Glass Compositions
Pharmaceutical Glass Containers
2 Glass types are used for pharmaceutical containers : borosilicate and sodo-lime-silicate glass.
Borosilicate glass has a high hydrolytic resistance, it is classified as Type I glass.
Soda-lime-silicate glass contains more alkali and alkaline earth oxides, it has a moderate hydrolytic resistance, it is classified as Type III glass.
Internal treatment of Type III glass with sulfur-containing compounds can be used to improve the hydrolytic resistance of the glass, it is Type II glass (bulk Type III glass with the same surface resistance as a Type I glass).
Flint and amber colors are the 2 colors used.
The glass types and their proper use are regulated.
Perfumery and Cosmetics Glass Containers
Most perfumery and cosmetics containers are made of sodo-lime-silicate glass.
There is no official current requirement on the glass Type or hydrolytic resistance. Most glass compositions have more alkali and alkaline earth oxides than pharmaceutical glass to soften the glass and produce complex container shapes. Therefore, the hydrolytic resistance is not regulated and compatibility with the products (including extractables and leachables) may need to be examined.
Many colors are produced by changing the glass composition in the glass tank or by using feeder coloration.
Pharmaceutical Glass Containers
2 Glass types are used for pharmaceutical containers : borosilicate and sodo-lime-silicate glass.
Borosilicate glass has a high hydrolytic resistance, it is classified as Type I glass.
Soda-lime-silicate glass contains more alkali and alkaline earth oxides, it has a moderate hydrolytic resistance, it is classified as Type III glass.
Internal treatment of Type III glass with sulfur-containing compounds can be used to improve the hydrolytic resistance of the glass, it is Type II glass (bulk Type III glass with the same surface resistance as a Type I glass).
Flint and amber colors are the 2 colors used.
The glass types and their proper use are regulated.
Perfumery and Cosmetics Glass Containers
Most perfumery and cosmetics containers are made of sodo-lime-silicate glass.
There is no official current requirement on the glass Type or hydrolytic resistance. Most glass compositions have more alkali and alkaline earth oxides than pharmaceutical glass to soften the glass and produce complex container shapes. Therefore, the hydrolytic resistance is not regulated and compatibility with the products (including extractables and leachables) may need to be examined.
Many colors are produced by changing the glass composition in the glass tank or by using feeder coloration.
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