight:
- 138.12 .
- EINECS:
- 202-804-9
- Density:
- 1.46 g/cm3
- Melting Point:
- 213-217 °C(lit.)
- Boiling Point:
- 336.2 °C at 760 mmHg
- Flash Point:
- 171.3 °C
- Solubility:
- Water solubility: 5 g/L (20 °C)
- Appearance:
- white to beige crystalline powder
- Hazard Symbols:
Xi- Risk Codes:
- 36-36/37/38
- Safety:
- 26-37/39-36Details
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Reference
- Changes in phenolic compounds in aerobic fermentation of wines with a sherry yeast culture
- Changes in phenolic compounds in aerobic fermentation of wines with a sherry yeast culture. Maksimov, S. Yu. (Inst. Mikrobiol. Virusol., Alma-Ata, USSR). Izv. Akad. Nauk Kaz. SSR, Ser. Biol., (3), 39-43 (Russian) 1985. CODEN: IKABAR. ISSN: 0002-3183. DOCUMENT TYPE: Journal CA Section: 16 (Fermentation and Bioindustrial Chemistry) The wine material used for sherry prodn. was found to contain free caffeic acid [331-39-5], protocatechuic acid [99-50-3], and p-hydroxybenzoic acid [99-96-7]. At the end of aerobic fermn. with sherry yeast (Saccharomyces oviformis), 2 more acids were formed: gallic acid [149-91-7] and p-coumaric acid [7400-08-0]. The concns. of anthogyamins and leucoanthocyanins were markedly lowered. The total quantity of phenols was only slightly reduced.
- The fate of parabens in a contaminated surfactant product
- The fate of parabens in a contaminated surfactant product. Scott, Richard A.; Jungermann, Eric (Neutrogena Corp., Los Angeles, CA, USA). Soap, Cosmet., Chem. Spec., 61(1), 24-6, 87 (English) 1985. CODEN: SCCSC8. ISSN: 0091-1372. DOCUMENT TYPE: Journal CA Section: 62 (Essential Oils and Cosmetics) Section cross-reference(s): 10 A wild Pseudomonas aeruginosa isolated from a surfactant contg. 0.3% methylparaben [99-76-3] and 0.2% propylparaben [94-13-3] was able to grow on cultures contg. the preservatives. The original contaminated product contained small amts. of 2 compds. with chromatog. retention times similar to those of Me [24262-66-6] and Pr 4-acetoxybenzoate [27739-13-5]. The wild organism was able to grow on 4-hydroxybenzoic acid [99-96-7] and the 4-acetoxybenzoates, but could not grow on ortho and meta hydroxybenzoates and derivs. In the surfactant samples, the organism reduced paraben concn. by ~30% in 28 days. All the compds. tested, except 4-acetoxybenzoic acid [2345-34-8] and its Me ester, were effective preservatives in the presence of the std. USP or ATCC culture of P. aeruginosa used in challenge testing.
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