Ammonium acetic acid (ammonium acetate), CH3COONH4
Colorless crystalline mass, consisting of extremely hygroscopic crystals in the form of needles. At temperatures above 144 ° C, the reagent decomposes with the formation of acetamide:
NH4CH3COO = CH3CONH2 + H2O
It dissolves extremely easily in water (58.6% at 4 ° C), soluble in ethyl alcohol.
Often cited as an example of salt decomposition at low temperatures (which is not so common). Molar mass: 77.0825 g / mol. Density: 1.17 g / cm³. Melting point: 114 ° C.
This chemical can be obtained by reacting acetic acid with ammonium. Ammonium acetic acid is extracted in laboratory studies as follows: a 10% NH4OH solution is added to 80% CH3COOH with gradual cooling with water until the liquid acquires a strong ammonia odor. After that, the solution is placed in special filters, and, if necessary, evaporated in a water bath.
plastic bags 1 kg, bags 25 kg.
May irritate the mucous membranes of the upper respiratory tract.
When working with the drug, use individual protective equipment (respirator, rubber gloves, goggles), as well as observe the rules of personal hygiene. The premises should be equipped with general supply and exhaust ventilation; analysis of the drug in laboratories must be carried out in a fume hood.
Transportation and storage:
They are transported by all types of transport in accordance with the rules for the carriage of goods in force for this type of transport. The drug is stored in the manufacturer's packaging in covered warehouses. The guaranteed shelf life is 1 year.
- in analytical chemistry;
- in organic synthesis;
- as a component of buffer solutions;
- as a mordant for dyeing wool;