1-(chloromethyl)pyrrolidin-2-one

Also known as: 1-(Chloromethyl)-2-pyrrolidinone, 1-Chloromethyl-2-pyrrolidone, 1-Chloromethylpyrrolidin-2-one, 1-chloromethyl-pyrrolidone, 2-Pyrrolidinone, 1-(chloromethyl)-, N-(Chloromethyl)-2-pyrrolidinone, N-Chloromethyl-2-pyrrolidone, N-Chloromethyl-2-ketopyrrolidine, N-Chloromethylpyrrolidone, Chloromethylpyrrolidone, F0861-0039

1-(chloromethyl)pyrrolidin-2-one (CAS 31282-95-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H8ClNO and a molecular weight of 133.57600 g/mol. Key properties include a boiling point of 253.4ºC at 760 mmHg, a density of 1.228 g/cm3 and a flash point of 107ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 31282-95-8
Jingsj CID: J-1445097-6
Molecular Formula: C₅H₈ClNO
Molecular Weight: 133.57600 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	253.4ºC at 760 mmHg
Density	1.228 g/cm3
Flash Point	107ºC
Exact Mass	133.02900
PSA	20.31000
LogP	0.74300
Refractive Index	1.494

Customs & Trade Information

HS Code	2933790090
Summary	2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1-(chloromethyl)pyrrolidin-2-one?

The CAS number of 1-(chloromethyl)pyrrolidin-2-one is 31282-95-8.

What are the molecular formula and molecular weight of 1-(chloromethyl)pyrrolidin-2-one?

1-(chloromethyl)pyrrolidin-2-one has molecular formula C5H8ClNO and molecular weight 133.57600 g/mol.

What are the upstream and downstream products of 1-(chloromethyl)pyrrolidin-2-one?

For 1-(chloromethyl)pyrrolidin-2-one, Upstream Products: 2-Pyrrolidinone, 1-(Hydroxymethyl)-2-pyrrolidinone, 2,6-Dimethylpyridine; Downstream Products: 1-Methyl-2-pyrrolidinone, 5-Iodouracil, 2-(2-oxopyrrolidin-1-yl)acetonitrile.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1-(chloromethyl)pyrrolidin-2-one (CAS 31282-95-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1445097-6 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.