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Pharmaceutical glass

Medicinal glass is to point to the glass that is used for medicaments to pack technically, it is to point to glass jar and vessel commonly.


Medicinal glass is to point to the glass that is used for medicaments to pack technically, it is to point to glass jar and vessel commonly. According to glass material, can be divided into sodium calcium glass and borosilicate glass. According to the manufacturing process can be divided into mold bottles, control bottles, ampoules. The chemical property is one of the important standards to measure the quality of medicinal glass, among which the most important parameter is the linear thermal expansion coefficient. Whether long-term storage of medicine and glass will reflect. According to linear thermal expansion coefficient, medicinal glass has corresponding classification. The international standard ISO 12775-1997 "Classification of Normal Mass-produced Glass by Composition and Test Methods" divides medicinal glass into three types:


3. 3 borosilicate glass


The linear thermal expansion coefficient of this glass is as follows: = (3. 3 ± 0.1) ×10 (-6) K(-1) (20 ~ 300 ℃).


SiO2≈81 % B2O312 ~ 13% R2O≈4 % Al2O3 2 ~ 3 %


= 2 \* GB2 Neutral glass


The linear thermal expansion coefficient of this glass is as follows: = (4 ~ 5) ×10 (-6) K(-1) (20 ~ 300 ℃).


SiO 2≈ 75% B2O3 8 ~ 12% R2O 4 ~ 8% RO < 5% Al2O3 2 ~ 7%


= 3 \* GB2 sodium calcium glass


The linear thermal expansion coefficient of this glass is as follows: = (8 ~ 10) ×10 (-6) K (-1) (20 ~ 300 ℃).


SiO2 70 ~ 75% R2O12 ~ 16% RO 10 ~ 15% Al2O3 0.5 ~ 2.5 %


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