Note:we sold caustic soda flakes as an export agent for a manufacturer in our local place, because we are in a small city and many companies have no person with ability to contact with foreigners.Product description1)general infos:classification: caustic soda flakecas no.: 1310-73-2 un no.: 1823other names: sodium hydroxidemf: naohplace of origin: jizhou hebei china (mainland)grade standard: industrial gradepurity: 98-99% 70-74%appearance: white flakes color: transparentchemical formular: naohpackaging: 25kgbag pp bag with pe liner, one 20'ft container holds 25 tons2)application:sodium hydroxide is the principal strong used in the chemical industry. Generally it is used in chemical analysis, soap production, paper making, alumina production, biodiesel, aluminum etching, food preparation and used as paint stripper, gold pennies, etc.Used as a raw material in the manufacture if soap, detergent, textiles and paper, in water softening and treatment, refining petroleum products, in sanitation, and hygiene products, and in the food and drug industry, etc