Nature and Functional Mechanism of “+Double Fresh” “1-MCP” PreservativeWith the molecular formula of C4H6 and boiling point of about 10℃, “1-MCP” exists in the form of gas under the normal temperature without extraneous odor and it is unstable in the liquid state. “+Double Fresh” “1-MCP” Preservative absorbs and fixes the “1-MCP” gas in the carrier, and dissolves certain preparation in water according to the type of processed horticultural products and volume of closed container during use so that the “1-MCP” gas will be released