What Is a CAS Number?

Here at ICC Compliance Center and depending on your application, we may ask you for a CAS number. When we create labels on demand for your exports, among other services, we will ask you to provide us with the chemical name and CAS number and then we are able to provide as few as 100 GHS compliant labels  and/or a compliant SDS.

Compliant GHS Chemical Label:

Compliant GHS chemical label

A CAS number or CAS Registry number is a unique identifier for every chemical substance dating back to 1957. The Chemical Abstracts Service (CAS) is the responsible entity that is responsible for assigning a unique number to every chemical described in scientific literature.

A CAS number itself has no meaning. Its primary use is to avoid confusion between chemicals with similar names, or individual chemicals that may have multiple names. It is also used to identify the chemical when a generic or trade name is used.

A CAS Registry Number is separated by hyphens into three parts, the first consisting of up to seven digits, the second consisting of two digits and the third consisting of a single digit.

In short, the CAS number can be particularly useful in database searches because it allows you to search a database and easily pull every record for that particular substance or chemical. For example, “Methanol” is known by multiple names such as methyl alcohol, methyl hydrate, hydroxymethane and Continue Reading…