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ferrous sulfate

ferrous sulfate

Ferrous sulfate is an inorganic substance with the chemical formula FeSO4. It appears as a white powder with no odor. Its crystalline hydrate is heptahydrate at room temperature, commonly known as "green alum". It is a light green crystal that is weathered in dry air and oxidized to brown basic ferric sulfate on the surface in humid air. It becomes tetrahydrate at 56.6 ℃ and monohydrate at 65 ℃. Ferrous sulfate is soluble in water and almost insoluble in ethanol. Its aqueous solution slowly oxidizes in air when cold and rapidly oxidizes when hot. Adding alkali or exposure to light can accelerate its oxidation. Relative density (d15) 1.897. It is stimulating. Ferrous sulfate can be used as a chromatographic reagent for the determination of platinum, selenium, nitrite, and nitrate in drop analysis. Ferrous sulfate can also be used as a reducing agent, in the production of ferrites, in water purification, as a polymerization catalyst, in photographic plate making, and more.

Potassium borofluoride

Potassium borofluoride

Potassium fluoroborate, also known as potassium fluoroborate, has the chemical formula KBF4 and a molecular weight of 125.90. Potassium borofluoroate is white powder or gel crystal, slightly soluble in water and hot ethanol, and can be used as flux during welding.

Sodium silicate

Sodium silicate

Sodium silicate, commonly known as sodium silicate, is an inorganic substance with the chemical formula Na2O · nSiO2. Its aqueous solution is commonly referred to as water glass and is a mineral binder. Its chemical formula is Na2O · nSiO2, which is a soluble inorganic silicate with a wide range of applications.

barium sulfate

Barium sulfate, this product is a dual contrast agent for X-rays. It is a high-density gastrointestinal contrast agent that can be made into suspensions of different proportions for individual use, but is usually used together with low-density gas to achieve dual contrast imaging. Commonly used for gastrointestinal imaging, according to reports from domestic users, unevenly sized barium sulfate is superior to fine and uniform barium sulfate. Be cautious when used for the formation of intestinal fistulas and certain intestinal diseases that are prone to perforation, such as appendicitis, diverticulum, ulcerative colitis, parasitic infections, etc.

zinc sulfate

Zinc sulfate is an inorganic compound with the chemical formula ZnSO4, which is a colorless or white crystal, particle or powder. Zinc sulfate is mainly used as a raw material for the production of pigments such as lithopone, lithopone, and other zinc compounds. It is also used as a nutrient for animals with zinc deficiency, as a feed additive for animal husbandry, as a zinc fertilizer (trace element fertilizer) for crops, as an important material for artificial fibers, as an electrolyte for electrolytic production of metallic zinc, as a mordant in the textile industry, as a medical emetic, astringent, fungicide, and as a preservative for wood and leather.

Magnesium sulfate heptahydrate

Magnesium sulfate heptahydrate

Magnesium sulfate heptahydrate, also known as thiosulfate, bitter salt, laxative salt, or laxative salt, with a chemical formula of MgSO4 · 7H2O, is a white or colorless needle shaped or oblique columnar crystal, odorless, cool and slightly bitter. Heat decomposition gradually removes crystalline water and turns into anhydrous magnesium sulfate. Mainly used in the manufacturing of fertilizers, leather making, printing and dyeing, catalysts, papermaking, plastics, porcelain, pigments, matches, explosives, and fire-resistant materials. It can be used for printing and dyeing thin cotton fabrics and silk, as a weighting agent for cotton fibers and a filler for kapok products. In medicine, it is used as a laxative salt.

1,4-Butyrolactone

1,4-Butyrolactone

1,4-Butyrolactone, also known as gamma butyrolactone, is an organic compound with a chemical formula of C4H6O2 and a molecular weight of 86.089. It is a colorless and transparent liquid used in the production of drugs such as cyclopropylamine and pyrrolidone, as well as industrial solvents, diluents, curing agents, etc. It is classified as a Class III controlled precursor chemical.

Hydrobromic acid

Hydrobromic acid

An aqueous solution of hydrogen bromide gas. Has a stimulating sour taste. Slightly emitting smoke. When exposed to light, exposed to air, or stored for a long time, it gradually turns yellow to brown. Has strong reducibility. Can react with methyl to form bromomethane, react with base to form bromide, and react with amine to form hydrobromide. Can be miscible with water and ethanol. Relative densities of 1.49 (47%) and 1.38 (40%). Melting point -87 ℃ (anhydrous). Boiling point -67 ℃ (anhydrous), 126 ℃ (47.5%). Refractive index (n20D) 1.438. It has strong corrosiveness.

PTA terephthalic acid

PTA terephthalic acid

Terephthalic acid, also known as p-phthalic acid, is a high-yield dicarboxylic acid mainly produced from p-xylene and is the main raw material for producing polyester. Solid at room temperature. Heating does not melt, sublimates above 300 ℃. If heated in a closed container, it can melt at 425 ℃. Difficult to dissolve in water at room temperature. Mainly used for manufacturing synthetic polyester resins, synthetic fibers, plasticizers, etc.

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