Hydrocinnamic Acid (3‑Phenylpropionic Acid)
Fragrance & pharma intermediate • organic • CAS 501‑52‑0
Formula / MW
C₉H₁₀O₂ • 150.17 g/mol
Appearance
white to off‑white crystals
Melting point
~47–49 °C (rep.)
Odor
faint, sweet‑balsamic
Solubility
low in H₂O; soluble in EtOH/EtOAc
Synonyms: **3‑phenylpropionic acid**, **benzenepropanoic acid**,
**β‑phenylpropionic acid**. Common intermediate for fragrance
esters (e.g., hydrocinnamates), APIs, and specialty monomers.
| Parameter | Typical | Spec |
|---|---|---|
| Assay (GC/HPLC) | ≥ 99.5% | ≥ 99.0% |
| Water (Karl Fischer) | ≤ 0.10% | ≤ 0.20% |
| Color (APHA) | ≤ 30 | ≤ 50 |
| Acid equivalent | monobasic | — |
| Heavy metals (as Pb) | ≤ 10 ppm | ≤ 20 ppm |
| Residue on ignition | ≤ 0.10% | ≤ 0.20% |
| Parameter | Typical | Spec |
|---|---|---|
| Assay (GC/HPLC) | ≥ 99.0% | ≥ 98.5% |
| Water | ≤ 0.20% | ≤ 0.30% |
| Color (APHA) | ≤ 50 | ≤ 80 |
| Heavy metals (total) | ≤ 20 ppm | ≤ 50 ppm |
| Use cases | general synthesis | — |
| Property | Typical | Notes |
|---|---|---|
| Formula | C₉H₁₀O₂ | — |
| Molecular weight | 150.17 g/mol | — |
| Melting point | ~47–49 °C | representative |
| Boiling point | ~280–285 °C | approx., at 101 kPa |
| Density (20 °C) | ~1.06 g/cm³ | rep. |
| Refractive index | — | solid |
| Solubility | low in water; soluble in ethanol/ethyl acetate | — |
| Odor | faint sweet‑balsamic | — |
| Item | Status | Notes |
|---|---|---|
| DG classification | Typically non‑DG solid | confirm per route/forwarder |
| Handling | avoid dust; standard organics | use ventilation / dust control |
| PPE | gloves, goggles, coat | see SDS |
| Hazards | irritant | avoid inhalation/skin contact |
| Compliance | phthalate‑free | not for food/medical unless specified |
Always consult the latest SDS. Regulatory acceptance depends on the article and jurisdiction; verify suitability for your use during qualification.
| Applications | Packaging | Storage & Handling |
|---|---|---|
|
• Intermediate for fragrance esters (hydrocinnamates).
• Pharma & fine‑chemistry intermediate. • Specialty monomers/additives and R&D synthesis. |
• 25 kg fiber drums (inner liner).
• 1–5 kg bottles for R&D. • Custom bulk on request. |
• Store cool, dry, ventilated; keep sealed.
• Protect from moisture and heat. • Track assay, color, water, and metals per lot COA. |
Specs are representative; shipped material conforms to the lot
COA. Share your **purity target**, **color limit**, and **residual
metals** budget so we can match the correct grade.