Industrial Grade High Quality Calcium Acetate White Powder

Product Information

Calcium Acetate is the acetate salt of calcium with the chemical formula C4H6CaO4.The common name for calcium acetate is calcium acetate. Anhydrous calcium acetate is very hygroscopic, so it is common to find calcium acetate as a monohydrate (Ca(CH3COO)2.H2O, CAS [5743-26-0]).
Preparation
1. It is obtained by neutralizing pyroligneous acid (wood acetic acid) with calcium hydroxide, taking its filtrate and evaporating it, and recrystallizing it;
2. It is obtained from the reaction of acetic acid with calcium hydroxide or calcium carbonate, filtered, concentrated and cooled to obtain dihydrate salt (colorless crystal), heated to 84℃ to obtain monohydrate salt (colorless crystal), heated to 100℃ to obtain anhydrous salt;
3. Shells as raw materials, after cleaning, crushing, drying 1h, grilled at 900 ~ l000 ℃ for 2h, and then add water to make 1.3 ~ 1.5mol / L of lime milk. Then it was neutralized with acetic acid until clarified, filtered, the filtrate was concentrated, and finally dried at 120~140°C to obtain the finished product with 91.28% yield.
In 20% acetic acid solution add calcium carbonate powder, until no longer escape CO2 gas, and then add a small amount of calcium carbonate, heated to 80 ℃ reaction 2 ~ 3h filtrate with a water bath heating and concentration, at the same time add a small amount of 80% acetic acid, that is, the precipitation of calcium acetate monohydrate (solution cooled precipitation of dihydrate), and finally in 60 ~ 70 ℃ under the drying of the finished product. The chemical equation is as follows:
2CH3COOH+CaCO3→(CH3COO)2Ca+H2O+CO2↑
4. Method of anhydrous calcium acetate: add refined powdered calcium carbonate to water, stir into suspension, and add a small amount of glacial acetic acid in stages. At the end of the reaction, the filtrate is concentrated on a water bath, and a white solid, i.e. anhydrous calcium acetate, is precipitated from the viscous filtrate;
5. Add 100g of calcium carbonate to 500-700mL of water to get the suspension. Add 110mL glacial acetic acid in small amounts under stirring one by one, and carbon dioxide gas was released. After the completion of the reaction, filtration, filtrate on a water bath to concentrate until the solution becomes thick, from the thick liquid precipitated white product, that is, anhydrous calcium acetate. If the mother liquor is left for a long time, the solid precipitated is calcium acetate monohydrate.

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(1)Water Treatment:Physical methods also include precipitation, is to let the impurities of smaller specific gravity float on the surface of the water to fish out, or the impurities of larger specific gravity precipitation in the lower, and then obtain. Chemical method is to use a variety of chemicals in the water impurities into less harmful substances, or impurities concentrated, the longest history of chemical treatment methods should be considered to be added to the water with alum, the collection of impurities in the water, the volume becomes larger, it can be used for filtration, the removal of impurities.

(2)Rubber Products:Rubber is a hot-soluble thermosetting elastomer, while plastics are hot-soluble cold-setting. Rubber because of the different types of vulcanizate body, its molding and curing temperature range, there is a considerable difference, and even due to climate change, indoor temperature and humidity affected. Therefore, the production conditions of rubber products need to be adjusted moderately at any time, if not, it may produce differences in product quality.

(3)Catalysts And Auxiliaries：Generally speaking, a catalyst is a substance that participates in the intermediate course of a chemical reaction and can selectively change the rate of the chemical reaction, while its own quantity and chemical properties remain basically unchanged before and after the reaction. Usually, the catalyst accelerates the chemical reaction, so that the reaction reaches the chemical equilibrium as soon as possible is called catalytic effect, but does not change the equilibrium of the reaction.

Additives are a variety of auxiliary chemicals that need to be added during the production or processing of certain materials and products in order to improve the production process and enhance the performance of the product required for a variety of auxiliary chemicals.