3.1.1: General Principles for Designing Safer Chemicals External considerations They refer to the reduction in exposure by designing chemicals that influence important physical and chemical properties related to environmental distribution and the up-take of the chemical by man and other living W organIsms 四大学化学学院 2002年7月26日四川大学化学学院 2002年7月26日 3 3.1.1： General Principles for Designing Safer Chemicals ◼ They refer to the reduction in exposure by designing chemicals that influence important physical and chemical properties related to environmental distribution and the up-take of the chemical by man and other living organisms. External considerations