Molekula
Cinnamic acid
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Cinnamic acid is an organic compound featuring a phenyl ring attached to a propenoic acid chain, widely used in perfumery, pharmaceuticals, and as a food flavoring agent. It also serves as a precursor in polymer synthesis and UV absorbers. This white crystalline powder has a CAS number of 140-10-3, with the molecular formula C9H8O2 and a molecular weight of 148.16 g/mol. It is stable at ambient storage conditions but requires careful handling, as indicated by its **Warning** signal word for potential skin/eye irritation. Molekula supplies Cinnamic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 kg — £46.50 per pack ex VAT · £55.80 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White powder |
| Melting Point | 130 - 134 °C |
| Heavy metals | ≤ 10ppm |
| Identification | Conforms to reference |
| Residue on Ignition | ≤ 0.1% |
| Solubility in alcohol | 1g in 7ml 95% alcohol |
| Arsenic (As) | ≤ 3ppm |
| Assay (dried basis) | ≥ 99% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 100 °C |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 133 °C |
| Boiling Point | 298 to 300 °C at 760 mmHg |
| Solubility (other solvents) | Insoluble in water; soluble in oils |
| pKa | pKa = 4.45 |
Source: PubChem CID 444539 (Human Metabolome Database (HMDB), Joint FAO/WHO Expert Committee on Food Additives (JECFA), ChEMBL)
Identification
| Property | Value |
|---|---|
| SKU | 26205513 |
| CAS Number | 140-10-3 |
| IUPAC Name | (E)-3-phenylprop-2-enoic acid |
| EC Number | 205-398-1 |
| Molecular Formula | C6H5CH=CHCOOH |
| Molecular Weight | 148.16 |
| Exact Mass | 148.0524 |
| SMILES | C1=CC=C(C=C1)/C=C/C(=O)O |
| InChIKey | WBYWAXJHAXSJNI-VOTSOKGWSA-N |
| InChI | InChI=1S/C9H8O2/c10-9(11)7-6-8-4-2-1-3-5-8/h1-7H,(H,10,11)/b7-6+ |
| PubChem CID | 444539 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2916390600 |
| Tariff Code | 2916399090 |
Safety & GHS
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Health Hazard
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
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- (E)-3-phenylprop-2-enoic acid
- 3-Phenylacrylic acid
- 3-phenylprop-2-enoic acid
- 3-Phenylpropenoic acid
- Benzenepropenoic acid
- beta-Phenylacrylic acid
- Cinnamic acid, (E)-
- Cinnamylic acid
- Phenylacrylic acid
- Zimtsaeure
Frequently asked questions
What is cinnamic acid commonly used for?
Cinnamic acid is widely used in the synthesis of pharmaceuticals, perfumes, and flavorings, as well as in polymer chemistry and as a UV filter in sunscreens.
What is the chemical formula and molecular weight of cinnamic acid?
The chemical formula is **C₉H₈O₂ (C₆H₅CH=CHCOOH)** and the molecular weight is **148.16 g/mol**.
How should cinnamic acid be stored?
Store cinnamic acid at **ambient temperature** in a cool, dry place, away from direct sunlight and incompatible substances.
What grades of cinnamic acid does Molekula supply?
Molekula supplies **pharmaceutical-grade and industrial-grade cinnamic acid**, with purity levels specified upon inquiry.
Can Molekula supply cinnamic acid in bulk quantities?
Yes, Molekula can supply cinnamic acid in **bulk quantities**, with flexible packaging options (drums, bags, or custom solutions).
What documentation comes with an order of cinnamic acid?
Each order includes a **Certificate of Analysis (CoA), Safety Data Sheet (SDS), and a Material Safety Information (MSI) document** for compliance and safety.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.