True and false urea ingeniously distinguish
Urea is a commonly used fertilizer, and it's essential to distinguish genuine from fake products. True urea appears as white or slightly yellowish needle-like, shuttle-shaped, or round granular crystals. It has no taste and dissolves completely in water. If the product does not meet these characteristics, it is likely counterfeit.
To test for authenticity, you can mix a small amount of the sample with lime water. Genuine urea will not produce an ammonia smell, while other nitrogen-based fertilizers or substances may emit a distinct ammonia odor. This method helps identify whether the product contains additional nitrogen sources.
Another way to check is by burning. Take a few pieces of charcoal, a piece of iron, or a tile and heat them over fire. Then place a small amount of urea on the hot surface. When burned, true urea produces white smoke with a pungent ammonia smell and quickly turns into water. However, if the substance bubbles slightly, emits a "beep" sound, or releases a sharp, acrid odor, it may be mixed with ammonium sulfate, which indicates lower quality.
If the burning process emits a hydrochloric acid-like smell, it could mean that ammonium chloride is present. Additionally, if there is a slight flame during burning, it might suggest the presence of ammonium nitrate. These signs help identify adulterated or inferior urea products.
By performing these simple tests, you can better ensure the quality of the urea you are purchasing and using. Always verify the source and look for reliable certifications when buying fertilizers to avoid counterfeit or substandard products.
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