## Sodium Silicate

**Formula**

$Na2SiO3$

**Pyrotechnics use**


**Synonyms**
 

**Description**

Sodium silicate, also known as water glass or liquid glass, available in liquid and solid (prill) form, is used for passive fire protection.

**Sources** 

It can be bought from online pyrotechnic stores and ceramic supply shops. It can be bought in either liquid form or a dry powder. When dry it is mixed with water and a small amount is placed around pass fire holes and exhaust holes (see hummer).

**Hazards**
 
Sodium silicate is corrosive and may cause health problems with over exposure. It is best to avoid eye and skin contact and vapour or mist inhalation.