Non Toxic Lignosulfonate Dispersant Agent Dark Brown Powder Agricultural Grade

Lignosulfonate are used in water-dispersed particulate pesticides

Lignosulphonates (Lignosulphonates) is a kind of paper waste liquid containing lignin as raw material for sulfonation processing, and then through condensation, conversion, desugar and other reactions to prepare an important product specially applied in the chemical market. Choose lignosulfonate, many people do not know how to identify and detect, the following first introduce lignin.

Lignin is naturally present in wood. The biosynthesis of lignin, in brief, consists of carbon dioxide and water through photosynthesis through D-glucose, shikimic acid, tyrosine, p-hydroxycinnamic acid, coumarol to pinol and butanol, and finally consists of three compound units of pinol, pinol and butanol. By dehydrogenation polymerization, lignin, which is a kind of amorphous phenolic polymer with a very complex structure, is produced.

Wood (the main raw material of the cellulose industry) is mainly composed of three chemical compounds (cellulose, hemicellulose and lignin); Its composition, cellulose accounted for more than 50%, hemicellulose about 10%, lignin accounted for more than 30%. Lignin, considered the most valuable and resource-rich natural polymer on Earth, is produced by dehydrogenation polymerization of the three different types of phenylpropyl monomers mentioned above (coumarin, sumberol, and butanol).

For many years, lignesulfonates have been widely used as dispersing agents in pesticide powders, wettable powders, suspensions, water-dispersing granules and micro-capsule suspensions. It is especially used in wettable powder and water dispersible granule.

Because lignosulfonate is an anionic dispersant, the molecular weight is large (generally more than 4,000 to tens of thousands). It can not only provide electrostatic repulsion, but also provide steric hindrance. In the production process, whether it is used alone or in combination with other dispersants, it can provide products with very good dispersion and suspension ability. Therefore, it is also most widely used in water dispersible granules of pesticides.

There are three important indicators for the selection of lignosulfonate powder:

(1) Molecular weight: the larger the molecular weight, the more adsorption points, the stronger the ability to adsorb the effective components of pesticides, the dispersant is not easy to desorption, and plays a good dispersion protection role. On the contrary, the dispersant is easy to desorption, showing that the dispersity of the agent is poor.

(2) Degree of sulfonation: it is the ratio of sulfonic acid group to total molecular weight (mg/mol), which mainly reflects the degree of sulfonation of lignin. The higher the degree of sulfonation, the better the water solubility, regardless of the pH is dissolved well.

(3) Sugar content: The side effect of sugar is to make the product easy to absorb moisture, caking, making the product hard, thus affecting the use and dispersion of the product

Package and Storage:

(1) The product comes in the form of powdery.The powdery form is packed in PE/PP woven bags, 25kg/package;

(2) Keep away from moisture.

(3) The product is non-flammable, non-toxic, non-explosive, and can be stored for a long time.

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