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Potassium Humate

Potassium Humate
Potassium Humate
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Product Code : AFCOT032
Brand Name : GLAB
Product Description

Potassium humate is the potassium salt of humic acid. The commercial production of potassium humate is done by alkaline extraction of peat or lignite (brown coal), a process performed in water with the addition of potassium hydroxide (KOH), hydrotropic surfactants and sequestering agents. Heat is used to increase the solubility of humic acids for effective extraction of potassium humate. The resulting liquid is then dried to produce the amorphous crystalline like product which is then added as a granule to fertiliser. The potassium humate granules derived through chemical extraction lose their hydrophobic properties and become soluble. Potassium humate is essentially used as soil conditioner. Leonardite, a high quality oxidised lignite (brown coal) is the best material for extraction of large quantities of potassium humate. The amount of potassium humate extracted depends on the degree of oxidization of coal. The best quality potassium humate is produced by sources low in ash. Less oxidised brown coal contains a higher proportion of the insoluble humin fraction while peat is lower in humic acid content and usually high in ash content, making separation of the two necessary by filtration or centrifugation to remove ash, humin. Peat contains non humified organic matter which needs to be reduced to produce a high quality product. Peat is usually higher in fulvic acid content, which are the low molecular weight fractions of humic acid that are high in oxygen containing functional groups and soluble at a low pH of <1, making it an important profitable quality. Fulvic acids have a higher cation exchange capacity and therefore a higher chemical interaction with fertilisers and can easily form soluble chelates of trace metals.

Potassium humate is used mainly in agriculture as a fertilser additive to help increase their efficiency, especially nitrogen and phosphorus based fertiliser inputs. Other salts of humic acid, mainly sodium humate is commercially used in animal health supplements.

Potassium Humate

Sr No.

Characteristics

Specifications

1

assay  

>=55%

2

Water insoluble matter

<=15%

3

K2O

>=8%

4

Moisture

<=15%

5

PH

9-11

6

Appearance

Granular/powder


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