Humic acids, humates and fulvic acids from leonardite, lignite and plant sources: the carbon raw materials behind our fertilizers, also supplied to fertilizer makers.
Humic acids and humates
Humic acid
Soil conditioner and granule ingredient.
HA 50–60% · OM 80–85%Potassium humate
Fertigation and liquid fertilizers.
HA 50–60% · K₂O 10%Super potassium humate
Concentrated grade for clear liquids.
HA ≥ 70% · K₂O 10%Sodium humate
Binder, drilling and water treatment.
HA 50–65%Super sodium humate
Refined, 75% humic acid.
HA ≥ 75%Ammonium humate
Humic carbon with ammonium N.
HA 50% · N 5%Nitro humic acid
Activated humic acid for alkaline soils.
HA 50% · N 2%Sodium humate feed grade
Feed and drinking-water additive where permitted.
HA 50%High-purity humic acid
Purified humic raw material.
HA + FA ≥ 98%Fulvic acids
Mineral fulvic acid
Soluble at all pH; foliar and fertigation carrier.
FA 30–60%Potassium fulvate
Humic and fulvic carbon with potassium.
FA 10–20% · K₂O 10%Bio fulvic acid
Fermented from bagasse; acidic.
FA 50% · K₂O 10%Lignin-based carbon
Lignosulfonates and lignohumates are supplied by our agriculture division: see the lignin-based product range on chinalignin.com.
Compare humic and fulvic products
| Product | Key content (dry basis) | Water solubility | Main use |
|---|---|---|---|
| Humic acid | HA 60% min (grade 1) | Insoluble | Soil conditioner, base fertilizer |
| Nitro humic acid | HA 50% min, N 2% | Insoluble | Soil conditioner |
| Potassium humate | HA 50–60% min, K₂O 10% min | Soluble | Fertigation, NPK blends |
| Super potassium humate | HA 70% min, K₂O 10% min | 100% | Drip irrigation, liquid fertilizers |
| Ammonium humate | HA 50% min, N 5% min | 80% | Soil application, blends |
| Sodium humate | HA 50–65% min | Soluble | Industrial, ceramics, liquid products |
| Super sodium humate | HA 75% min | 100% | Water treatment, drilling mud |
| Potassium fulvate | FA 10–20% min, K₂O 10% min | 100% | Fertigation, base fertilizer |
| Mineral fulvic acid | FA 30–60% min | 100% | Fertigation, foliar fertilizers |
| Bio fulvic acid | FA 50% min, K₂O 10% min | 100% | Foliar spray |
Values are minimums from the product TDS. Each lot ships with its COA.
How to choose
- Soil conditioning and base fertilizer: humic acid or nitro humic acid granules.
- Drip irrigation and liquid fertilizers: potassium humate or super potassium humate.
- Foliar sprays: bio fulvic acid or mineral fulvic acid.
- Feed: see our feed division’s feed-grade sodium humate.
FAQ
What is the difference between humic acid and fulvic acid?
Humic acid is the larger fraction and is insoluble in water and acid; it is used mainly to condition soil. Fulvic acid is the smaller fraction and dissolves in water at any pH, so it suits foliar sprays and fertigation.
Which humic product dissolves in water?
The potassium, sodium and ammonium salts (humates) and the fulvic acid products. Plain humic acid and nitro humic acid are insoluble in water.
Do you supply TDS and samples?
Yes. Every grade has a TDS and SDS, and each lot ships with its COA. Request documents or a sample.