colorless crystalline substance
| Parameter name | Value |
|---|---|
| Total alkalinity, min | 42,0% |
| Ash content, max | 0,008% |
| Chloride content, max | 0,001% |
| SO4 content, max | 0,007% |
| Pb content, max | 0,0004% |
| As content, max | 0,0002% |
| Fe content, max | 0,0005% |
Not stable in the open air and in contact with liquids. It turns into hydrocarbonate with the release of ammonia.
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Yes, these are names for the same substance with the formula (NH₄)₂CO₃. The name “ammonium carbonate” may also appear in documents. When purchasing, it is important to check not only the name but also the product grade, compliance with GOST 3770-75, total alkalinity indicators, ash content, chlorides, sulfates, iron, lead and arsenic.
Ammonium carbonate is unstable in open air and on contact with moisture, so it can gradually decompose, releasing ammonia. This explains the characteristic ammoniacal smell that may be noticeable when opening the packaging or working with the product. For an enterprise, this is an important storage and handling factor: the container should not be left open, and decanting operations are best performed in a ventilated area. If the smell suddenly intensifies, the packaging is damaged, or the product’s appearance has noticeably changed, the batch should be additionally checked before use.
When receiving a batch of pure-grade ammonium carbonate, the packaging integrity, labelling, production date, quality certificate and compliance of the actual indicators with the purchase requirements are checked. Special attention is paid to total alkalinity, ash content, chlorides, sulfates, iron, lead, arsenic and the product’s appearance. The substance should remain uniform, without obvious contamination, wetting or foreign inclusions. If the raw material is purchased regularly, it is advisable to record the results of incoming inspection for each batch to track supply stability.
Pure-grade ammonium carbonate is stored in sealed factory packaging, in a dry, ventilated, unheated room, separately from moisture and substances that could cause undesirable reactions. The product should not be kept in an open container, since contact with air and water accelerates decomposition and can lead to loss of some properties. Packages are placed to prevent wetting, damage and mixing of batches without labelling. For a wholesale buyer it is important to preserve the quality certificate, batch traceability and stable warehouse conditions until the raw material is transferred into use.
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