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2-Chloroethyl methanesulfonate

Also known as: 2-Chloroethyl methanesulfonate, Methanesulfonic acid 2-chloroethyl ester, 2-chloroethyl mesylate, 2-Chloroethyl methanesulphonate, Chloroethyl methanesulfonate, 2-Chlorethylmesylat, CB 1506, EINECS 222-672-6, MFCD00007560, Ethanol, 2-chloro-, methanesulfonate

2-Chloroethyl methanesulfonate (CAS 3570-58-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C3H7ClO3S and a molecular weight of 158.60400 g/mol. Key properties include a melting point of 6ºC, a boiling point of 125-126ºC9 mm Hg(lit.), a density of 1.39 g/mL at 25ºC(lit.) and a flash point of >110.0 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
3570-58-9
Jingsj CID
J-1418525-2
Molecular Formula
C3H7ClO3S
Molecular Weight
158.60400 g/mol
Category
Organic Acids
Last updated
11/3/2026
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Physicochemical Properties

Melting Point6ºC
Boiling Point125-126ºC9 mm Hg(lit.)
Density1.39 g/mL at 25ºC(lit.)
Flash Point>110.0 °C
Exact Mass157.98000
PSA51.75000
LogP1.28220
Refractive Indexn20/D 1.456(lit.)

GHS Safety & Compliance

Irritant / Health HazardSignal word: Warning
  • H302 — Harmful if swallowed
  • H312 — Harmful in contact with skin
  • H332 — Harmful if inhaled
  • H351 — Suspected of causing cancer

Frequently Asked Questions

What is the CAS number of 2-Chloroethyl methanesulfonate?

The CAS number of 2-Chloroethyl methanesulfonate is 3570-58-9.

What are the molecular formula and molecular weight of 2-Chloroethyl methanesulfonate?

2-Chloroethyl methanesulfonate has molecular formula C3H7ClO3S and molecular weight 158.60400 g/mol.

Is 2-Chloroethyl methanesulfonate hazardous?

2-Chloroethyl methanesulfonate has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H332 — Harmful if inhaled.

What are the upstream and downstream products of 2-Chloroethyl methanesulfonate?

For 2-Chloroethyl methanesulfonate, Upstream Products: Methanesulfonic acid, 1-Dodecyne, 1,2-dichloroethane; Downstream Products: 1-(2-chloroethoxy)-4-methoxybenzene, 1-Chloro-2-fluoroethane, 2-chloroethyl thiocyanate.

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

Last updated:

How to cite: Jingsj. "2-Chloroethyl methanesulfonate (CAS 3570-58-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1418525-2 (accessed 2026-11-09).

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