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Potassium carbonate is the inorganic compound with the formula K2CO3. It is a white salt, which is soluble in water. It is deliquescent, often appearing as a damp or wet solid. Potassium carbonate is mainly used in the production of soap and glass.

Applications
- for soap, glass, and dishware production
- as a mild drying agent where other drying agents, such as calcium chloride and magnesium sulfate, may be incompatible. It is not suitable for acidic compounds, but can be useful for drying an organic phase if one has a small amount of acidic impurity. It may also be used to dry some ketones, alcohols, and amines prior to distillation.

- in cuisine, where it has many traditional uses. It is an ingredient in the production of grass jelly, a food consumed in Chinese and Southeast Asian cuisines, as well as Chinese hand-pulled noodles and mooncakes. It is also used to tenderize tripe. German gingerbread recipes often use potassium carbonate as a baking agent, although in combination with hartshorn. Use of potassium carbonate must be limited to a certain amount to prevent harm, and should not be used without guidance.

- as a buffering agent in the production of mead or wine.
- in antique documents, it is reported to have been used to soften hard water.
- as a fire suppressant in extinguishing deep-fat fryers and various other B class-related fires.
- in condensed aerosol fire suppression, although as the byproduct of potassium nitrate.
- as an ingredient in welding fluxes, and in the flux coating on arc-welding rods.
- as an animal feed ingredient to satisfy the potassium requirements of farmed animals such as broiler breeder chickens.

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Silver nitrate is an inorganic compound with chemical formula AgNO3. This salt is a versatile precursor to many other silver compounds, such as those used in photography. It is far less sensitive to light than the halides. It was once called lunar caustic because silver was called luna by ancient alchemists who associated silver with the moon. In solid silver nitrate, the silver ions are three-coordinated in a trigonal planar arrangement.

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Sodium fluorosilicate is a compound with the chemical formula Na2[SiF6].

It is used in some countries as additives for water fluoridation, opal glass raw material, ore refining, or other fluoride chemical (like sodium fluoride, magnesium silicofluoride, cryolite, aluminum fluoride) production.

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Calcium fluoride is the inorganic compound with the formula CaF2. It is a white insoluble solid. It occurs as the mineral fluorite (also called fluorspar), which is often deeply coloured owing to impurities.

Calcium fluoride, 98%+ Cas 7789-75-5 - used to manufacture optical components such as windows and lenses, used in thermal imaging systems, spectroscopy, and excimer lasers.

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Sodium hexafluoroaluminate is a biochemical for proteomics research. It is used as a flux agent or bath material by aluminum smelters in the production of aluminum. It is also used in the production of synthetic resins for abrasives and in the manufacture of cutting or grinding discs. Minor uses are as a coloring agent (opacifier) in the glass, ceramic and pyrotechnic industries. It occurs naturally as the mineral cryolite, which is used extensively in the industrial production of aluminium.

Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Store at room temperature.

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Zirconium silicate, also zirconium orthosilicate, ZrSiO4, is a chemical compound, a silicate of zirconium. It occurs in nature as zircon, a silicate mineral. Powdered zirconium silicate is also known as zircon flour.

Zirconium silicate is usually colorless, but impurities induce various colorations. It is insoluble in water, acids, alkali and aqua regia. Hardness is 7.5 on the Mohs scale.

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Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water. Solutions of HF are colourless, acidic and highly corrosive. It is used to make most fluorine-containing compounds; examples include the commonly used pharmaceutical antidepressant medication fluoxetine (Prozac) and the material PTFE (Teflon). Elemental fluorine is produced from it. It is commonly used to etch glass and silicon wafers.

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Zinc selenide (ZnSe) is a light-yellow, solid compound comprising zinc (Zn) and selenium (Se). It is an intrinsic semiconductor with a band gap of about 2.70 eV at 25 °C (77 °F). ZnSe rarely occurs in nature, and is found in the mineral that was named after Hans Stille called "stilleite."

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Cerium(IV) oxide, also known as ceric oxide, ceric dioxide, ceria, cerium oxide or cerium dioxide, is an oxide of the rare-earth metal cerium. It is a pale yellow-white powder with the chemical formula CeO2. It is an important commercial product and an intermediate in the purification of the element from the ores. The distinctive property of this material is its reversible conversion to a non-stoichiometric oxide.

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