Mainly used to manufacture iode, pesticides, feed additives, dyes, iod tincture, test paper, drugs, etc. - Used as electronic industry materials and high purity reagents. - Used for capacity analysis and colorimetric analysis. -Used for the basic raw material for making inorganic dide and organic dide. It is mainly used in medical and health care to manufacture all kinds of dine preparations, fungicides, disinfectants, deodorants substances. Used for the synthesis of dyes, smoke extinguishing agent, photographic emulsion and antibacterial agent of cutting oil emulsion in industry; - Used to manufacture electronic instrument such as single crystal prism, optical instrument such as polarizer and a glass being capable of transmitting through infrared rays; -Used for leather and special soap. dine is a good catalyst in organic synthesis reactions of methylation, isomerization and dehydrogenation; - Used as a separating agent for alkanes and olefins; - Used as a refining agent for high purity zirconium, titanium, hafnium, silicon and germanium; - Used as a stabilizer for rosin, tall oil and other wood products; - Used to formulate equivalent solvent, determinate dine value, calibrate concentration of sodium thiosulfate solution.