alpha-Ionone
Also known as: α-Ionone, 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, (3E)-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-one, (E)-alpha-Ionone, alpha-Cyclocitrylideneacetone, Ionone alpha, FEMA 2594, UNII I9V075M61R
alpha-Ionone (CAS 127-41-3) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C13H20O and a molecular weight of 192.297 g/mol. Key properties include a melting point of 59 - 61ºC, a boiling point of 257.6±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 104.4±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H334 — May cause allergy or asthma symptoms if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 127-41-3
- Jingsj CID
- J-1172103-5
- Molecular Formula
- C13H20O
- Molecular Weight
- 192.297 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 59 - 61ºC |
|---|---|
| Boiling Point | 257.6±0.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 104.4±0.0 °C |
| Exact Mass | 192.151413 |
| PSA | 17.07000 |
| LogP | 3.86 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.512 |
| Additional Property | insoluble |
GHS Safety & Compliance
- H334 — May cause allergy or asthma symptoms if inhaled
Customs & Trade Information
| HS Code | 2914230000 |
|---|---|
| Summary | 2914230000 (e)-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-one。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。Lowest tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of alpha-Ionone?
The CAS number of alpha-Ionone is 127-41-3.
What are the molecular formula and molecular weight of alpha-Ionone?
alpha-Ionone has molecular formula C13H20O and molecular weight 192.297 g/mol.
Is alpha-Ionone hazardous?
alpha-Ionone has GHS signal word Danger and hazard statements H334 — May cause allergy or asthma symptoms if inhaled.
What are the upstream and downstream products of alpha-Ionone?
For alpha-Ionone, Upstream Products: Pseudoionone, α-Ionol; Downstream Products: β-Cryptoxanthin, dihydro-alpha-ionone, Tetrahydroionol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "alpha-Ionone (CAS 127-41-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1172103-5 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.