Pentadecylsulfonyl chloride is a light yellow or brown oily liquid produced from natural petroleum normal alkanes with an average carbon chain of fifteen through sulfonation and chlorination reactions. Alkyl sulfonyl chloride, as a fertilizer additive, can prevent ammonium bicarbonate from caking, reduce moisture content, increase crystal particle size, and thus make the fertilizer loose and non-caking. Meanwhile, alkyl sulfonyl chloride is a non-water-soluble oily liquid and serves as a raw material for the production of synthetic fatliquoring agents. It can combine with leather fibers and enhance the tear strength of leather. It can be used in combination with fish oil as a tanning agent for oil tanning. Leather tanned with it is light-resistant and soft, and has a certain ability to withstand water washing. This agent can be used in combination with various aqueous fatting agents. Before emulsification, it should be thoroughly mixed with other emulsifiers. The best effect is achieved in the chrome retanning process, and the dosage should not exceed 1%. Technical specifications: Appearance: light yellow oily liquid. PH value: 4----6. Saponification value: % 190- 240. Specific gravity: {D20} : 0.9- 0.95. Active substances: % 46- 50