1, used in the manufacture of carboxymethyl cellulose (CMC). 2, in the pharmaceutical industry on preparation for the synthesis of caffeine, epinephrine, amino acetic acid, malonic acid ester, vitamin B6, aureomycin and other intermediates. 3, pesticide industry for the preparation of glycine, Rogor, NAA, Thiocyanate acetic acid, iso Mainz esters, herbicide, herbicides, etc. Intermediates. 4, dye industry for the production of indigo and related dyes. 5, for analyzing a variety of chemical reagents and organic synthesis intermediates.