1-Chloro-2-butene
Also known as: Crotyl chloride, Crotyl chloride (cis- and trans- mixture), 2-Butenyl chloride, 1-Chlorobut-2-ene, cis,trans-1-Chloro-2-butene, (E/Z)-crotyl chloride, 2-Butene, 1-chloro-
1-Chloro-2-butene (CAS 591-97-9) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H7Cl and a molecular weight of 90.551 g/mol. Key properties include a melting point of -65°C, a boiling point of 84.5±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of -15.0±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 591-97-9
- Jingsj CID
- J-1359393-6
- Molecular Formula
- C4H7Cl
- Molecular Weight
- 90.551 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -65°C |
|---|---|
| Boiling Point | 84.5±0.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | -15.0±0.0 °C |
| Exact Mass | 90.023628 |
| LogP | 2.17 |
| Vapor Pressure | 80.6±0.1 mmHg at 25°C |
| Refractive Index | 1.426 |
| Stability | Stable. Highly flammable. Incompatible with strong oxidizing agents. |
Customs & Trade Information
| HS Code | 2903299090 |
|---|---|
| Summary | 2903299090 other unsaturated chlorinated derivatives of acyclic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 1-Chloro-2-butene?
The CAS number of 1-Chloro-2-butene is 591-97-9.
What are the molecular formula and molecular weight of 1-Chloro-2-butene?
1-Chloro-2-butene has molecular formula C4H7Cl and molecular weight 90.551 g/mol.
What are the upstream and downstream products of 1-Chloro-2-butene?
For 1-Chloro-2-butene, Upstream Products: Crotyl alcohol, 3-Buten-2-ol, 3-Chloro-1-butene; Downstream Products: N-Butylmethyldichlorosilane, Triphenyltin chloride, 3-Buten-2-ol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Chloro-2-butene (CAS 591-97-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1359393-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.