Allas: Sulfur Coated Urea Scu
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:diamino methanal;Urea; UREUM;
Customization: Available


Sulfur Coated Urea Scu, 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 resin-coated controlled-release fertilizer, and other fertilizers.

Sulfur-coated urea has a unique color, and 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 is 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, a unique sulfur composition, which can control the rate of nutrient release.

Sulfur-Coated Urea Specifications

Name Sulfur Coated Urea Class AAA
Mark / Department Quality Control Department
Sample Base 200 MT Sample Size 500g
Batch No 2022060610 Sampling Personnel      DICKE, CHEN
Sampling Date 5th Aug 2022 Test Date 5th Aug 2022
Inspection basis GB29401-2012  Sulfur Coated Urea(SCU)
1 N                % ≥37.0 37.6 QUALIFIED
≤27.0    22.6 QUALIFIED
4 MOISTURE(H2O)   % ≤1.0 0.8 QUALIFIED
5 BIURET           % ≤1.2 0.4 QUALIFIED
6 S                 % ≥10.0 10.5 QUALIFIED
7 SIZE(2.00~4.75mm)  % ≥90 95 QUALIFIED

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, and 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 being 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 “intelligently controlled release fertilizer”.

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