Properties of urea
Urea, also known as carbamide, carbamide and urea. Pure urea is white, tasteless, odorless, needle shaped or prismatic crystal, with a melting point of 132.7 â?? under normal pressure. It is hygroscopic, deliquescent, hydrolyzable, and weakly alkaline. It is made into compound fertilizer with acid fertilizer. Urea is an organic compound composed of carbon, nitrogen, oxygen and hydrogen. It is a white crystal. Urea is one of the simplest organic compounds. The most important use of urea is as fertilizer. Its nitrogen content is more than 46%. After being converted into ammonium carbonate in soil, urea is hydrolyzed and absorbed by plants. It is the nitrogen fertilizer with the highest nitrogen content at present.
Molecular formula of urea: CO (NH2) 2, molecular weight 60.06, density 1.335g/cm �³ï¼? The melting point is 132.7 â??. Soluble in water and alcohol, insoluble in ether and chloroform. It is slightly alkaline. It can react with acid to form salt. It has hydrolysis. Condensation reaction can be carried out at high temperature to produce biuret, triuret and cyanuric acid. Heat to 160 â?? and decompose to generate ammonia gas and turn into cyanic acid at the same time. Urea can be hydrolyzed into ammonia and carbon dioxide under the action of acid, alkali and enzyme (acid and alkali need to be heated). Unstable to heat, heat to 150 â??ï½? 160 â?? to deamination to biuret. Urea is easily soluble in water, 105g can be dissolved in 100ml water at 20 â??, and the aqueous solution shows neutral reaction. There are two kinds of urea products: crystalline urea is white acicular or prismatic crystal with strong hygroscopicity; Granular urea is a translucent particle with a particle size of 1~2mm, which has a smooth appearance and improved moisture absorption.
Urea is a physiologically neutral fertilizer, which does not leave any harmful substances in the soil and has no adverse effects after long-term application. However, a small amount of biuret, also known as biuret, will be produced when the temperature is too high during granulation, which has an inhibitory effect on crops. Urea is molecular before conversion and cannot be adsorbed by soil, so it should be prevented from being lost with water; The ammonia formed after conversion is also volatile, so urea should also be deeply covered with soil. Urea is the first synthetic organic substance and widely exists in nature, such as 0.4% urea in fresh human feces.
The new version of national standard GB/T2440-2017 for urea has been officially implemented since July 1, 2018. Compared with the replaced 2001 standard, certain adjustments have been made.
New standard GB/T2440-2017
Total Nitrogen: 46%+
Granulometry: ~ 2 - 3.35 mm
Specifications: Free flowing, and free of any foreign matters.
Origin: Egypt
Packing: 25-50 kg pp bags, or in pp jumbo bags of 625 kg
Inspection: SGS
Urea 46% fertilizer is widely used in agriculture for several reasons, primarily owing to its high nitrogen content. Nitrogen is a crucial nutrient for plant growth, and it plays a central role in various physiological processes within plants.
We are the best Urea 46% supplier in PRILLED & GRANULAR. Minimum Quantity: 1,000 Metric Ton / Maximum Quantity: 50,000 Metric Tons. Container load's payment 30% advance and 70% at loading port, contract's payments DLC or SBLC Transferable. Please send us your LOI + CIS for FCO.
Automotive grade urea is a high-purity urea used primarily in diesel exhaust fluid (DEF) systems to reduce nitrogen oxide (NOx) emissions from diesel engines.
It is also known as AdBlue in Europe. This urea is dissolved in water to create a solution that is injected into the exhaust system, where it helps convert harmful NOx gases into harmless nitrogen and water vapor through a process called Selective Catalytic Reduction (SCR)
P. Urea is white, solid, odorless or slightly ammoniacal, water soluble, produced in both granular, prills, or pastilles with nitrogen content of %46 . Urea is the most popular and economical of all nitrogenous fertilizers being used worldwide, the highest nitrogen concentration in the available solid conditions.
PRICE: $375 MT
Maximum quantity: 25,000 MT
Origin: KAZAHSTAN/ RUSSIA
Contract period: personal collection
or monthly delivery
Packaging: Big-Bags
1000 kg
FOB: Primorye Ports
CIF: by contract
Please note that the contract price is quoted
at FOB Primorye ports
and may vary depending on the stock exchange price on the date of conclusion of the contract.
Commissions for intermediaries, agents and third parties are added independently by them.
