Sulfur Coated Urea Scu

Allas : Slow Released Fertilizer Sulphur Coated Urea
Chemical name:Urea
CAS No.: 57-13-6
Formula: CH4n2o
EINECS: 200-315-5
Certification: ISO9001, TUV, GMP, ISO, CE
Application: Vegetables, Flowers, Fruit
Appearance: Granular
Density: 1.32 g/m3
Equivalent Product Name:N.A
Equivalent Chemical Name:diaminomethanal;Urea;UREUM;
Customization: Available

Sulfur as the main wrapping material, wrapped urea, to achieve slow release of nitrogen fertilizer, also known as sulfur-coated urea. The wrapping material has sulfur or microcrystalline wax, according to the different coating materials, it can be divided into sulfur-coated controlled release fertilizer and resin-coated controlled release fertilizer and other fertilizers.

Sulfur-coated urea has a unique color, belongs to the inorganic coating type of slow-release fertilizer, urea or compound fertilizer surface has a layer of film, the unique sulfur composition, can control the rate of nutrient release, nutrient release continuous and stable, suitable for a variety of soils and crops, to meet the nutritional needs of the crops due to the seasons, to improve the quality and increase yields. Urea or compound fertilizer has a film on the surface, unique sulfur composition, can control the rate of nutrient release.

Sulfur Coated Urea Specifications

NameSulfur Coated UreaClassAAA
Mark/DepartmentQuality Control Department
Sample Base200 MTSample Size500g
Batch No2022060610Sampling Personnel     DICKE,CHEN
Sampling Date5th Aug 2022Test Date5th Aug 2022
Inspection basisGB29401-2012  Sulfur Coated Urea(SCU)
1N                %≥37.037.6QUALIFIED
≤27.0   22.6QUALIFIED
5BIURET           %≤1.20.4QUALIFIED
6S                 %≥10.010.5QUALIFIED
7SIZE(2.00~4.75mm)  %≥9095QUALIFIED
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Sulfur Coated Urea Scu: Guide

Take sulfur coated controlled release fertilizer as an example: there are micropores on the surface of the coated film, and the micropores are affected by thermal expansion and contraction, becoming larger or smaller.
In spring and summer, the temperature rises, rainfall is abundant, when the crop grows vigorously, the amount of fertilizer. The microporous membrane warming, soil moisture into the membrane, melting part of the fertilizer, liquid fertilizer nutrients from the membrane microporous outflow into the soil, for crop growth needs.
When a drought occurs, the soil is short of water, the fertilizer is difficult to release from the capsule in the form of liquid nutrients, avoiding the crop is burned due to excessive nutrients.
When the temperature drops, crops grow more slowly and need less fertilizer, at which time the micropores of the capsule become smaller and nutrient release is reduced accordingly, avoiding nutrient waste.
Compared with ordinary fertilizer, the utilization rate of fertilizer is improved. It can be said that the nutrient release law of controlled release fertilizer and crop fertilizer law is consistent, so it is also known as “intelligent controlled release fertilizer”.