Appearance: Colorless to light yellow transparent liquid, with strong irritant, spicy and foul odor, easy to smoke when exposed to air, and corrosive. Usage: An important intermediate for the synthesis of organic phosphorus, mainly used for the preparation of herbicides such as glyphosate, organic phosphorus flame retardants, plastic stabilizers, and catalysts; It is also used for synthesizing phosphorus ligands, phosphorus containing polymers, and phosphoramide coupling reagents. Due to being a precursor for easily producing drugs/explosives, it is strictly controlled by international conventions and subject to a comprehensive embargo. Conventional packaging: 1kg, 5kg, 25kg thick explosion-proof steel cylinders/PTFE lined sealed cans, filled with inert gas (nitrogen/argon) for protection. Storage conditions: Freeze below -20 ℃, avoid light, dry, explosion-proof warehouse; Strictly seal and isolate air and moisture, keep away from heat sources, fire sources, oxidants, acids, and water; Specially designated counters, dual lock control for two people, and management of highly toxic chemicals.