Chloromethyl chlorosulfate

Also known as: Chloromethyl chlorosulphate, Chlorosulfuric acid chloromethyl ester, Chloromethyl chlorosulfonate, Chloridosulfuric acid chloromethyl ester, Chloro chloromethyl sulfate

Chloromethyl chlorosulfate (CAS 49715-04-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula CH2Cl2O3S and a molecular weight of 164.996 g/mol. Key properties include a boiling point of 192.6±23.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 70.3±22.6 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H314 — Causes severe skin burns and eye damage and H330 — Fatal if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 49715-04-0
Jingsj CID: J-34294-9
Molecular Formula: CH₂Cl₂O₃S
Molecular Weight: 164.996 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	192.6±23.0 °C at 760 mmHg
Density	1.7±0.1 g/cm3
Flash Point	70.3±22.6 °C
Exact Mass	163.910172
PSA	51.75000
LogP	0.92
Vapor Pressure	0.7±0.4 mmHg at 25°C
Refractive Index	1.477
Additional Property	reacts

GHS Safety & Compliance

Corrosion / Acute Toxicity / Health HazardSignal word: Danger

H302 — Harmful if swallowed
H314 — Causes severe skin burns and eye damage
H330 — Fatal if inhaled
H350 — May cause cancer

Frequently Asked Questions

What is the CAS number of Chloromethyl chlorosulfate?

The CAS number of Chloromethyl chlorosulfate is 49715-04-0.

What are the molecular formula and molecular weight of Chloromethyl chlorosulfate?

Chloromethyl chlorosulfate has molecular formula CH2Cl2O3S and molecular weight 164.996 g/mol.

Is Chloromethyl chlorosulfate hazardous?

Chloromethyl chlorosulfate has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H314 — Causes severe skin burns and eye damage; H330 — Fatal if inhaled.

What are the upstream and downstream products of Chloromethyl chlorosulfate?

For Chloromethyl chlorosulfate, Upstream Products: Formaldehyde, Dichloromethane, Chloroiodomethane; Downstream Products: Chloromethyl butyrate, tert-Butyl (chloromethyl) succinate, Methylene bis(chlorosulfate).

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. "Chloromethyl chlorosulfate (CAS 49715-04-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-34294-9 (accessed 2026-11-09).

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