Also known as carbamide, is an organic compound of carbon, nitrogen, oxygen and hydrogen, with the formula CON2H4 or (NH2)2CO.
Urea is produced commercially from two raw materials, ammonia and carbon dioxide. Large quantities of carbon dioxide are produced during the manufacture of ammonia from coal or from hydrocarbons such as natural gas and petroleum derived raw materials. This allows direct synthesis of urea from these raw materials.
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 can be used on virtually all crops. 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. Urea is also highly water soluble so it moves readily into the soil. The high analysis means a reduced transportation and application cost per kilogram of nitrogen.
Urea is a nitrogen-containing chemical product which is produced in excess of 140,000,000 tons per year worldwide, of which more than 90% of world production is destined for use as a fertilizer.
Urea is produced commercially from synthetic ammonia and carbon dioxide. Urea can be produced as prills, granules, flakes, pellets, crystals and solutions.
Urea has the highest nitrogen content of all solid nitrogeneous fertilizers in common use (46.4%N.) which is the highest concentration dry nitrogen fertilizer available. It therefore has the lowest transportation costs per unit of nitrogen nutrient.
Urea is highly soluble in water and is therefore also very suitable for use in fertilizer solutions (in combination with ammonium nitrate: UAN), e.g. in “foliar feed’ fertilizers.
Solid urea is marketed as prills or granules. The advantage of prills is that in general they can be produced more cheaply than granules which, because of their narrower particle size distribution have an advantage over prills if applied mechanically to the soil. Properties such as impact strength, crushing strength and free-flowing behaviour are particularly important in product handling, storage and bulk transportation.
Urea’s commercial uses include:
As a component of fertilizer and animal feed, providing a relatively cheap source of fixed nitrogen to promote growth.
As a raw material for the manufacture of plastics specifically, urea-formaldehyde resin.
As a raw material for the manufacture of various glues (urea-formaldehyde or urea-melamine-formaldehyde). The latter is waterproof and is used for marine plywood.
As an alternative to rock salt in the deicing of roadways and runways. It does not promote metal corrosion to the extent that salt does.
As an additive ingredient in cigarettes, designed to enhance flavour.
Sometimes used as a browning agent in factory-produced pretzels.
As an ingredient in some hair conditioners, facial cleansers, bath oils and lotions.
It is also used as a reactant in some ready-to-use cold compresses for first-aid use, due to the endohermic reaction it creates when mixed with water.
Active ingredient for diesel engine exhaust treatment AdBlue and some other SCR systems.
Used, along with salts, as a cloud seeding agent to expedite the condensation of water in clouds, producing precipitation.
The ability of urea to form clathrates (also called “loose compounds” host-guest complexes, inclusion compounds, and adducts) was used in the past to separate paraffins.
As a flame-proofing agent.
As a clean burning fuel for motor vehicles and stationary engines.
As a NOx-reducing reactant in diesel exhaust.
Specifications for Prilled Urea 46%N:
Nitrogen: 46.0% min.
Moisture: 0.3% max.
Biuret: 1.0% max.
Granulation: 1 – 4 mm 90-94% min.
Melting Point: 132 Degrees Celsius
Colour: Pure White Prilled
Free Ammonia: 160pxt ppm max.
Prilled, Free Flowing, Treated against caking, 100% free from harmful substances.
Specifications for Granular Urea 46%N:
Nitrogen: 46.0% min.
Moisture: 0.5 % max.
Biuret: 1.4% max.
Granulation: 2 – 4 mm 90-94% min.
Melting Point: 132 Degrees Celsius
Colour: Standard White or Pure White
Free Ammonia: 160pxt ppm max.
Free Flowing, Treated against caking, 100% free from harmful substances.
Urea is sold in shipload quantities (minimum 12,500 mt). We ship the product in three (3) modes:
Bulk (loose in shiploads)
Bulk in 1 ton, 1.5 mt, or 2 mt woven polypropylene Jumbo Bulker Bags
50 kg “poly” Bags wet proofed for ocean freight/shipping new 2 ply woven bags, polypropylene outside and polyethylene inside
The Buyer must descript the packing or packaging method in the delivery schedule within thirty (30) days of signing the contract. Any changes to these initial packing or packaging instructions thereafter can only be done with sixty (60) days notice prior to the scheduled shipment.
Packaging in 50 kg bag will have markings using English Language of seven (7) lines in black colour on one side with the word “UREA” to be printed in double size of other six (6) lines. Price includes cost of custom artwork and lettering on bags, however Buyer to provide draft wording and logo artwork. Sample as below:
NITROGEN 46.0% MIN
BIURET 1.0% MAX
MOISTURE 0.5% MAX
USE NO HOOKS
COUNTRY OF ORIGIN
Two percent (2%) extra new correctly marked 50 kg bags to be supplied free of charge to the Buyer.
In order for us to solicit prospective clients and to quote prices we therefore need to have the technical details of all products that they require listing the percentage of each essential element present in each blend. In other words the clients will know exactly the technical structure of each of the many blends and the exact percentage of each essential and minor element that need to be blended to suit the range of agricultural situations.
We are direct to one of the TOP suppliers in China and our products are NPK water soluble, MAP (Mono-Ammonium Phosphate), MAP (Mono-Ammonium Phosphate) AG, MAP (Mono-Ammonium Phosphate) tech grade, MKP (Mono Potassium Phosphate), FMP (Fused Magnesium Phosphate), SSP (Single Super Phosphate), DCP (Dicalcium phosphate), MDCP (Mono Dicalcium Phosphate), MCP (Mono Calcium Phosphate), MSP (Monosodium Phosphate), Resorcinol, EDTA & EDDHA micronutrients fertilizers, and TCP (Tri Calcium Phosphate).
We have put together some facts about fertilizers and also some technical explanations of some of the elements present in their products.
Modern chemical fertilizers include one or more of the three elements most important in plant nutrition:
Nitrogen (N) – Phosphorus (P) – Potassium (K)
In fact, with most fertilizers, the analysis of the approximate nutrient content is usually expressed as a percentage called the N.P.K. ratio. For example
Nitrogen (N) – Phosphorus (P) – Potassium (K) (N) (P) (K)
Fowl manure is: 2.1: 1.6: 1.0
Cow manure is: 1.0: 0.4: 0.5
NPK 15.0: 15.0: 15.0
16.0: 16.0: 16.0
17.0: 17.0: 17.0
19.0: 19.0: 19.0
20.0: 20.0: 20.0
MAP (Mono-Ammonium Phosphate) 11.0: 44.0: 0.0
MAP (Mono-Ammonium Phosphate) AG 12.0: 52.0: 0.0
MAP (Mono-Ammonium Phosphate) Tech. 12.0: 61.0: 0.0
MKP (Potassium Phosphate Monobasic) 0.0: 52.0: 34.0
Lawn Fertilizer or for leafy crops such as cabbages etc.
which take a lot of Nitrogen out of the soil: 17.0: 0.5: 5.0
Water soluble fertilizers Thrive and Zest: 31.0: 5.0: 9.0
Urea: 46.0: 0.0: 0.0
Elements of secondary importance: Sulphur (S) – Magnesium (Mg) – Calcium (Ca)
Other elements needed in small quantities that may be present in specially blended fertilizers include:
Silicon (Si) – Iron (Fe) – Chlorine (Cl)
Elements in trace amounts may be: Boron (B) – Copper (Cu) – Manganese (Mn) – Molybdenum (Mo) – Zinc (Zn)
NITROGEN fertilizers are mostly obtained from synthetic ammonia, used either as a gas or in water solution, or converted into salts such as Ammonium Sulphate, Ammonium Nitrate, and Ammonium Phosphate; but packinghouse wastes, treated garbage, sewage, manure, and cottonseed meal are also common sources.
PHOSPHORUS fertilizers include Calcium Phosphate from phosphate rock or bones.
The water soluble Superphosphate and Triple Superphosphate are obtained by treatment of Calcium Phosphate with Sulphuric Acid and Phosphoric Acid respectively.
POTASSIUM fertilizers, namely Potassium Chloride and Potassium Sulphate, are mined from potash deposits.
Blended fertilizers are usually packaged in 50 kg bags but still only sold in large quantities. So we mainly ship in ISO Containers. Please check with us in early stage of negotiation.