Urea 46% N Fertilizer

Quick Overview
Urea fertilizer provides nitrogen, which promotes green leafy growth that not only makes your garden look lush, but is also important for photosynthesis. Urea has a number of advantages over other nitrogen fertilizers. Urea is safer to ship and handle, it is less corrosive to equipment, it has a higher analysis than any


Urea, a white crystalline solid containing 46% nitrogen, is widely used in the agricultural industry as an animal feed additive and fertilizer Here we discuss it only as a nitrogen fertilizer.

Urea (46-0-0) usually has the lowest cost per pound of nitrogen compared to other single-element nitrogen fertilizers. However, urea undergoes unique chemical transformations when field applied and severe losses in efficiency may result if special management practices are not followed. The purpose of this fact sheet is to briefly describe urea transformations and to suggest how urea-N may be conserved with proper management in the field.

Fertilizer urea can be purchased as prills or as a granulated material. In the past, it was usually produced by dropping liquid urea from a “prilling tower” while drying the product. The prills formed a smaller and softer substance than other materials commonly used in fertilizer blends. Today, though, considerable urea is manufactured as granules. Granules are larger, harder, and more resistant to moisture. As a result, granulated urea has become a more suitable material for fertilizer blends.

Main specifications Norm
Urea Prilled Urea Granulated
Mass portion of nitrogen (N) on a dry basis, %min 46.2 46.2
Mass portion of biuret, %, max 1.0 1.0
Moisture (determined by Fischer method), % max: 0.5 0.5
Granulometry, % 2 to 5 mm – 95
1 to 4 mm 90 –
less than 1 mm – 2
more than 6 mm none None
Color white white
Static Strength – 2.5 kgs/granule
Product free flowing, free from dust and harmful substances Urea is a non-combustible, fire and explosion proof substance


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