精选优质文档-倾情为你奉上National Fire Protection Association (NFPA)Chemical Hazard Identification SystemThis system is based on the NFPA 704M Hazard Identification system which utilizes a four color diamond label and 0-4 numerical hazard rating. The Diamond has an area for health hazards (blue) and area for flammability hazards (red), an area for reactivity hazards (yellow), and an area for special hazard notations.Health - Numerical Rating:0 - Minimal hazardMedian Lethal Dose (LD50)