HazCom: Understanding Warning Labels

You can help prevent illness and injury by reading the warning label for each hazardous substance you use. If you have any questions after reading the warning label, check the MSDS. The MSDS is probably the most detailed source of information for the hazardous substance you are using.

Sample Warning Label.

Warning labels

You may see a warning label on a container or box of containers, such as a case of chemical jugs. These labels provide the most important information you need to know about the substance you are handling.

Hazard ratings—from 0 to 4, with 4 being the most hazardous—are used for 3 categories: Health, Flammability, and Reactivity. For example, if the substance has a low risk of flammability, a “1” may appear in the Flammability section. The Special Notice category shows other important hazards to be aware of.


Contact Us for a Free
Consultation & Care Assessment

Let's Get Started

Contact Us for a Free Consultation
and Care Assessment

Greenwich, CT:


Westchester, NY:


235 Glenville Road 3rd Floor,
Greenwich, Connecticut 06831

Learning Center

Medication Library

Find medication information to help educate patients, families and caregivers.

Diseases & Conditions Library

Find detailed information on a wide range of health conditions, illnesses, and treatments.

Aging Wellness Center

Find helpful articles to make the most out of your golden years.

Resource Links

Find links to helpful aging resources around the internet


Find the latest information and announcements from Sterling Care.