Coumarin
Also known as: 2H-1-benzopyran-2-one, 1,2-benzopyrone, cis-o-coumarinic acid lactone, coumarinic anhydride, chromen-2-one, cumarin, tonka bean camphor
Coumarin (CAS 91-64-5) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C9H6O2 and a molecular weight of 146.143 g/mol. Key properties include a melting point of 68-73 °C(lit.), a boiling point of 298.0±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 118.3±16.1 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 91-64-5
- Jingsj CID
- J-18801-2
- Molecular Formula
- C9H6O2
- Molecular Weight
- 146.143 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 68-73 °C(lit.) |
|---|---|
| Boiling Point | 298.0±0.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 118.3±16.1 °C |
| Exact Mass | 146.036774 |
| PSA | 30.21000 |
| LogP | 1.39 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.595 |
| Additional Property | 1.7 g/L (20 ºC) |
GHS Safety & Compliance
- H301 — Toxic if swallowed
Activity & Biological Data
| Additional Information | [1]. Liu M, et al. Quantitative analysis of nine coumarins in rat urine and bile after oral administration of Radix Glehniae extract by high-performance liquid chromatography-electrospray ionization tandem mass spectrometry. Biomed Chromatogr. 2011 Jul;25(7):783-93. |
|---|
Customs & Trade Information
| HS Code | 2932201000 |
|---|---|
| Summary | HS:2932201000 2h-chromen-2-one VAT:17.0% Tax rebate rate:13.0% Supervision conditions:none MFN tariff:6.5% General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Coumarin?
The CAS number of Coumarin is 91-64-5.
What are the molecular formula and molecular weight of Coumarin?
Coumarin has molecular formula C9H6O2 and molecular weight 146.143 g/mol.
Is Coumarin hazardous?
Coumarin has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.
What are the upstream and downstream products of Coumarin?
For Coumarin, Upstream Products: 4-Chloro-2H-chromen-2-one, 3,4-dibromo-3,4-dihydrochromen-2-one, Diethyl fumarate; Downstream Products: Benzofuran-2-carboxylic acid, 3-(2-Hydroxyphenyl)propionic acid, Chroman-6-carbaldehyde.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Coumarin (CAS 91-64-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18801-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.