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Sodium Hypochlorite
Sodium hypochlorite is produced by the reaction of chlorine gas with sodium hydroxide. It has a variety of functions such as sterilization (its main mode of action is to form hypochlorous acid through hydrolysis, and then further decompose into new ecological oxygen, denaturating bacterial and viral proteins, thus playing a broad spectrum of sterilization), disinfection, bleaching and so on, and plays an important role in medical, food processing, water treatment and other fields.
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Magnesium Sulphate
A compound containing magnesium, a commonly used chemical and drying agent, consisting of the magnesium cation Mg2+ (20.19% by mass) and the sulfate anion SO2−4. White crystalline solid, soluble in water, insoluble in ethanol. Usually encountered in the form of the hydrate MgSO4·nH2O, for various n values between 1 and 11. The most common is MgSO4·7H2O.
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Citric Acid
It is an important organic acid, colorless crystal, odorless, has a strong sour taste, easily soluble in water, mainly used in food and beverage industry, can be used as sour agent, seasoning agent and preservative, preservative, can also be used in chemical, cosmetic industry as an antioxidant, plasticizer, detergent, anhydrous citric acid can also be used in food and beverage industry.
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Sodium Silicate
Sodium silicate is a kind of inorganic silicate, commonly known as pyrophorine. Na2O·nSiO2 formed by dry casting is massive and transparent, while Na2O·nSiO2 formed by wet water quenching is granular, which can be used only when converted into liquid Na2O·nSiO2. Common Na2O·nSiO2 solid products are: ① bulk solid, ② powdered solid, ③ instant sodium silicate, ④ zero water sodium metasilicate, ⑤ sodium pentahydrate metasilicate, ⑥ sodium orthosilicate.
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Boric Acid
It is a white crystalline powder, with a smooth feel and no odor. Its acidic source is not to give protons by itself. Because boron is an electron deficient atom, it can add hydroxide ions of water molecules and release protons. Taking advantage of this electron-deficient property, polyhydroxyl compounds (such as glycerol and glycerol, etc.) are added to form stable complexes to strengthen their acidity.
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Hydrofluoric Acid （HF）
It is an aqueous solution of hydrogen fluoride gas, which is a transparent, colorless, smoking corrosive liquid with a strong pungent odor. Hydrofluoric acid is an extremely corrosive weak acid, which is highly corrosive to metal, glass and silicon-containing objects. Inhalation of steam or contact with skin can cause burns that are difficult to heal. The laboratory is generally made of fluorite (the main component is calcium fluoride) and concentrated sulfuric acid, which needs to be sealed in a plastic bottle and stored in a cool place.
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Sodium Bisulfate
Sodium bisulphate, also known as sodium acid sulfate, is sodium chloride (salt) and sulfuric acid can react at high temperatures to produce a substance, anhydrous substance has hygroscopic, aqueous solution is acidic. It is a strong electrolyte, completely ionized in the molten state, ionized into sodium ions and bisulfate. Hydrogen sulfate can only self-ionization, ionization equilibrium constant is very small, can not be completely ionized.
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4A Zeolite
It is a natural alumino-silicic acid, salt ore in the burning, due to the water inside the crystal is driven out, producing a phenomenon similar to bubbling and boiling, which is called “boiling stone” in image, referred to as “zeolite”, used as a phosphate-free detergent auxiliary, instead of sodium tripolyphosphate; In the petroleum and other industries, it is used as a drying, dehydration and purification of gases and liquids, and also as a catalyst and water softener.
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Calcium Hydroxide
Hydrated lime or hydrated lime It is a white hexagonal powder crystal. At 580℃, the water loss becomes CaO. When calcium hydroxide is added to water, it is divided into two layers, the upper solution is called clarified lime water, and the lower suspension is called lime milk or lime slurry. The upper layer of clear lime water can test carbon dioxide, and the lower layer of cloudy liquid lime milk is a building material. Calcium hydroxide is a strong alkali, has bactericidal and anti-corrosion ability, has a corrosive effect on skin and fabric.
