Yes it would be fine in coffee as an anticaking agent in small quantities. It is used in some coffee brands. A mixture of 2 percent is safe.
No, I would never use any stop leak chemical like that.
Sodium > Aluminum > Chlorine > Sulfur. Atomic size generally increases as you move down a group on the periodic table and decreases as you move across a period from left to right. Sodium is in the same period as chlorine but is a metal, so it has a larger atomic size. Aluminum is in the same period as sulfur but is a metal, so it has a larger atomic size. Chlorine is a non-metal and smaller than both aluminum and sodium. Sulfur is a non-metal and the smallest among the four elements listed.
Any company that makes cardboard boxes uses sodium silicate to seal their boxes. Sodium silicate is a glue; however, I would check with an automotive supplier of parts. They should have the properly sealer for a head gasket. The best and only way to cure a blown head gasket is to replace it with a new one. by cobbling it up with sodium silicate you are just prolonging the problem and maybe causing more damage. antifreeze will destroy your engines bearings if it gets into your oil which in turn ruins the crank. you should also get the head magna fluxed for cracks and checked for straightness. be sure to check the blocks deck to make sure its clean & straight as well.
Aluminum oxide would have a higher melting point than sodium chloride. This is because aluminum oxide has stronger bonds between its ions, resulting in a higher energy requirement to break these bonds compared to the weaker bonds in sodium chloride.
Your automobile MUST be running and you pour the sodium silicate into the radiator, allow it to circulate and flow through the areas needed. The high temperature's will cause it to harden (like glass). "This technique works because at 210-220 °F the sodium silicate loses water molecules to form a very powerful sealant that will not re-melt below 1500 °F." A sodium silicate repair of a leaking head gasket can hold for up to two years and even longer in some cases. The effect will be almost instant, and steam from the radiator water will stop coming out the exhaust within minutes of application. This repair only works with water to cylinder or water to Air applications and where the sodium silicate reaches the "conversion" temperature of 210-220 °F. I would highly suggest disconnecting your heater just to be on the safe side. To prevent it blocking the heater core.
The word would be talc. Talc is made of magnesium silicate.
The melting point of sodium chloride is 801 0C. The melting point of aluminium oxide is 2 072 0C.
If you remove the head then of course you replace the head gasket.Where can you get sodium silicate to fix a blown head gasket?Know that adding sodium silicate to an engine is only a temporary fix for a blown head gasket and will not permantly fix the problem. The only permanent fix is to replace the head gasket. I would never add any head gasket fix material to any engine.
Ferrous metals are metals with a trace of iron in them. Some examples of ferrous metals would be steel, pig iron and other alloys, for example stainless steel. Ferrous metals are known for their magnetic properties.
A rock that contains all of those elements would likely be a type of granite. Granite is a common rock type that is composed of minerals such as quartz (silicon and oxygen), feldspar (aluminum, potassium, calcium), and biotite (iron, magnesium, titanium). Sodium is typically found in trace amounts in many rocks, including granite.
feldspars. feldspars.
There are several metals that react with Aluminum Nitrate in a single displacement reaction. Aluminum is relatively reactive, but the most reactive metals are Potassium (K), Sodium (Na), Lithium (Li), Strontium (Sr), Calcium (Ca) and Magnesium (Mg). Those will all displace Aluminum in Aluminum Nitrate.