colorless slightly hygroscopic crystals.
| Content of main substance,% min |
99,5 |
| Moisture,% max. |
1,0 |
| Mass fraction of sodium chloride,% max. |
0,18 |
| Mass fraction of iron,% max. |
0,0002 |
| Heavy metals mass portion,% max. |
0,0005 |
| Mass fraction of substances insoluble in water,% max. |
0,02 |
| Mass fraction of carbonates,% max. |
0,005 |
| Sulfate,% max. |
0,02 |
| pH, max. | 6,0 |
Ammonium chloride has the technical name of ammonia.
Does not melt when heated.
Easily soluble in water.
Hygroscopic (it absorbs moisture from the air well) - it should be stored in dry rooms.
When ignited, pairs of ammonia and thick white smoke are emitted (the main property for pyrotechnics).
In some European countries it is used as a seasoning.
Another name is Nashatyr.
In ancient Egypt, in the temple of the god Amon, it was intended to inhale the vapors of an aqueous solution of a special powder obtained from the walls of caves. The solution was called "Nushadira", eventually this name was transformed into ammonia - an aqueous solution of Ammonium Chloride.
In ancient Greece and Egypt used for medical purposes.
For prolonged contact Ammonium chloride may cause irritation of the skin and mucous membranes.
The most dangerous pairs of aqueous solution - gaseous ammonia - causes irritation of the respiratory tract and mucous membranes. With increased concentration has an exciting effect on the central nervous system.
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Yes, these are the same substance with the formula NH₄Cl. In commercial documents the name “ammonium chloride” is used. When purchasing, it is important to check not only the name but also the mass fraction of the main substance, moisture content, sodium chloride content, iron, heavy metals, sulfates, carbonates and insoluble impurities. For an enterprise, these indicators matter for incoming batch inspection and stable dosing of the raw material.
An ammonium chloride solution usually has a slightly acidic reaction, and in the batch specification the pH may be limited to a regulated value. The actual figure depends on the concentration of the solution, water quality and impurities in the product. If ammonium chloride is used in a sensitive process, it is better to check the pH in the laboratory on a solution of the required concentration rather than relying only on reference data. This allows deviations to be identified in advance and instability in the subsequent production cycle to be avoided.
Ammonium chloride 99.5% is stored in a dry, unheated room, in sealed factory packaging, on pallets and protected from moisture. Although the product is considered weakly hygroscopic, if storage conditions are violated it can clump, become contaminated and harder to dose. For a wholesale batch it is important to preserve labelling, quality certificate, production date and bag integrity. Residues from different batches should not be mixed without verification if the product is used in a process with strict purity requirements.
The shelf life of ammonium chloride 99.5% is stated by the manufacturer in the quality certificate and depends on compliance with storage conditions. For product stability, a dry warehouse, sealed packaging, and absence of wetting, contamination and packaging damage are important. Even if the substance retains its chemical properties beyond the guaranteed period, before using an expired or damaged batch it is better to check the free-flowing quality, solubility, moisture content and compliance with the main specification indicators.
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