Urea
Product Details
Specifications provided
White particles （content ≥46%）
Colourful particles （content ≥46%）
Acicular prism crystal （content ≥99%）
(Scope of application reference ‘product usage’)
① The composition, character and nutrient content are the same, the nutrient release and absorption mode are the same, and the water content, hardness, dust content and transport and storage resistance of the particles are different.
② The dissolution rate, nutrient release rate and fertilizer rate of the particles are different, and the dissolution rate of small particles is fast and the effect is fast; The dissolution of large particles is slow and the fertilization period is long.
③ The content of large urea biuret is lower than that of small particles, which is used as a base fertilizer, or large particles are used for the production of blended fertilizers. For topdressing, small granular urea is used for foliar spraying, hole application, trench application and strip fertilization, and flush application with water.
④ Large-particle urea has low dust content compared with small-particle urea, high compressive strength, good fluidity, can be transported in bulk, is not easy to break and caking, and is suitable for mechanized fertilization.
EVERBRIGHT® ‘ll also provide customized ：content/whiteness/particlesize/PHvalue/color/packagingstyle/ packaging specifications and other specific products that are more suitable for your use conditions , and provide free samples.
Product Parameter
57-13-6
200-315-5
60.06
Organic compounds
1.335 g/cm³
soluble in water
196.6°C
132.7 ℃
Product Usage
Fertilization control
[Adjustment of flower amount] In order to overcome the large and small year of the apple field, spraying 0.5% urea aqueous solution on the leaf surface at 5-6 weeks after flowering (the critical period of apple flower bud differentiation, the growth of new shoots is slow or stops, and the nitrogen content of leaves shows a downward trend), spraying twice in succession, can increase the nitrogen content of leaves, accelerate the growth of new shoots, inhibit flower bud differentiation, and make the flower amount of big year appropriate.
[Flower and fruit thinning] Peach flower organs are more sensitive to urea, but the reaction is slow, so foreign peach with urea test, the results show that peach and nectarine flower and fruit thinning, need a large concentration (7.4%) to show good results, the most suitable concentration is 8%-12%, 1-2 weeks after spraying, to achieve the purpose of flower and fruit thinning.
[Rice seed production] In hybrid rice seed production technology, in order to improve the outcross rate of parents, in order to increase the seed production amount of hybrid rice or the fertility amount of sterile lines, the experiment was carried out with urea instead of gibberellin, and the use of 1.5% to 2% urea in the pregnancy peak stage and the first ear stage (20% ear selection), the fertility effect was similar to gibberellin, and it did not increase the plant height.
[Pest control] With urea, washing powder, water 4:1:400, after mixing, can prevent fruit trees, vegetables, cotton aphids, red spiders, cabbage insects and other pests, insecticidal effect of more than 90%. [Urea iron fertilizer] Urea forms chelated iron with Fe2+ in the form of complex. This kind of organic iron fertilizer has low cost and good effect on preventing iron deficiency and green loss. The control effect of chlorosis is better than that of 0.3% ferrous sulfate.
Textile printing and dyeing
① Can be used as a large number of melamine, urea-formaldehyde resin, hydrazine hydrate, tetracycline, phenobarbital, caffeine, VAT brown BR, phthalocyanine B, phthalocyanine Bx, monosodium glutamate and other products production raw materials.
② It has a brightening effect on the chemical polishing of steel and stainless steel, and is used as a corrosion inhibitor in metal pickling, and is also used in the preparation of palladium activation liquid.
③ In industry, it is also used as a raw material for the manufacture of urea-formaldehyde resins, polyurethanes and melamine-formaldehyde resins.
④The selective reducing agent for denitrification of combustion exhaust gas, as well as automotive urea, which is composed of 32.5% high-purity urea and 67.5% deionized water.
⑤ To separate paraffin wax (because urea can form clathrates), refractory materials, components of environmental protection engine fuel, components of whitening teeth products, chemical fertilizers, important auxiliary agents for dyeing and printing.
⑥ textile industry is an excellent dye solvent/hygroscopic agent/viscose fiber expanding agent, resin finishing agent, has a wide range of uses. Comparison of the hygroscopic properties of urea with other hygroscopic agents in the textile industry: ratio to its own weight.
Cosmetic grade (moisturizing ingredient)
Dermatology uses certain agents containing urea to increase the moisture of the skin. The closed dressing used for non-surgically removed nails contains 40% urea. Urea is a good moisturizing ingredient, it exists in the skin's cuticle, is the skin's natural moisturizing factor NMF main component.
