PROBLEM TO BE SOLVED: To provide borosilicate glass for pharmaceutical container, having good processability even when BaO is not contained.SOLUTION: Provided is borosilicate glass for pharmaceutical container comprising SiO2, Al2O3, B2O3, and R2O (R is one or more selected from Li, Na, and K) as essential components and substantially not containing BaO, where a water content in the glass, in terms of a β-OH value, is 0.3 to 0.8/mm, and the glass contains, in mass%, 70.0 to 75.5% of SiO2, 6.3 to 11% of Al2O3, 3 to 11.5% of B2O3, 4.0 to 8.5% of Na2O, 0 to 5% of K2O, and 0 to 0.2% of Li2O. Further provided is the borosilicate glass for pharmaceutical container, where a content of MgO, CaO, and SrO is 0 to 4 mass%, 0≤MgO+CaO+SrO≤4 mass%, preferably 0≤MgO+CaO<1 mass%, and preferably 5≤Na2O+K2O+LiO2≤10 mass%.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】BaOを含有しなくても、加工性の良い医薬容器用ホウケイ酸ガラスの提供。【解決手段】SiO2、Al2O3、B2O3、R2O(RはLi、Na、Kから選ばれる1種類以上)を必須成分として含み、BaOを実質的に含有せず、ガラス中の水分量がβ-OH値換算で0.3~0.8/mmであり、質量%でSiO270.0~75.5%、Al2O36.3~11%、B2O33~11.5%、Na2O4.0~8.5%、K2O0~5%、Li2O0~0.2%含有する、医薬容器用ホウケイ酸ガラス。更にMgO、CaO及びSrOの含有量が0~4質量%であり、0≦MgO+CaO+SrO≦4質量%であり、0≦MgO+CaO<1質量%であることが好ましく、5≦Na2O+K2O+LiO2≦10質量%であることが好ましい、医療容器用ホウケイ酸ガラス。【選択図】なし
