Onde, onde, onde?
Google is your friend:http://liquidglasscoating.com/ou, mais barato ainda:http://www.casadosaboeiro.com.br/produto.php?cod_produto=826789
Parece-me que são coisas diferentes...
São o mesmo material, olha o que a wikipedia diz:Sodium silicate is the common name for compounds with the formula Na2(SiO2)nO. A well known member of this series is sodium metasilicate, Na2SiO3. Also known as waterglass or liquid glass, these materials are available in aqueous solution and in solid form. http://en.wikipedia.org/wiki/Sodium_silicate