Overview
Cinnamic acid (CAS 140-10-3 ) is a naturally occurring organic acid used across fragrance, cosmetic, pharmaceutical, and polymer applications. Known in trade as trans-cinnamate, it functions primarily as a UV absorber and flavoring acidulant.
In personal care and cosmetics, it serves as a key building block for cinnamate-based UV filters used in sunscreen formulations. Pharmaceutical manufacturers use it as a synthesis intermediate for active ingredients and as a pH modifier.
In flavors and fragrances, it contributes warm, balsamic notes to fine fragrance compounds, soap bases, and flavoring blends. Polymer and resin formulators incorporate it as a photosensitive crosslinking agent in UV-curable coatings.
This material is also utilized in photoresist systems for printing and packaging applications. Cinnamic acid is supplied as a white to off-white crystalline powder available in food-grade and technical-grade specifications.
The food-grade material conforms to FCC standards for use in flavoring applications. Pharmaceutical-grade material meeting USP or BP specifications is also commercially available for regulated manufacturing.
Our supply chain ensures consistent purity and particle size distribution for industrial use. We provide comprehensive documentation including certificates of analysis and safety data sheets for all commercial shipments.
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Physical Properties
| Melting Point | 133 °C |
| Boiling Point | 300 °C |
| Density | 1.248 |
| Flash Point | >230 °F |
| Appearance | White to almost white crystalline powder |
| Color | White to almost white |
| Odor | Faint odour |
| Form | Crystalline Powder |
| Water Solubility | 0.4 g/L (20 ºC) |
| Vapor Pressure | 1.3 hPa (128 °C) |
| Refractive Index | 1.5049 (estimate) |
| pH | 3-4 (0.4g/l, H2O, 20℃) |
| Log P | 2.130 |
Safety & Handling
Warning GHS07 Hazard Statements H315 Causes skin irritation H319 Causes serious eye irritation H335 May cause respiratory irritation Precautionary Statements P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29163900 |
| Storage Class | 13 - Non Combustible Solids |
| WGK (Germany) | 1 |
Other Names
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Chemical Properties
- CAS Number
- 140-10-3
- EC Number
- 205-398-1
- Mol. Weight
- 148.16
- HS Code
- 29163900
- Category
- Flavors & Fragrances