Ammonium nitrate is a salt, whereas urea is not. It is a carbamide (organic molecule). When dissolved in water ammonium nitrate produces an acidic solution. In contrast urea solutions are neither acidic nor alkaline.
Is UAN toxic?
When the water in UAN evaporates, it leaves a residue of solid ammonium nitrate and urea; solid ammonium nitrate can explode. Note: When no route specific LD50 data is available for an acute toxin, the converted acute toxicity point estimate was used in the calculation of the product’s ATE (Acute Toxicity Estimate).
Is urea ammonium nitrate hazardous?
Additional Hazards When Processed: When the water in UAN evaporates, residue may include solid ammonium nitrate and urea. When sensitized or during decomposition, solid ammonium nitrate may become unstable and/or explosive. Do not allow liquid to evaporate, as solid ammonium nitrate residue can explode.
What is UN32?
UAN is a solution of urea and ammonium nitrate in water used as a fertilizer. The most commonly used grade of these fertilizer solutions is UAN 32.0. 0 (32%N) known as UN32 or UN-32, which consists of 45% ammonium nitrate, 35% urea and only 20% water.
How is UAN 32 made?
The UREA/AMMONIUM NITRATE (UAN) solution is created by dissolution of the amide and nitrate salt in water. It may have a slight ammonia odor. Approximately 35% UREA blended with 45% AMMONIUM NITRATE makes a fertilizer solution that is 32% nitrogen by weight.
What are the numbers on ammonium nitrate fertilizer?
Fertilizer. Ammonium nitrate is an important fertilizer with NPK rating 34-0-0 (34% nitrogen). It is less concentrated than urea (46-0-0), giving ammonium nitrate a slight transportation disadvantage.
Is 32% nitrogen flammable?
Fire Hazard: Not considered flammable but may burn at high temperatures. Reactivity: Hazardous reactions will not occur under normal conditions. Advice for Firefighters. Precautionary Measures Fire: Exercise caution when fighting any chemical fire.
Is UAN explosive?
In solution UAN is normally considered low hazard. However, when the water in UAN evaporates, residue may include concentrated ammonium nitrate and urea. When sensitised or during decomposition, concentrated ammonium nitrate may become unstable and/or explosive.
How do you calculate 32 Nitrogen?
One — is this enough for 180 bu corn? Also is this 350/400 pounds of N as many articles (seem to) refer to or what is (the actual) pounds at this rate per acre. Or do I go back to units of N (per bushel). In which case at 180 bu, I would need 60 gallons of 32% for corn on corn?”
What do the 3 numbers mean on fertilizer?
All fertilizer labels have three bold numbers. These three numbers represent the primary nutrients (nitrogen(N) – phosphorus(P) – potassium(K)). This label, known as the fertilizer grade, is a national standard. A bag of 10-10-10 fertilizer contains 10 percent nitrogen, 10 percent phosphate and 10 percent potash.
What is the ratio of a 10 10 20 fertilizer?
1-1-1 ratio
FERTILIZER RATIOS For example, a 10-10-10 fertilizer is a 1-1-1 ratio, and a 20-10-5 fertilizer is a 4-2-1 ratio.
Is LN2 conductive?
Nitrogen cannot conduct electricity. It is an insulator because its electrons are not able to move freely.
What is the CAS number for ammonium nitrate?
Ingredient/Chemical Designations Weight % GHS Classification Notes Ammonium nitrate CAS Number: 0006484-52-2 42 Ox. Liq. 3;H272 Eye Irrit. 2;H319 [1] Urea CAS Number: 0000057-13-6 33 Not classified [1] [1] Substance classified with a health or environmental hazard. [2] Substance with a workplace exposure limit.
What are the hazards of urea?
Hazards. UREA, AMMONIUM NITRATE SOLUTION, (W/AQUA AMMONIA) is a basic solution. Reacts exothermically with acids. Can react with both oxidizing agents and reducing agents. May be subject to detonation if allowed to dry out.
What is the NFPA rating for ammonium nitrate?
Capable of detonation or explosive decomposition or explosive reaction but requires a strong initiating source or must be heated under confinement before initiation. Possesses oxidizing properties. Note: NFPA ratings shown are for ammonium nitrate, CAS number 6484-52-2.
What is the GHS classification for ammonium nitrate?
This product contains the following substances that present a hazard within the meaning of the Controlled Products Regulations. Ingredient/Chemical Designations Weight % GHS Classification Notes Ammonium nitrate CAS Number: 0006484-52-2 42 Ox.
