Sodium Silicate

Sodium Silicate 140Tw
Sodium Silicate 140Tw Sodium Silicate 75Tw 140Tw packaging 75Tw packaging
Sodium silicate, also known as waterglass is available as a high viscocity and density 140Tw (~54% concentration) and low viscocity and density 75Tw (~36% concentration).

Buy Sodium Silicate

140Tw (High viscocity)

Volume Cost Quantity
500ml £8.50
1 litre £14.20

75Tw (Low viscocity)

Volume Cost Quantity
500ml £8.50
1 litre £14.20


Sodium Silicate, also called waterglass, has a very wide range of applicaitons, including an adhesive or binder, especially in high temperature environemnts, it is a major component of most exhaust repair puttys. Sodium silicate (waterglas) solutions are used to preserve fresh eggs by sealing the pores in the shell, keeping bacteria out and water in. Sodium silicate can be used with calcium chloride to treat cardboard mortars using the method in this link.


Type 75Tw 140Tw
Concentration ~36% ~54%
Density (sg) 1.4 1.7
Twaddle 75 140
Viscocity (Centipoise) 100 90,000
Viscocity (Similar to) SAE 10 Motor Oil Mustard
Formula Na2O(SiO2)3.0 Na2O(SiO2)2.05



Irritating to the skin. Risk of serious damage to eyes.
Keep out of reach of children. In case of contact with eyes rinse immediately with plenty of water and seek medical advice. Wear suitable gloves. Wear eye and face protection.


Sodium Silicate 140Tw MSDS

Product Identifiers

500ml 140Tw (High viscocity): 0029882792629, 1 litre 140Tw (High viscocity): 0029882792636, 500ml 75Tw (Low viscocity): 0029882796481, 1 litre 75Tw (Low viscocity): 0029882796498,
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