Zvinhu zveanhydrous borax makristasi machena kana makristasi asina ruvara, nzvimbo yakanyunguduka ye α orthorhombic crystal ndeye 742.5 ° C, uye density ndeye 2.28;Iine hygroscopicity yakasimba, inonyunguduka mumvura, glycerin, uye zvishoma nezvishoma inonyungudika mu methanol kuti iite mhinduro ine 13-16%.Mushonga wayo une aqueous hauna kusimba alkaline uye hainyunguriki mudoro.Anhydrous borax chigadzirwa chisina mvura chinowanikwa kana borax ichidziiswa kusvika 350-400°C.Kana ikaiswa mumhepo, inogona kutora unyoro mu borax decahydrate kana borax pentahydrate.