CAS Number:17199‑29‑0
Synonyms: S‑(+)-Mandelic acid; (S)-α-Hydroxyphenylacetic acid; Phenylglycolic acid (optically active)
Chemical Formula:C₈H₈O₃
Molecular Weight:152.15 g/mol (C₈H₈O₃ monomer mass)
Product Introduction
A white crystalline, optically active form of mandelic acid, S‑(+)-mandelic acid is an aromatic α-hydroxy acid. It’s commonly used in pharmaceuticals as a chiral building block, in resolution/disinfection applications (e.g., UTI treatment), and in cosmetics for gentle exfoliation and skin brightening
| Property | Value |
|---|---|
| Appearance | White crystalline powder |
| Specific Rotation | [α]₂₀ᴅ = +?° (typically +18–22° in ethanol/H₂O) — check COA |
| Melting Point | ~119 °C (optically pure: ~132 °C) |
| Boiling Point | ~321.8 °C |
| Density | ~1.30 g/cm³ |
| Solubility (25 °C) | ~15.9 g/100 mL water; soluble in ethanol, diethyl ether, isopropanol |
| pKₐ | ~3.41 |
| Refractive Index (n₂₀ᴅ) | ~1.5204 |
| Flash Point | ~162.6 °C |