What is an HMIS rating?

Hazardous Materials Identification System (HMIS) is a voluntary hazard rating scheme developed by American Coatings Association (ACA) to help employers comply with workplace labeling requirements of the U.S. Occupational Safety and Health Administration's (OSHA) revised Hazard Communication Standard (HCS). HMIS communicates in-plant chemical hazard information through the use of colors, numbers, and letters of the alphabet (see example below). 0 is a minimal hazard, whereas 4 is severely hazardous. We received 0 in all three categories, health, flammability, and reactivity.