It can be cost effective to buy concentrated cleaning chemicals in bulk. When you dilute and/or transfer chemicals to secondary, smaller bottles for regular use, those secondary containers are required to have identification labels. OSHA's Hazardous Communication standard requires that "the identity of the chemical and appropriate hazard warnings must be shown on the label."
You can request secondary labels free of charge.
OSHA also requires Safety Data Sheets (SDS) for all chemicals used on your property. The purpose of an SDS is to provide employees and emergency workers with detailed safety information and proper handling instructions. Learn more on Safety Data Sheets.