Ibiranga borax ya anhydrous ni kristu yera cyangwa kirisiti idafite ibirahuri idafite ibara, aho gushonga kwa α orthorhombic kristal ni 742.5 ° C, n'ubucucike ni 2.28;Ifite hygroscopique ikomeye, ishonga mumazi, glycerine, kandi igashonga buhoro buhoro muri methanol kugirango ibe igisubizo hamwe na 13-16%.Igisubizo cyamazi cyayo ni alkaline nkeya kandi ntigishobora gukomera muri alcool.Anhydrous borax nigicuruzwa kidafite imbaraga kiboneka iyo borax ishyutswe kuri 350-400 ° C.Iyo ishyizwe mu kirere, irashobora kwinjiza ubuhehere muri borax decahydrate cyangwa borax pentahydrate.