Ferric alum appears as a white powder or crystalline. The crystalline and powder forms of the substance are soluble in water. However, it is not soluble in organic solvent such as ethanol. When in water, the solution appears clears and does not form a residue. Both of them are not toxic and do not catch flames. However, it can present an environmental hazard if spread in a large area.
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Polyaluminium Chloride is a yellow or light-yellow powder. It is tasteless, harmless and non-toxic when in contact with humans or aquatic life. The substance dissolves in water with ease and can even absorb water from the atmosphere.
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The substance is not reactive with most of the naturally occurring elements. However, it reacts with sodium bicarbonate to form a thick blanket of carbon dioxide. A foam stabilizer is added to the reaction to create a viable carbon dioxide layer that can effectively lock out oxygen from the burning material. This is the most common substance in many fire extinguishers used in Japan and India.
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The substance is not reactive with most of the naturally occurring elements. However, it reacts with sodium bicarbonate to form a thick blanket of carbon dioxide. A foam stabilizer is added to the reaction to create a viable carbon dioxide layer that can effectively lock out oxygen from the burning material. This is the most common substance in many fire extinguishers used in Japan and India.
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Copper sulfate is used in swimming pools as an algaecide. It is also used for the control of invasive plants in the pools and controls roots that may have punctured the piping system. Fish farmers use it to kill off the invasive types of snails in aquariums. However, its use in the aquarium is highly controlled, as it is toxic to fish in high quantities.
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