PROBLEM TO BE SOLVED: To provide a borosilicate glass for a medicament container that is free from BaO, has excellent chemical durability and hydrolysis resistance, and has a low operation point.SOLUTION: A borosilicate glass for a medicament container contains SiO2 of 70.0-75.5%, Al2O3 of 6.3-11%, B2O3 of 3-11.5%, Na2O of 4.0-8.5%, K2O of 0-5%, and Li2O of 0-0.2%, and is substantially free from BaO.COPYRIGHT: (C)2015,JPO&INPIT【課題】ＢａＯを含有しないガラスであって、化学的耐久性や加水分解抵抗性が良好であり、且つ作業点の低い医薬容器用ホウケイ酸ガラスを提供する。【解決手段】ＳｉＯ２ ７０．０～７５．５％、Ａｌ２Ｏ３ ６．３～１１％、Ｂ２Ｏ３ ３～１１．５％、Ｎａ２Ｏ ４．０～８．５％、Ｋ２Ｏ ０～５％、Ｌｉ２Ｏ ０～０．２％含有し、ＢａＯを実質的に含まないことを特徴とする。【選択図】図１
