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Malonic acid

Malonic acid, also known as malic acid. Molecular formula HOOCCH2COOH. Calcium salts exist in the roots of sugar beets, and the scale deposited in the concentration tank of sugar beet production is called calcium malonate. Malonic acid is a colorless sheet-like crystal; Melting point 135.6 ℃, decomposition at 140 ℃, density 1.619 g/cm3 (16 ℃); Can dissolve in water, alcohol, and ether. Can dissolve in acetone and pyridine.

copper sulphate

copper sulphate

Copper sulfate, an inorganic compound with the chemical formula CuSO4. It is a white or off white powder. The aqueous solution is weakly acidic and appears blue. But when crystallized from an aqueous solution, blue copper sulfate pentahydrate (CuSO4 · 5H2O, also known as bilite) is generated, which can be used to test the presence of water. After losing its crystalline water due to heat, it decomposes and is very stable at room temperature and pressure, without deliquescence. It will gradually weather in dry air. Copper sulfate is an important raw material for the preparation of other copper containing compounds. Mixing with lime milk can produce Bordeaux mixture, which can be used as a fungicide. Also used as an electrolyte for electrolytic refining of copper.

Potassium dihydrogen phosphate

Potassium dihydrogen phosphate

Potassium dihydrogen phosphate, an inorganic compound, appears as a white crystalline or amorphous white powder, easily soluble in water. The aqueous solution is slightly alkaline and slightly soluble in alcohols. It has hygroscopicity and self dissolves at high temperatures. At a relative density of 2.338204 ℃, the molecules undergo dehydration and conversion to potassium pyrophosphate. The pH value of a 1% aqueous solution is 8.9. Mainly used in medicine, fermentation, bacterial culture, and the production of potassium pyrophosphate.

Potassium dihydrogen phosphate

Potassium dihydrogen phosphate

Potassium dihydrogen phosphate is a chemical with the chemical formula KH2PO4. Has deliquescence. When heated to 400 ℃, it melts into a transparent liquid and solidifies into an opaque glassy potassium metaphosphate after cooling. Stable in air, soluble in water, insoluble in ethanol. Used as buffering agents and culture agents in industry; It is also used as a seasoning for the synthesis of sake as a bacterial culture agent, a raw material for the production of potassium metaphosphate, a culture agent, fortifier, leavening agent, and fermentation aid for brewing yeast. Used as a high-efficiency phosphate potassium compound fertilizer in agriculture.

2-pyrrolidone

Alpha pyrrolidone is an important chemical raw material and strongly polar organic solvent, widely used in industries such as pharmaceuticals, textiles, cosmetics, solvents, and electronic cleaning.

N-methylpyrrolidone

N-methylpyrrolidone

NMP belongs to nitrogen heterocyclic compounds and has a series of excellent physical and chemical properties. It is a non-toxic, high boiling point, strong polarity, low viscosity, low corrosiveness, high solubility, low volatility, good stability, and easy to recover high-efficiency selective solvent.

aniline

It is a compound formed by replacing one hydrogen atom in a benzene molecule with an amino group. Its physical properties are colorless or slightly yellow oily liquid, with a strong odor. Its chemical properties are alkaline, and it can react with hydrochloric acid to form a hydrochloride salt, and with sulfuric acid to form a sulfate salt. Aniline turns brown when exposed to air or sunlight. Steam distillation can be used, and a small amount of zinc powder can be added during distillation to prevent oxidation. The purified aniline can be added with 10-15 ppm NaBH4 to prevent oxidation and deterioration.

Triethylamine

A type of amine organic compound, systematically named N, N-diethylethylamine, is a colorless transparent liquid with a strong ammonia odor and emits a slight smoke in the air. Slightly soluble in water, soluble in ethanol and ether. The aqueous solution is weakly alkaline. Flammable and explosive. Toxic and highly irritating.

One isopropylamine

One isopropylamine

Solvent. Organic synthesis. Emulsifier. Rubber vulcanization accelerator. Insecticide. Hair removal agent. Surfactants. 2,4 drops of solubilizer. Used for the production of pesticides, drugs, vulcanization accelerators, as well as hard water treatment agents, descaling agents, etc. Mainly used for pesticide, pharmaceutical, dye, and rubber processing.

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