Trihexylene glycol biborate

U.S. Borax Research Corp., Anaheim, California, markets several borate esters under the trademark BORESTER. These include triethanolamine borate (BORESTER 20), tricresyl borate (m- and p-isomers) (BORESTER 8), and the biborate (4) (BORESTER 7). Whereas the chemical name for (4) is given in Table 1, it is commonly referred to as trihexylene glycol biborate [26545-48-2] and is prepared by the reaction of two moles of boric acid and three moles of hexylene glycol. 

Trihexylene glycol biborate has been developed for the remedial preservative treatment of timber. After penetration in situ the hydrolysis to boric acid (Section 6.2.1) occurs providing fungicidal and insecticidal properties. For boric acid on Pinus sylvestris sapwood the following toxic limits have been established ... 

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