In the identification of major hazard sources, is the critical quantity applicable to pure substances?
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In the identification of major hazard sources, is the critical quantity for hazardous chemicals based on pure substances? Is it necessary to account for purity when identifying major hazard sources?
Personally, I think it must be a pure substance. Otherwise, oxygen and hydrogen in the atmosphere... would all be major hazards, and there would be no such thing as major hazards anymore
It should be calculated as a pure substance; the draft document on \"Identification of Major Hazard Sources for Hazardous Chemicals\" uses calculations based on pure substances. Such as formaldehyde, etc.
There is a formula for calculating the mixture, and China has adopted the Seveso II and PSM regulations.