Glass tube for pharmaceutical container and method for producing the same

摘要

PROBLEM TO BE SOLVED: To provide borosilicate glass for medicine containers, which has excellent workability even though BaO is not contained therein.SOLUTION: This borosilicate glass for medicine containers is characterized by containing, as essential components, SiO, AlO, BO, RO (where R is one or more elements selected from among Li, Na and K), and substantially not containing BaO. This borosilicate glass for medicine containers is also characterized in that a bending of a glass tube is 6.0 mm or less, and a thickness deviation is 15% or less. This borosilicate glass for medicine containers has, in mass%, SiO: 70.0-75.5%, AlO: 6.3-11.0%, BO: 3.0-11.5%, NaO: 4.0-8.5%, KO: 0-5.0%, and LiO: 0-0.2%. Preferably, the contents of MgO, CaO, and SrO are each 0-4 mass%, and further desirably, MgO+CaO+SrO is 0-4 mass%.SELECTED DRAWING: None