PROBLEM TO BE SOLVED: To provide borosilicate glass for pharmaceutical container, which has good processability even when BaO is not contained, and does not easily generate bubbles when heated by a burner at the time of container processing.SOLUTION: Provided is borosilicate glass for pharmaceutical container comprising, in terms of mass%, 65 to 80% of SiO2, 5 to 15% of Al2O3, 2 to 12% of B2O3, 3 to 10% of Na2O, 0 to 5% of K2O, 0 to 5% of Li2O, 0 to 5% of MgO, 0 to 5% of CaO, and 0 to 5% of SrO, where a mass ratio of Al2O3/(Na2O+K2O+Li2O+MgO+CaO+SrO+B2O3) is 0.35 to 0.60, BaO is substantially not contained, and a water content in the glass, in terms of a β-OH value, is 0.2 to 0.7/mm.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】BaOを含有しないにも関わらず、加工性が良く、しかも容器加工時のバーナー加熱で泡が発生しにくい医薬容器用ホウケイ酸ガラスを提供する。【解決手段】質量%でSiO2 65~80%、Al2O3 5~15%、B2O3 2~12%、Na2O 3~10%、K2O 0~5%、Li2O 0~5%、MgO 0~5%、CaO 0~5%、SrO 0~5%含有し、質量比でAl2O3/(Na2O+K2O+Li2O+MgO+CaO+SrO+B2O3)の値が0.35~0.60であり、BaOを実質的に含まず、ガラス中の水分量がβ-OH値換算で0.2~0.7/mmであることを特徴とする。【選択図】なし
