Borax pentahydrate description of borax price mf: na2b4o7.5h2o appearance: white powder or granular purity: 99.5% min free sample specification of borax price item specification sodium borate 10 hydrous (na2b4o7·10h2o)%≥ 99.5% sodium carponate (na2co3) % ≤ 0.1% insoluble matter in water % ≤ 0.04% sodium suitate (na2so4) % ≤ 0.1% sodium Tags: borax decahydrate b 10.5% white powder for agriculture use and industry use Alibaba offers 1,274 borax price products. about 40% of these are borate, 10% are inorganic acids, and 1% are other fertilizers. a wide variety of borax price options are available to you, such as agriculture grade, industrial grade, and food grade. you can also choose from borate, carbonate, and chloride. Alibaba offers 338 borax decahydrate price products. about 59% of these are borate, 1% are other inorganic chemicals. a wide variety of borax decahydrate price options are available to you, such as agriculture grade, industrial grade, and reagent grade. you can also choose from free samples, paid samples.