Why is glass green

Window glass is generally made of soda-lime glass. The lime acts as a stabilizer while the silica is the glass former see the British Glass website for more information about its composition. To make glass colorless, a mineral must be introduced "into the batch which neutralizes the coloring effect of other materials.

Traditionally, the decolourising agent used over many years was manganese dioxide In the process, the manganese and the iron each absorb the light which the other transmits.

Selenium and a mixture of selenium and cobalt have also been used in a similar context. Was this helpful? Yes 2 No 0. Warning: Your browser has javascript disabled. Without javascript some functions will not work, including question submission via the form. What is the difference between glass and crystal? What gives glass the green tint on the edge? Toggle menu visibility. Most glass contains iron oxide as an impurity which gives the glass a slightly green hue.

But when you look down the side it becomes apparent because of the thickness. Clear glass is not the clearest type of glass you can get; the amount of iron content gives clear glass a greenish tint to it. Low iron glass is more transparent than regular glass. Low iron glass absorb less heat than ordinary glass and avoid energy saving. So Low-e low iron tempered insulated glass is perfect for curtain wall. Perfect performance in energy saving and safety. Clear float glass has a pale blue-green tint owing to a small content about 0.

Looking down the length of a large shelf, the edge will look almost black. Leave the object in vinegar and water overnight to loosen calcium deposits, rinse with water and dry with a microfiber towel. Vaseline or petroleum jelly can sometimes remove light calcium build-up. Let it sit for days before removing. Low-iron glass is often used:. No matter the application, architects and designers now have several options. Glass Education Center. The Common Uses of Clear Glass Clear glass is extremely common, and is popular in a variety of architectural design applications.

Why the Green Color?