DL-Cysteine hydrochloride

DL-半胱氨酸盐酸盐

Also known as: DL-Cysteine hydrochloride anhydrous, Cysteine hydrochloride (1:1), DL-2-Amino-3-mercaptopropanoic acid hydrochloride, (RS)-2-Amino-3-mercaptopropanoic acid hydrochloride, H-DL-Cys-OH·HCl, DL-Cysteine HCl, 2-Amino-3-sulfanylpropanoic acid hydrochloride

DL-Cysteine hydrochloride (CAS 10318-18-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C3H8ClNO2S and a molecular weight of 157.619 g/mol. It is also known as DL-Cysteine hydrochloride anhydrous, Cysteine hydrochloride (1:1) and DL-2-Amino-3-mercaptopropanoic acid hydrochloride. Key properties include a melting point of 109-112ºC, a boiling point of 293.9ºC at 760 mmHg and a flash point of 131.5ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
10318-18-0
Jingsj CID
J-1113839-6
Molecular Formula
C3H8ClNO2S
Chinese Name
DL-半胱氨酸盐酸盐
Molecular Weight
157.619 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point109-112ºC
Boiling Point293.9ºC at 760 mmHg
Flash Point131.5ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of DL-Cysteine hydrochloride?

The CAS number of DL-Cysteine hydrochloride is 10318-18-0.

What are the molecular formula and molecular weight of DL-Cysteine hydrochloride?

DL-Cysteine hydrochloride has molecular formula C3H8ClNO2S and molecular weight 157.619 g/mol.

Is DL-Cysteine hydrochloride hazardous?

DL-Cysteine hydrochloride has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "DL-Cysteine hydrochloride (CAS 10318-18-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1113839-6 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.