Chemical for Mining Industrial : Aluminum Sulphate: Properties it is white or gray flake, particle or massive crystallization. Apt to cake after moisture absorption when laid in air for a long time. A little green because of Fe2+, yellow when Fe2+ isox ided to Fe3+. Soluble in water easily, and water solution is acid. Use mainly used in industrial water and waste water treatment.

Sodium Sulphide: Sodium Sulfide is a yellow to red solid; readily soluble in water, slightly soluble in alcohol. It is a strong reducing agent and reacts with oxidants. It is primarily used in pulp and paper industry. It is used in water treatment as an oxygen scavenger agent, in the photographic industry to protect developer solutions from oxidation, in textile industry as a bleaching, as a desulfurizing and as a dechlorinating agent and in leather trade for the sulfitization of tanning extracts. It is used in chemical manufacturing as a sulfonation and sulfomethylation agent. It is used in the production of rubber chemicals, sulfur dyes and other chemical compounds. It is use in other applications include ore flotation, oil recovery, food preservative, making dyes, and detergent.

Sodium Aluminium Fluoride: used as a solvent of the aluminum rich ore, bauxite, this is a combination of aluminum oxides such as gibbsite, boehmite and diaspore. It is very difficult to remove atoms of aluminum from atoms of oxygen which is necessary in order to produce aluminum metal.

Cryolite (Na3AlF6, sodium hexafluoroaluminate), made an excellent flux to make the process less expensive. Now it is too rare to be used for this purpose and sodium aluminum fluoride is produced artificially to fill the void. A curious note about cryolite is the fact that it has a low index of refraction close to that of water. This means that if emersed in water, a perfectly clear colorless crystal of cryolite or powdered cryolite will essentially disappear. Even a specimen of cloudy cryolite will become more transparent and its edges will be less distinct, an effect similar to ice in water except that the ice floats.

Sodium Hydrosulfide: Sodium hydrosulfide is the chemical compound with the formula NaSH. Other names include sodium bisulfide, sodium sulfhydrate, sodium hydrogen sulfide and Nash. This species is the product of the half -neutralization of hydrogen sulfide with a sodium-derived base. NaSH is a useful reagent for the synthesis of organic and inorganic sulfur compounds. It is a colorless solid that typically smells like H2S due to hydrolysis by atmospheric moisture. In contrast with Na2S, which is insoluble in organic solvents, NaSH, being a 1:1 electrolyte, is more soluble. Alternatively, in place of NaSH, H2S can be treated with an organic amine to generate an ammonium salt. Solutions of SH- are sensitive to oxygen, converting mainly to polysulfides, indicated by the appearance of yellow.

Hydrogen Peroxide: Hydrogen Peroxide is an environmentally friendly chemical used for oxidation reactions, bleaching processes in pulp, paper and textile industries, waste water treatment, exhaust air treatment and for various disinfection applications.

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