Fact on Urea

Origin

UREA Fertiliser directly from some of the largest producers in the world, from locations such as Ukraine, Russia, and Lybia.

Description

Urea is a white crystalline substance with the chemical formula CO(NH2)2; it is highly water soluble and contains 46% nitrogen. Urea is considered an organic compound because it contains carbon. It was the first organic compound ever synthesized by chemists; this was accomplished in the early 1800s. Urea is now the major fertilizer traded in international commerce. It accounts for more than 50% of the nitrogen fertilizer in world trade, and when compared to other dry fertilizers, urea has captured more than 65% of the world trade. 

Process

Urea is manufactured synthetically by reacting natural gas, atmospheric nitrogen and water to produce carbon dioxide (CO2) with anhydrous ammonia (NH3). The carbon dioxide (CO2) with anhydrous ammonia (NH3) are then combined  under  3,000 psi pressure  and  at  350°F  to produce  molten  urea [CO2 + 2NH3 ­=> CO(NH2)2 + H2O]. The resulting molten mixture is further processed  and  dehydrated  to  produce  either  prills  or  granules.

Packaging 

(a) In 50 kg “poly” Bags water-proofed for ocean freight/shipping - new 2-ply woven bags  polypropylene outside and polyethylene inside, and then packed into shipping containers, OR,

(b)  40 such bags, palletized & sealed, packed in 2-ton Woven polypropylene jumbo sling bags (or 30 bags packed into 1.5-ton jumbo bags at Purchaser’s choice), and all jumbo bags shall be water-proofed with nylon shrink wrapping for ocean freight/shipping, and with strong handles for carrying purposes.

(c)  Typically, bags will be labeled in the English language indicating:  Net weight 50kg ; Prilled Urea (or Granular Urea); Country of Origin ; and no producer name.

Specifications

 

  Prilled Urea

 

  Granular Urea

 Nitrogen:

 46% min.

 46% min.

 Moisture:

 0.3% max.

 0.5% max.

 Biuret:

 1% max.

 1.4 % max.

 Particle size:

 1-2.8 mm   90% min

 2 - 4 mm  90% min.

 Melting Point:

 132 Degrees Celsius

 132 Degrees Celsius

 Colour:

 Pure White Prilled

 Standard White or Pure White

 Radiation:

 Non - Radioactive

 Non - Radioactive

 Free Ammonia:

 160pxt ppm max.

 160pxt ppm max.

 Treatment

 Prilled, Free Flowing, Treated against  caking, 100% free from harmful  substances

 Granular, Free Flowing, Treated  against caking, 100% free from  harmful substances

Use

 

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 other dry nitrogen fertilizer and it is suitable for virtually all crops, across a wide range of environmental conditions. Urea is 46% nitrogen, and this is the highest concentration dry nitrogen fertilizer available.  In summary, this means a reduced transportation cost as well as low application cost per kilogram of nitrogen. 

Urea can be stored and distributed through conventional systems. It can be applied in many different ways from sophisticated aerial application equipment to a farm spreading urea by hand. Broadcasting or in irrigation water (fertigation) is best if split-applied at least three times throughout the growing season, and should be incorporated into the soil. Urea is also highly water soluble so it moves readily into the soil where it is converted to ammonium (NH4) compounds by the action of urease, an enzyme present in the soil. This “ammonification” process is usually completed within a few days of urea application. Soil bacteria then convert the ammonium to nitrate (NO3-), and this “nitrification” process is usually completed within a few weeks of application.

Please note: The use of fertilisers is not the only factor involved in producing a top yielding crop or pasture. Local soil, climatic and other conditions should also be taken into account, as these will affect crop or pasture responses to any applied fertiliser.

Delphi.2000