Humic Acid is a high polymer heterogeneous aromatic hydroxyl carboxylic acid.
It is black brown powder or granular, insoluble in water and is of weak acidity, easily soluble in alkali.
It comprises hydroxyl, carboxylic, phenolic hydroxyl, active groups.
ITEM | STANDARD | ||||
Powder 1 | Powder 2 | Powder 3 | Granular 1 | Granular 2 | |
Organic Matter (dry basis) | 80.0% min. | 85.0% min. | 85.0% min. | 75.0% min. | 85.0% min. |
Total Humic Acid (dry basis) | 65.0% min. | 70.0% min. | 70.0% min. | 60.0% min. | 65.0% min. |
Moisture | 15.0% max. | 18.0% max. | 28.0% max. | 15.0% max. | 15.0% max. |
PH | 4.0-6.0 | 4.0-6.0 | 4.0-6.0 | 4.0-6.0 | 4.0-6.0 |