Watermelon ketone
Also known as: 7-methyl-3,4-dihydro-2H-1,5-benzodioxepin-3-one, Calone, Calone 1951, 7-methyl-2H-1,5-benzodioxepin-3(4H)-one, Methyl benzodioxepinone
Watermelon ketone (CAS 28940-11-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H10O3 and a molecular weight of 178.185 g/mol. Key properties include a boiling point of 305.2±41.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 129.3±14.0 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 28940-11-6
- Jingsj CID
- J-1972574-5
- Molecular Formula
- C10H10O3
- Molecular Weight
- 178.185 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 305.2±41.0 °C at 760 mmHg |
|---|---|
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 129.3±14.0 °C |
| Exact Mass | 178.062988 |
| PSA | 35.53000 |
| LogP | 1.20 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.538 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Activity & Biological Data
| Additional Information | [1]. Shaoqiang Xu. Synthesis method of watermelon ketone. CN 103058984 A. |
|---|
Customs & Trade Information
| HS Code | 2932999099 |
|---|---|
| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Watermelon ketone?
The CAS number of Watermelon ketone is 28940-11-6.
What are the molecular formula and molecular weight of Watermelon ketone?
Watermelon ketone has molecular formula C10H10O3 and molecular weight 178.185 g/mol.
Is Watermelon ketone hazardous?
Watermelon ketone has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of Watermelon ketone?
For Watermelon ketone, Upstream Products: 1,3-Dichloroacetone, 4-methylcatechol, 1,3-Dibromo-2-propanone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Watermelon ketone (CAS 28940-11-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1972574-5 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.