The caustic soda is then exposed to the power plant's exhaust, where it combines with carbon dioxide to create, over two steps, sodium carbonate and then sodium bicarbonate.

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It's a mixture of water, coconut by-products, sodium carbonate and water-soluble silicone, blended with the notion that eco-sensitive customers will gladly substitute some elbow grease for a garden hose.

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Oh, and FMC owns a soda ash mine in Wyoming, digging the commodity (a.k.a. sodium carbonate) out of the ground at a fraction of the cost of manufactured soda ash.

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They boil the cocoons in a solution of sodium carbonate to separate a protein called fibroin, which is the one they want, from another, called sericin, which they do not.

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The sodium hydroxide to carbonate then electrolysing to produce CO2: that looks a bit odd but is sensible enough.

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The remainder will end up in salt ponds where various compounds -- sodium chloride, gypsum, calcium carbonate -- can be extracted and potentially commercialized.

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