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Classification of pharmaceutical glass materials and containers by chemical composition and properties, water resistance, and molding methods

 Last Update: 2022-08-30
 Source: Internet
 Author: User

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Classified by chemical composition and performance Classified by water resistance

Chemical composition and properties		glass type
Chemical composition and properties		High borosilicate glass	Medium borosilicate glass	Low borosilicate glass	Soda lime glass
B ₂ O ₃ (%)		≥12	≥8	≥5	<5
SiO ₂^* (%)		about 81	about 75	about 71	about 70
Na ₂ O+K ₂ O ^* (%)		about 4	4~8	about 11. 5	12~16
MgO+CaO+BaO+(SrO) ^* (%)		/	about 5	about 5. 5	about 12
Al ₂ O ₃^* (%)		2~3	2~7	3~6	0~3. 5
Average linear expansion coefficient ^[^1] : ×10 ^-6 K ^-1 (20~300℃)		3. 2~3. 4	3. 5~6. 1	6. 2~7. 5	7. 6~9. 0
121℃ glass particle water resistance		Level 1	Level 1	Level 1	level 2
98℃ Particle Water Resistance ^[2]		HGB1 class	HGB1 class	HGB1 or HGB2	HGB2 or HGB3
Water resistance of inner surface		HC1 class	HC1 class	HC1 grade or HCB grade	HC2 or HC3
Acid resistance	gravimetric method	Level 1	Level 1	Level 1	Level 1~2
Acid resistance	Atomic Absorption Spectrophotometry	100μg/dm ²	100μg/dm ²	/	/
Alkali resistance		level 2	level 2	level 2	level 2

Classification by molding method

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