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. 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. Boron in fertilizer applications. ... u.s. borax, part of rio tinto, is a global leader in the supply and science of borates—naturally-occurring minerals containing boron and other elements. we are 1,000 people serving 500 customers with more than 1,700 delivery locations globally. we supply 30% of the world’s need for refined borates from ... Borate fertilizer 99.5% powder & granular borax pentahydrate, us $ 550810 / metric ton, borate, china, runzi.source from shandong jinrunzi bio-tech co.,ltd. on alibaba.