Detail of "156-38-7"

CAS Number:
156-38-7
Name:
4-Hydroxyphenylacetic acid
Molecular Structure:
Formula:
C₈H₈O₃
Molecular Weight:
152.15
Synonyms:
Acetic acid, (p-hydroxyphenyl)-;4-HPA;2-(4-hydroxyphenyl)acetate;Para Hydroxy Phenyl Acetic;P-Hydroxyphenyl acetic acid;4-Hydroxy Phenyl Acetic Acid;4-Hydroxyphenylaceticacid;4-Hydroxyphenyl acetic acid;4-Carboxymethylphenol;benzeneacetic acid, 4-hydroxy-;4-10-00-00543 (Beilstein Handbook Reference);(p-Hydroxyphenyl)acetic acid;
EINECS:
205-851-3
Density:
1.319 g/cm³
Melting Point:
148-151 °C(lit.)
Boiling Point:
346.6 °C at 760 mmHg
Flash Point:
177.6 °C
Appearance:
white or light yellow crystalline powder
Hazard Symbols:
Xi
Risk Codes:
36/37/38
Safety:
26-36-24/25 Details
particular:
particular

Selective isomerization of phenoxyacetic acid after irradiation in comparison with the x-irradiation-induced decomposition in aqueous solution at 25: Selective isomerization of phenoxyacetic acid after irradiation in comparison with the x-irradiation-induced decomposition in aqueous solution at 25.degree.C. Ehrl, Albert (Inst. Biol., Ges. Strahlen- Umweltforsch., Neuherberg, Ger.). Atomkernenergie, 29(4), 293-9 (German) 1977. CODEN: ATKEAR. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemicals) Section cross-reference(s): 63 UV irradn. of 10-3M phenoxyacetic acid [122-59-8] yielded 2-hydroxyphenylacetic acid [614-75-5] and 4-hydroxyphenylacetic acid [156-38-7], by an intramol., selective, and irreversible process. X-ray irradn. of phenoxyacetic acid yielded phenol [108-95-2], hydroquinone [123-31-9], and pyrocatechol [120-80-9].

Interference by endogenous p-hydroxyphenylacetic acid with estimation of N-acetyl-p-aminophenol in urine by gas chromatography: Interference by endogenous p-hydroxyphenylacetic acid with estimation of N-acetyl-p-aminophenol in urine by gas chromatography. Kalra, J.; Mamer, O. A.; Gregory, B.; Gault, M. H. (Dep. Med., Mem. Univ., St. John's, Newfoundland, Can.). J. Pharm. Pharmacol., 29(2), 127-8 (English) 1977. CODEN: JPPMAB. DOCUMENT TYPE: Journal CA Section: 1 (Pharmacodynamics) Gas chromatog. of exts. of urine from healthy volunteers showed a peak with a retention time identical to N-acetyl-p-aminophenol (I) [103-90-2]; the peak was increased further 6 and 8 h after ingestion of 1 L of beer or 50mL ethanol in orange juice. The ext. was identified as p-hydroxphenylacetic acid (II) [156-38-7]. Anal. of the ext. with I yielded a larger peak having a mass spectrum of a mixt. of I and II.