Alibaba offers 237 borax pentahydrate na2b4o7.5h2o products. about 60% of these are borate, 2% are other fertilizers, and 1% are other chemicals. a wide variety of borax pentahydrate na2b4o7.5h2o options are available to you, such as agriculture grade, industrial grade. Borax priceselect 2020 high quality borax price products in best price from certified chinese borax powder manufacturers, china decahydrate suppliers, wholesalers and factory on made-in Borax (pentahydrate & dehydrate) offered comes in quality constitution form and is developed upon processing of boron ores into refined boron derivatives. having a high demand in the markets, the chemical can be made available by us in both small as well as bulk packaging quality as per the specific demands placed at our Na2b4o7.5h2o white borax pentahydrate granular has big useful in antifreeze and adhesive description borax pentahydrate comprises of 5 mol water. it is stated also as sodium . tetraborate pentahydrate, disodium tetraborate pentahydrate, borax 5 mole. borax . pentahydrate, chemical formula is na2b4o7.5h2o, is white, odorless and granular.