sodium bicarbonate 1.food grade 2.tech grade,used as detergent materials, textile indutry,electronic industry 3. ... water, water solution is faintly alkali, decomposition if heating.Other tech indexs: ItemsTech GradeTotal Alkalinity content (as NaHCO3)%min.99.2PH ... :14 days after ordering(ASAP)Shelflife:24 monthsCarried Standard: the international standards, such as BP, USP, FCC, etc. and China National ...