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Ammonium oxalate

Chemical terminology

Ammonium oxalate is a kind of Inorganic , the chemical formula is (NH four ) two C two O four , soluble in water, slightly soluble in ethanol 。 The aqueous solution is acidic. In the laboratory, ammonium oxalate can be mixed with calcium and magnesium in solution plasma Generate precipitation, and remove calcium Magnesium ion 。

Chinese name: Ammonium oxalate^[1]
Foreign name: ammonium oxalate^[1]
chemical formula: (NH four ) two C two O four
Water solubility: Soluble in water, Slightly soluble In ethanol

Density: 1.50 g/cm³
Appearance: Colorless columnar or white granular crystal
Application: Safety explosives, analytical reagents
Relative molecular weight: one hundred and twenty-four point zero nine six^[1]

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Material introduction

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[Chinese name] Ammonium oxalate^[1]

[English name] ammonium oxalate

[Molecular formula] (NH four ) two C two O four

【 Relative molecular weight or Atomic weight 】124.10

Structural

【 molecular structure 】

[Density] 1.50

【CAS】1113-38-8^[1]

[Character] Colorless and odorless, square crystal , Poisonous!

【 chemical property 】On Dehydrating agent Phosphorus pentoxide Under the action of Toxic gas Cyanide.

Ammonium oxalate thermal decomposition generate oxalate And release ammonia gas:

(NH four ) two C two O four → H two C two O four + 2NH three ↑ [Dissolution]

Soluble in water, slightly soluble in ethanol. The aqueous solution is acidic.

Substance use

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Used to make Safety explosive And supply Analytical reagent Etc. In the laboratory, ammonium oxalate can precipitate with calcium and magnesium plasma in the solution, and remove calcium and magnesium ions in the solution by filtration.

Used as analytical reagent and organic synthesis intermediate.

Substance preparation

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from ammonia And oxalate It is made by action.

It is prepared by the reaction of ammonia and oxalic acid, and the reaction formula is:

H2C2O4 + 2NH three ·H two O → (NH four ) two C two O four + 2H two O

Physicochemical properties

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Ammonium oxalate

1. Colorless columnar or white granular crystals. Odorless.

2. 1g of the product is soluble in 20mL water, 2.6mL boiling water, slightly soluble in ethanol, insoluble in ammonia.

3. Its solution is neutral (0.1 mol/L PH 6.4).

4. Dehydrate when heated to 95 ℃, add High fever That is decomposition.

Density 1.50. Colorless columnar crystal. relative density 1.501, Refractive index 1.439。 Soluble in 20 parts cold water, 2.6 parts boiling water, slightly soluble in ethanol, insoluble in ammonia. It is odorless and decomposes upon heating. Water solubility soluble

Safety terminology

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S24/25Avoid contact with skin and eyes.

Avoid contact with skin and eyes.

Risk terminology

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R21/22Harmful in contact with skin and if swallowed.

Harmful in contact with skin and if swallowed.

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