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Cinnamic acid

CAS Number
140-10-3
EC Number
205-398-1
Chemical Formula
C9H8O2
Molecular Weight
148.16 g/mol
Industries:Printing & PackagingPlastics & PolymersPharmaceuticals & HealthcarePersonal Care & Cosmetics

Description

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. Contact us for supply of Cinnamic acid Request Quote

Other Names (Synonyms)

trans-Cinnamate | trans-beta-carboxystyrene | trans-b-Carboxystyrene | trans-3-phenylacrylic acid | trans-3-Phenylacrylate | trans-3-Phenyl-2-propenoic acid | trans-3-Phenyl-2-propenoate | Phenylacrylic acid

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point133 °C
Boiling Point300 °C
Density1.248
Flash Point>230 °F
AppearanceWhite to almost white crystalline powder
ColorWhite to almost white
OdorFaint odour
FormCrystalline Powder
Water Solubility0.4 g/L (20 ºC)
Vapor Pressure1.3 hPa (128 °C)
Refractive Index1.5049 (estimate)
pH3-4 (0.4g/l, H2O, 20℃)
Log P2.130

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29163900
Storage Class13 - Non Combustible Solids
WGK (Germany)1