Sodium Silicate, Dry, 3.22 Weight Ratio (N grade) - (Contact shop to request actual ship cost for multi items)

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$2.00+
+ $3.50 shipping
$2.00
$3.00
$4.00
$7.00
$2.00+
+ $3.50 shipping
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Arrives from the United States
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Item details

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This is the dry form of sodium silicate with a weight ratio the same as the "N" grade 40% liquid solution that is most commonly sold. Buying sodium silicate dry is economical because per unit weight, say 16 ounces, you're buying 60% water (about 9.5 ounces) and 40% dry sodium silicate (about 6.5 ounces). You're also paying extra shipping for that water.
The supplier says: "A fine, white powder. When dissolved, it forms a hazy, colorless colloidal solution. SSG sodium silicate is used for several specialized refractory compounds and acid-resistant cements. Sodium silicate functions as a binder for powdered materials which are intended to be mixed with water for use as cements (high temperature and/or acid-resistant) and for other purposes such as a deflocculant in clay slips."
This is "hydrous" dry sodium silicate. The hydrous part (versus "anhydrous", which is also available) makes this dry version very easy to dissolve into the "N" grade 40% solution that you (probably, but not necessarily) want. When "weight ratio" is mentioned with sodium silicate, it means the ratio of SiO2 to Na2O, or the ratio of "silicate" to "sodium" (not quite accurate chemical terms but easy to understand). Sodium silicate is alkaline (the opposite of acidic). Highly alkaline substances can be corrosive. Lye (the stuff you clean drain pipes with) is extremely alkaline. Most soaps and detergents are alkaline to some degree. Sodium silicate is a skin irritant becuase of its alkalinity. When mixing or dispensing sodium silicate you should avoid getting on your skin or inhaling dust. It gets a oderately "unhealthy" rank of 2,0,0 on the NFPA diamond.
The "weight ratio" tells you how alkaline your sodium silicate is: as the weight ratio number goes down, the alkalinity goes up. The specific weight ratio for this sodium silicate is 3.22 (SiO2/Na2O). It breaks down this way: the percentage of SiO2 is 61.8, and the percentage of Na2O is 19.2 (so, 61.8/19.2 = 3.22). The amount that's left over (61.8 + 19.2 = 19) is the amount of chemically bound water, 19%.
To make a 40% solution of "N" grade you would weigh 40 grams (for example) of dry sodium silicate and stir it into 60 grams of warm water.
Sodium silicate (also called "water glass") has been known for centuries (first observed in 1640 and first defined in 1892). The type sold today is more accurately named "sodium metasilicate" (Na2SiO3). The weight ratios of 3.22 and 2 are most common. The weight ratio of 2 is more alkaline than the 3.22, and is usually designated by adding "Alkaline" to the phrase Sodium Silicate. The "N" grade 40% solution (with a weight ratio of 3.22) has a pH of 11.3.
The Wiki article on sodium silicate is here and has an extensive list of uses:
https://en.wikipedia.org/wiki/Sodium_silicate
"Sodium silicate is a white powder that is readily soluble in water, producing an alkaline solution...The main applications are in detergents, paper, water treatment, and construction materials...[Other uses are:]...an adhesive, in drilling fluids, concrete and general masonry treatment, detergent auxiliaries, refractory use {Water glass is a useful binder of solids, such as vermiculite and perlite. When blended with the aforementioned lightweight aggregates {water glass can be used to make hard, high-temperature insulation boards used for refractories, passive fire protection and high temperature insulations}, dye auxiliary, passive fire protection, food preservation {note this listing is not for food grade}, metal and auto repair {high temperature exhaust systems}, home brewing, aquaculture, safes construction, crystal gardens, pottery {Sodium silicate is used as a deflocculant in casting slips helping reduce viscosity and the need for large amounts of water to liquidize the clay body. It is also used to create a crackle effect in pottery, usually wheel-thrown. A vase or bottle is thrown on the wheel, fairly narrow and with thick walls. Sodium silicate is brushed on a section of the piece. After 5 minutes, the wall of the piece is stretched outward with a rib or hand. The result is a wrinkled or cracked look. It is also the main agent in "magic water", which is used when joining clay pieces, especially if the moisture level of the two differs}, sealing of leaking water containing structures {Sodium silicate with additives was injected into the ground to harden it and thereby to prevent further leakage of highly radioactive water from the Fukushima Daiichi nuclear power plant in Japan in April, 2011.}, bullet cartriges {an historical use with paper cartridges}.-
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-------------------------------> COMBINED SHIPPING <----------------------------------
Shipping cost will be reduced when buying multiple items that are small & light weight. To see total cost with actual shipping, mark the items you want as favorites, then message me with a request for actual shipping of your favorited items. Or, list your items in a message, requesting ship cost. I'll send you the cost & if you approve I'll make a reserved listing.
Or, just buy the items in your cart. I will do a refund for the ship overage as soon as I see your order. (Don't want to message me? I automatically check for ship overages, & will make a refund if applicable).
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FAQs

I'm sorry, but at this time we do not ship internationally.

If you would like a smaller or larger quantity of a raw material, click the "Request a custom order" button and tell us how much you would like. Or just contact us and let us know what you'd like. We'll get back to you ASAP.

This problem usually occurs with multiple items. Where possible, we're converting to calculated shipping. We originally didn't provide it because we sell so many dissimilar items (size, weight, etc), that it would not be possible to do it accurately. If your shipping cost is high, you can do one of the following: If you see "Request a Custom Order", "Contact", or "Ask a Question" on an item's page, you may use it to request a reserved listing. You may copy and paste a list of the items in your cart, send a screen shot of your items, or simply favorite them, and request a "reserved" or "custom" order. Or you may do nothing. We will see your multiple items & will always refund excess shipping charges before shipping your items.

If you have a technical question about an item we've listed, please don't hesitate to ask. We enjoy helping people out with a material or a process. We give anecdotal information in our listings if we have any. If you disagree with it or think we're being inaccurate or misleading please let us know that, too. If there are discrepancies in any of our listings let us know, we make mistakes like everybody and we'd like to be set straight and get those mistakes corrected.

I'm sorry, but at this time we do not ship internationally.

If you would like a smaller or larger quantity of a raw material, click the "Request a custom order" button and tell us how much you would like. Or just contact us and let us know what you'd like. We'll get back to you ASAP.

This problem usually occurs with multiple items. Where possible, we're converting to calculated shipping. We originally didn't provide it because we sell so many dissimilar items (size, weight, etc), that it would not be possible to do it accurately. If your shipping cost is high, you can do one of the following: If you see "Request a Custom Order", "Contact", or "Ask a Question" on an item's page, you may use it to request a reserved listing. You may copy and paste a list of the items in your cart, send a screen shot of your items, or simply favorite them, and request a "reserved" or "custom" order. Or you may do nothing. We will see your multiple items & will always refund excess shipping charges before shipping your items.

If you have a technical question about an item we've listed, please don't hesitate to ask. We enjoy helping people out with a material or a process. We give anecdotal information in our listings if we have any. If you disagree with it or think we're being inaccurate or misleading please let us know that, too. If there are discrepancies in any of our listings let us know, we make mistakes like everybody and we'd like to be set straight and get those mistakes corrected.



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    (1)
    I received my order sooner than I expected. It was well packaged and faily priced. I will purchase from this seller again.
    May 9, 2018 by D. Pabst

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