About 50% of these are borate, 11% are other chemicals, and 3% are other fertilizers. a wide variety of borax pentahydrate price options are available to you, such as agriculture grade, industrial grade, and food grade. you can also choose from free samples. there are 209 borax pentahydrate price suppliers, mainly located in asia. High quality pentahydrate borax , find complete details about high quality pentahydrate borax,borax cas 1303-96-4,supply anhydrous borax,hot sale borax from borate supplier or manufacturer-zouping changshan town zefeng fertilizer factory Alibaba offers 741 borax pentahydrate products. about 42% of these are borate, 8% are other fertilizers, and 1% are inorganic acids. a wide variety of borax pentahydrate options are available to you, such as industrial grade, agriculture grade, and food grade. you can also choose from borate, sulphate, and silicate. as well as from free samples. There are 715 fertilizer grade borax suppliers, mainly located in asia. the top supplying countries or regions are china, south africa, and india, which supply 93%, 2%, and 1% of fertilizer grade borax respectively. fertilizer grade borax products are most popular in oceania, southeast asia, and south america.