trans-Caffeic acid
反式咖啡酸
Also known as: trans-3,4-Dihydroxycinnamic acid, (E)-3-(3,4-dihydroxyphenyl)prop-2-enoic acid, 3,4-Dihydroxy-trans-cinnamate, 3-(3,4-Dihydroxyphenyl)acrylic acid, Caffeic acid (trans)
trans-Caffeic acid (CAS 501-16-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H8O4 and a molecular weight of 180.157 g/mol. It is also known as trans-3,4-Dihydroxycinnamic acid, (E)-3-(3,4-dihydroxyphenyl)prop-2-enoic acid and 3,4-Dihydroxy-trans-cinnamate. Key properties include a melting point of 211-213ºC (dec.)(lit.), a boiling point of 416.8±35.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 220.0±22.4 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 501-16-6
- Jingsj CID
- J-1958336-5
- Molecular Formula
- C9H8O4
- Chinese Name
- 反式咖啡酸
- Molecular Weight
- 180.157 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 211-213ºC (dec.)(lit.) |
|---|---|
| Boiling Point | 416.8±35.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 220.0±22.4 °C |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of trans-Caffeic acid?
The CAS number of trans-Caffeic acid is 501-16-6.
What are the molecular formula and molecular weight of trans-Caffeic acid?
trans-Caffeic acid has molecular formula C9H8O4 and molecular weight 180.157 g/mol.
Is trans-Caffeic acid hazardous?
trans-Caffeic acid has GHS signal word Warning.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "trans-Caffeic acid (CAS 501-16-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1958336-5 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.