MSDS Potassium Chloride (KCl) – Safety Data Sheet & GHS Hazards

Summary MSDS for Potassium Chloride (KCl), CAS 7447-40-7: substance identity, GHS hazard classification, hazard and precautionary statements, and links to the manufacturer's official SDS.

Identity summary

Name	Potassium Chloride
Other names (IUPAC)	–
Molecular formula	KCl
CAS number	7447-40-7
Molar mass	74.55 g/mol
PubChem CID	4873

Molar mass of KCl and how to calculate it

The molar mass of KCl is 74.55 g/mol, the sum of the relative atomic masses of all atoms in the formula: 39.098 + 35.450 = 74.55 g/mol.

Element	Atoms	Atomic mass	Contribution	Mass %
K	1	39.098	39.10	52.45%
Cl	1	35.450	35.45	47.55%

So 1 mol of KCl weighs 74.55 g, and 1 L of a 0.1 M solution needs 7.455 g of pure KCl. For liquid or concentrated reagents, work from assay and density with the dilution formula. Calculate other compounds with the molar mass calculator.

Hazard identification (GHS)

This substance does not meet the GHS hazard criteria according to TCI official data. Still follow good laboratory practice: wear a lab coat and safety glasses and keep it in a closed, labelled container.

The GHS classification above matches TCI (Tokyo Chemical Industry) official data for product P1757 Potassium Chloride. Substance identity from PubChem CID 4873.

Download the official SDS & CoA

The applicable Safety Data Sheet is the manufacturer's SDS for the product and lot you purchase. For products available from AMI Scientific:

TCI P1757 – Potassium Chloride	Official SDS & CoA (TCI)
Potassium Chloride, CAS 7447-40-7, 1 kg – Smartlab A-2038	View product
Potassium Chloride Solution 1.0 N (1.0 M), CAS 7447-40-7, 1 L – Smartlab A-2038B	View product
Potassium Chloride Solution 3.0 N (3.0 M), CAS 7447-40-7, 1 L – Smartlab A-2038C	View product

SDS and lot-specific CoA are sent with the quotation/order or on request.

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What is an MSDS/SDS?

An MSDS (Material Safety Data Sheet), now called an SDS (Safety Data Sheet), is a 16-section document describing the hazards, handling, storage, first aid, and disposal of a chemical. Read the full MSDS guide and other MSDS pages.

This summary was compiled by AMI Scientific from TCI official GHS data for information purposes. Classification may differ by concentration, form, and supplier. Always refer to the manufacturer's official SDS for the product and lot you use. Updated: 06-11-2026.