|Alcali resistant glass 4300|
Alkali-resistant Pfaudler Glass 4300
Soft soda glass and glass qualities used for chemical apparatus are characterized by excellent resistance to acids due to their structural properties. For this reason, they are mainly used in acid protection. Resistance to alkalis is a natural asset of the metallic reactor materials, therefore, alkali protection is their principal field of application. As a result of many decades of development activities, these boundaries have largely become flexible.
Pfaudler glass WWG and PPG
Pfaudler Glass 4300
It is also advisable to use Glass 4300 if one of the following conditions is present:
Anhydrous organic alkalis and organometallic compounds are not to be treated as alkalis for the purpose of glass corrosion. WWG and Glass 4300 can be equally used without any restrictions. As long as it remains in the scope of customary contamination, a certain amount of water does not affect this property.
Compared to WWG, Glass 4300 is characterized by a 30% higher resistance to alkalis. This means higher working temperatures, or a longer useful life under otherwise identical conditions. Please refer to the new resistance diagrams for sodium hydroxide and carbonate, potassium hydroxide and ammonia in our publication 614 (Pfaudler materials).
The acid resistance of Glass 4300 amounts to 60 % of that of WWG. For its thermal capacity, refer to publication 303.
Glass 4300 is a special glass quality, i.e. it is not applied to series parts, and is not kept on stock. It is distinguished from other qualities by its light blue color pigments.