Chemical stability ed inertia of glass are the features of glass that make it appreciated and sought after in pharmaceutical sector, they are in fact a guarantee in the preservation of medicines and in packaging and packaging.
Pharmaceutical glass is produced in colors transparent white e amber yellow with reduced light transmission suitable for photosensitive drugs.
The classification of Pharmaceutical Glass also takes into account the form of the drug it will contain.
Type I (neutral) is suitable for containing injectable drugs and in liquid form
Type II (sodium-calcium) heat treated with ammonium sulphate or sulfur dioxide, this treatment is used to give further stability to the container so that it can contain infusion solutions with PH not higher than 7.
Type III (Sodium-Calcium): it is used for drugs in solid or liquid form for oral or external use (Syrups and Drops) or for injections to be prepared (Powdered antibiotics).
In the packaging of drugs, the use not only of bottles, in the same type of glass but with superior chemical stability, is envisaged.
These are for impromptu injectable drugs and drinkable drugs.
In addition to containers, both molded and made from glass tubes (threads and vials), which have a high chemical resistance, known as “neutral glass” for liquid injectable products.
For those solutions that have different volumes (physiological / glucose type up to 500ml) a special treatment of the internal surface of the container has been studied which increases the chemical resistance to the level of that of neutral glass.
This technical application of improving calcium hydrolytic resistance has guaranteed to offer the pharmaceutical industry a “packaging” of great value.
Source: Assovetro.it
