Urea Ammonium Nitrate (UAN)

Product Description*:

Liquid fertilizer solutions or fluid fertilizers are popular in many areas because they are safe to handle, convenient to mix with other nutrients and chemicals, and are easily applied. A solution of urea (CO(NH₂)₂) and ammonium nitrate (NH₄NO₃) containing between 28 and 32% N is the most popular N fluid fertilizer.

UAN makes an excellent source of N nutrition for plants. However, since half of the total N is present as urea, extra management may be required to avoid volatile losses. When UAN remains on the surface of the soil for extended periods (a few days), soil enzymes will convert the urea to NH₄⁺, a portion of which can be lost as ammonia gas. Therefore, UAN should not remain on the

soil surface for more than a few days in order to avoid significant loss. Inhibitors that slow these N transformations are sometimes added. When UAN is first applied to soil, the urea and the NO₃^- molecules will move freely with water in the soil. The NH₄⁺ will be retained in the soil where it first contacts cation exchange sites on clay or organic matter. Within 2 to 10 days, most of the urea will be converted to NH₄⁺ and no longer be mobile. The originally added NH₄⁺ plus the NH₄⁺ coming from urea will eventually be converted to NO₃^- by soil microorganisms.

Chemical Properties

Guaranteed Specifications:NY/T 2670-2020

Features:

• The new generation of liquid nitrogen and containing nitrate nitrogen, ammonium nitrogen and amide nitrogen.
• Diversity of nitrogen form meet the be fond of of different crops on different forms of nitrogen.
• Quick, efficient and effective combination of utilization is high, safe environmental protection.
• It has the characteristics of the liquid fertilizer. Saving time and labor for convenient application, and can cooperate with drip irrigation, sprinkler irrigation and irrigation and other modern integrated water equipment.

Packaging:

We effectively solved the problem of the leakage of CAN by improving the appearance and quality of packages such as the thickness and the loading capacity of drums.

All kinds of customized packages can be provided according to customer’s requirements.

• 5/20L/25L/200L PVC Bucket, 1000L IBC Tank
• 20-27 MT loose or on pallet in containers

Production*：

Liquid urea-ammonium nitrate (UAN) fertilizer is relatively simple to produce. A heated solution containing dissolved urea is mixed with a heated solution of ammonium nitrate to make a clear liquid fertilizer. Half of the total N comes from the urea solution and half from the ammonium nitrate solution. UAN is made in batches in some facilities or in a continual process in others. No emissions or waste products occur during mixing.

Since UAN is a concentrated N solution, its solubility increases as the temperature rises. To prevent the N components from precipitating as crystals, UAN solutions are made more dilute in regions with cold winter temperatures. Therefore, the N concentration in commercial UAN fertilizers will vary from 28% N to 32% N depending on geography. A corrosion inhibitor is usually added to the final solution to protect the steel in storage tanks.

Application*:

Solutions of UAN are widely used as a source of N for plant nutrition. The NO₃^- portion (25% of the total N) is immediately available for plant uptake. The NH₄⁺ fraction (25% of the total N) can also be assimilated directly by most plants, but is rapidly oxidized by soil bacteria to form NO₃^-. The remaining urea portion (50% of the total N) is hydrolyzed by soil enzymes to form NH₄⁺, which is subsequently transformed to NO₃^- in most soil conditions.

*Source: Nutrient Source Specifics (No. 7), International Plant Nutrition Institute.