2-Allyl-2-methyl-1,3-cyclopentanedione
2-烯丙基-2-甲基-1,3-环戊二酮
Also known as: 1,3-Cyclopentanedione, 2-methyl-2-(2-propen-1-yl)-, 2-allyl-2-methylcyclopentane-1,3-dione, 2-methyl-2-prop-2-enylcyclopentane-1,3-dione, NSC 380474
2-Allyl-2-methyl-1,3-cyclopentanedione (CAS 26828-48-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H12O2 and a molecular weight of 152.19000 g/mol. It is also known as 1,3-Cyclopentanedione, 2-methyl-2-(2-propen-1-yl)-, 2-allyl-2-methylcyclopentane-1,3-dione and 2-methyl-2-prop-2-enylcyclopentane-1,3-dione. Key properties include a boiling point of 228.4ºC at 760mmHg, a density of 1.019g/cm3 and a flash point of 95.6ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 26828-48-8
- Jingsj CID
- J-30883-2
- Molecular Formula
- C9H12O2
- Chinese Name
- 2-烯丙基-2-甲基-1,3-环戊二酮
- Molecular Weight
- 152.19000 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 228.4ºC at 760mmHg |
|---|---|
| Density | 1.019g/cm3 |
| Flash Point | 95.6ºC |
| Exact Mass | 152.08400 |
| PSA | 34.14000 |
| LogP | 1.50080 |
| Vapor Pressure | 0.0736mmHg at 25°C |
| Refractive Index | n20/D 1.477(lit.) |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2914299000 |
|---|---|
| Summary | 2914299000. other cyclanic, cyclenic or cyclotherpenic ketones without other oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2-Allyl-2-methyl-1,3-cyclopentanedione?
The CAS number of 2-Allyl-2-methyl-1,3-cyclopentanedione is 26828-48-8.
What are the molecular formula and molecular weight of 2-Allyl-2-methyl-1,3-cyclopentanedione?
2-Allyl-2-methyl-1,3-cyclopentanedione has molecular formula C9H12O2 and molecular weight 152.19000 g/mol.
Is 2-Allyl-2-methyl-1,3-cyclopentanedione hazardous?
2-Allyl-2-methyl-1,3-cyclopentanedione has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 2-Allyl-2-methyl-1,3-cyclopentanedione?
For 2-Allyl-2-methyl-1,3-cyclopentanedione, Upstream Products: 2-Methyl-1,3-cyclopentanedione, Allyl acetate, Allyl bromide.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Allyl-2-methyl-1,3-cyclopentanedione (CAS 26828-48-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30883-2 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.