Sodium tetraborate (Sodium tetraborate, borax, borax, borax, E285) munyu we boric acid isina simba uye hwaro hwakasimba, musanganiswa weboron wakajairika, une makiristadhi akati wandei. Chemical formula Na2B4O7.
Sodium tetraborate inoshandiswa sechinhu chinogadzirwa nesipo yezvizoro; mumapepa nemaindasitiri emishonga; mukugadzira enamels, glazes, Optical uye mavara magirazi; semushonga unouraya utachiona uye unochengetedza.