Molekula
4-Hydroxycinnamic acid
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
4-Hydroxycinnamic acid is an organic compound belonging to the hydroxycinnamic acid family, widely used in pharmaceuticals, food preservation, and as a precursor in the synthesis of various bioactive compounds, including antioxidants and UV filters. It appears as a white to pale yellow crystalline powder, soluble in organic solvents. This chemical has a CAS number of 501-98-4, a molecular formula of HOC6H4CH=CHCO2H, and a molecular weight of 164.16. It should be stored at ambient conditions and handled with caution, as indicated by its "Warning" signal word.
Molekula supplies 4-Hydroxycinnamic acid in 25 g and 100 g packs, from £60.00 inc. VAT. It is made or sourced to order. Every batch ships with a certificate of analysis, and safety data sheets are available in 5 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 3 December 2026
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.
-
25 g — £50.00 per pack ex VAT · £60.00 inc. VAT
-
100 g — £98.20 per pack ex VAT · £117.84 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 | Pale yellow/ beige powder |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 211.5 °C |
Source: PubChem CID 637542 (Human Metabolome Database (HMDB))
Identification
| Property | Value |
|---|---|
| SKU | 86815064 |
| CAS Number | 501-98-4 |
| IUPAC Name | (E)-3-(4-hydroxyphenyl)prop-2-enoic acid |
| EC Number | 231-000-0 |
| Molecular Formula | HOC6H4CH=CHCO2H |
| Molecular Weight | 164.16 |
| Exact Mass | 164.0473 |
| SMILES | C1=CC(=CC=C1/C=C/C(=O)O)O |
| InChIKey | NGSWKAQJJWESNS-ZZXKWVIFSA-N |
| InChI | InChI=1S/C9H8O3/c10-8-4-1-7(2-5-8)3-6-9(11)12/h1-6,10H,(H,11,12)/b6-3+ |
| PubChem CID | 637542 |
| REACH Code | Y113 |
| HTS Code | 29182965 |
| Tariff Code | 2918290090 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H303 May be harmful if swallowed
- 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
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P333+313 IF skin irritation or a rash occurs: Get medical advice/attention
- P337+313 If eye irritation persists get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- (E)-p-Coumaric acid
- (E)-p-Hydroxycinnamic acid
- Hydroxycinnamic acid
- Naringeninic acid
- p-coumaric acid
- Para-Coumaric acid
- trans-4-coumaric acid
- trans-p-Coumaric acid
- trans-p-Coumarinic acid
- trans-p-Hydroxycinnamic acid
Frequently asked questions
What is 4-hydroxycinnamic acid commonly used for?
4-Hydroxycinnamic acid is primarily used as a precursor in the synthesis of pharmaceuticals, food preservatives, and as a UV filter in sunscreens. It’s also studied for its antioxidant properties in research applications.
What is the chemical formula and molecular weight of 4-hydroxycinnamic acid?
The chemical formula is HOC₆H₄CH=CHCO₂H, and the molecular weight is 164.16 g/mol.
What safety classification does 4-hydroxycinnamic acid have?
The product carries a Signal Word: Warning under GHS classification, indicating moderate hazard. Full SDS is provided with orders for detailed safety information.
How should 4-hydroxycinnamic acid be stored?
Store at ambient temperature in a tightly sealed container, protected from light and moisture to maintain stability.
Does Molekula offer 4-hydroxycinnamic acid in bulk quantities?
Yes, we supply bulk quantities (minimum order quantities vary by grade; contact us for pricing and availability).
What documentation comes with an order of 4-hydroxycinnamic acid?
Each order includes a Certificate of Analysis (CoA), Safety Data Sheet (SDS), and a Material Safety Information (MSI) sheet for compliance and handling guidance.
Where can I buy 4-Hydroxycinnamic acid?
Directly from Molekula, which lists 4-Hydroxycinnamic acid in 25 g and 100 g packs from £60.00 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
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.