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Kirsten’s Back to Basics Chemistry

By: Kirsten Alcock, Product Safety manager, email

CAS Numbers

In order to accurately classify our Clients’ product mixtures, Dell Tech requests the raw material CAS numbers. Some clients have asked, What is a CAS Number?

A CAS Number is a unique numerical identifier assigned by the Chemical Abstracts Service (CAS), a division of the American Chemical Society,  to every unique chemical. The universally accepted number assigned can contain upwards to 10 digits. The CAS assigned to a chemical is divided by hyphens into three parts. The CAS Registry is updated daily with approximately 15000 new chemicals.  If a chemical does not have a CAS assigned, one applies to the service to obtain one.

An example of a widely known CAS Number is Formaldehyde: 50-00-0

For further information on how to obtain a CAS for a new chemical, please visit the American Chemical Society


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