Qujing urea

Source: Wuhai Jinhao Trading Co., Ltd Time: 2024-09-27 01:17:01 [Report]

According to the Notice of the National Development and Reform Commission on the Implementation of Railway Preferential Freight Policy for Agricultural Fertilizers such as Slow release Fertilizers (FGJG [2021] No. 1285), urea was included in the Catalogue of Agricultural Fertilizers with Railway Preferential Freight Rates, and railway freight preferences were implemented.

Rice seed production In hybrid rice seed production technology, in order to improve the outcrossing rate of parents and increase the seed production of hybrid rice or the seed reproduction of male sterile lines, the female parent is generally sprayed with gibberellin to reduce the degree of neck covering or make it completely withdrawn; Or spray the parents to regulate their growth and synchronize their florescence. Due to the high price of gibberellin, its seed production cost is high. People use urea instead of gibberellin to carry out experiments, and use 1.5% - 2% urea at the peak booting stage and the first heading stage (20% heading). Its seed reproduction effect is similar to gibberellin, and does not increase plant height.

Selective catalytic reduction (SCR) exhaust after treatment is a technology that conducts selective catalytic reduction reaction with nitrogen oxides (NOx) in automobile exhaust through ammonia generated from the pyrolysis reaction of urea in combustion exhaust. It is a key and mainstream technology to reduce nox, a harmful substance in combustion exhaust gas such as combustion boilers and diesel engines. SCR system is a system that meets the strict emission laws and regulations of modern vehicles, such as Euro IV/Euro V/Euro VI (national IV/national V/national VI) regulations. Vehicle urea is called AdBlue in Europe and DEF in the United States.

Raw materials of special plastics, especially urea formaldehyde resin, some rubber raw materials, fertilizer and feed ingredients, replacing antifreeze salt sprinkled on the street (the advantage is that it does not corrode metal), enhancing the smell of cigarettes, giving industrial production of pretzels brown, some shampoo, detergent ingredients, ingredients of first-aid refrigeration package (because urea reacts with water, it will absorb heat) The treatment of exhaust gas from diesel engines, engines and thermal power plants with urea for vehicles can especially reduce the composition of nitrogen oxide and rain catalyst (complex salt), which were used to separate paraffin wax (because urea can form inclusion compound), refractory materials, components of environmental engine fuel, components of tooth whitening products, chemical fertilizers, and important auxiliary agents for dyeing and printing.

Urea is a very useful moisturizing ingredient. It exists in the cuticle of the skin and is the main component of the natural moisturizing factor NMF of the skin. For the skin, urea has the effect of moisturizing and softening the cutin, so it can also prevent the cuticle from blocking the pores, thereby improving the problem of acne. It is used to add moisturizing ingredients in facial mask, skin care lotion, cream, hand cream and other products. The addition ratio is 3-5%.

Laboratory application

Urea can denature proteins very effectively, especially can destroy non covalent bond bound proteins very effectively. This feature can improve the solubility of some proteins, and the concentration can reach 10 mol/volume. Urea can also be used to make urea nitrate.

Label: Qujing urea, sales of urea, urea telephone, supply of urea