{"product_id":"sodium-silicate-water-glass-1-quart-rmsodsilw35q","title":"Sodium Silicate (Water Glass)","description":"\u003cdiv class=\"rm-testing-statement\" style=\"border:2px solid #8a5a00;border-radius:6px;padding:12px 16px;margin:16px 0;background:#fdf6e3;\"\u003e\u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eYou must test before you use it, at any scale.\u003c\/strong\u003e Raw materials, mined or man-made, are not consistent. Color, strength, particle size and chemistry can change from one bag to the next and from one supplier to another, even when the name on the bag stays the same. Before you use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eSODIUM SILICATE (WATER GLASS) 1 Quart\u003c\/h2\u003e\n\u003cp\u003eSodium silicate is a useful compound in ceramics. It can be used in combination with soda ash as a deflocculant in terra sigillata and slips.\u003cbr\u003eIt is also used in the crackled texture technique where it is applied to a freshly thrown clay cylinder, allowed to dry, then stretched from the inside of the pot. This creates a highly textured, crackled clay surface.\u003c\/p\u003e\n\u003cp\u003e\u003ci\u003e\u003cb\u003eFROM DIGITAL FIRE:\u003c\/b\u003e\u003c\/i\u003e\u003cbr\u003eNa2SiO3 Deflocculant, De-flocculant\u003c\/p\u003e\n\u003cp\u003eSodium silicate is a sticky, viscous liquid. \u003cbr\u003eSodium silicate is the most popular deflocculant used in casting slips for many years. It is nearly always used with soda ash. \u003cbr\u003eThe material is effective, reliable and inexpensive. However, it attacks the plaster in molds much more than more modern deflocculants and it is easier to over-deflocculate a slip with sodium silicate.\u003c\/p\u003e\n\u003cp\u003eThere are potassium based deflocculants that are similar to the corresponding sodium ones. They can be employed where the presence of sodium is undesirable. Soda ash is more suitable for deflocculating glazes. In addition, a wide range of organic deflocculants are available as alkali salts of pyrogallic, humic or tannic acids. They have long working ranges and can increase the apparent plasticity of the clay. As noted, their use prolongs mold life compared with sodium silicate and soda ash and they are less prone of over-deflocculation. Tetramethylammoniumhydroxide is also an organic compound that is used where residues from inorganic salts cannot be tolerated. It is a strong base that can even attack glass and quartz.\u003c\/p\u003e\n\u003cp\u003eBecause sodium silicate is sticky and dries hard, it can be used as a glue to bind ceramic particles together, even aggregates. On firing it forms a ceramic bond. Mixtures of sodium silicate and perlite, for example, can be rammed into molds to form shapes that dry with zero shrinkage and have excellent insulating properties. It can be incorporating into bodies to improve their dry strength. As the main ingredient in Magic Water, it can bind leather-hard clay section better than the clay slurry (slip) alone.\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"Pint","offer_id":67293616439667,"sku":"RMSODSILW35P","price":17.15,"currency_code":"USD","in_stock":true},{"title":"Quart","offer_id":45113751765314,"sku":"RMSODSILW35Q","price":19.4,"currency_code":"USD","in_stock":true},{"title":"Gallon","offer_id":67293616472435,"sku":"RMSODSILW35G","price":46.0,"currency_code":"USD","in_stock":true},{"title":"3.5 Gallon Pail","offer_id":67293616505203,"sku":"RMSODSILW35","price":72.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/products\/nophoto_56fb25f4-969a-4f96-a102-afe8401c9c88.gif?v=1683889042","url":"https:\/\/www.sheffield-pottery.live\/products\/sodium-silicate-water-glass-1-quart-rmsodsilw35q","provider":"Sheffield Pottery Inc.","version":"1.0","type":"link"}