Division note: Calcium lignosulfonate for fertilizer, soil and crop formulations is managed by ChinaLignin, Green Agrochem’s agriculture division. LigninCorp retains this URL as a technical routing page for buyers who encounter the topic through industrial lignosulfonate chemistry.
Role in metal-ion and micronutrient formulations
Calcium lignosulfonate is a water-soluble lignin-derived polyelectrolyte. Its anionic functional groups can interact with metal ions, which is why suitable agricultural grades may be evaluated as dispersing, wetting and complexing-support materials. Actual complex stability and nutrient availability depend on the metal, pH, ionic strength, competing ligands, product composition and formulation conditions.
It is inaccurate to claim that the material automatically “locks” toxic metals, guarantees micronutrient uptake, corrects crop deficiency or raises acidic-soil pH. Those outcomes require a defined formulation, soil and crop test. Calcium lignosulfonate is not a substitute for soil analysis, nutrient planning or market-specific regulatory review.
Current Green Agrochem agriculture-grade data
The following values are from Calcium Lignosulfonate — Agri-Grade, GAC-CaLS-AGRI, TDS Rev. 2.0. The TDS identifies them as typical production values for reference; the shipment COA controls batch-specific results.
| Property | TDS value | Data type / interpretation |
|---|---|---|
| Appearance | Yellow-brown powder | Typical physical form |
| pH | 4–7 | Typical range; test basis should be confirmed with the shipment documents |
| Dry matter | 95% min | Typical production limit |
| Water-insoluble matter | 0.2% max | Typical production limit |
| Sulphate | Around 5% | Typical value |
| Total calcium and magnesium (sulfate) | 5–6% | Typical range |
| Total NPK | Around 10% | Typical value; request the batch COA and method before nutrient claims or label use |
| Lignosulphonate content | 60% min | Typical production limit |
| Sugar | 15% | Typical value |
| Moisture | 7% | Typical value |
Supplier-recommended starting trials
Wetting/spreader-sticker evaluation: the GAC-CaLS-AGRI TDS Rev. 2.0 gives a supplier starting concentration of 0.1–1%. Soil-conditioner formulation evaluation: the same document gives a 1–3% solution. These are supplier-recommended starting trial ranges for this exact grade, not universal production dosages or performance guarantees. Confirm whether the percentage is based on the final mixture and obtain written technical confirmation before commercial use.
Optimize through laboratory, greenhouse and field trials using the actual formulation, water quality, pH, crop, soil, addition sequence, equipment and acceptance criteria. Include untreated and formulation controls, and measure compatibility, precipitation, storage stability, crop safety and the intended agronomic endpoint.
Illustrative COA values
The Rev. Template COA contains demonstration results—pH 5.65, dry matter 96.9%, water-insoluble matter 0.15%, total calcium and magnesium (sulfate) 5.55%, and lignosulphonate content 61.2%. These are illustrative template results, not a current shipment specification or a promise for every batch. Buyers should use the signed and stamped COA supplied for their lot.
Continue with the agriculture division
- Calcium lignosulfonate for metal-ion management — the dedicated agriculture discussion.
- ChinaLignin agricultural applications — fertilizer, soil and crop formulation pathways.
- ChinaLignin agriculture products — compare available ionic forms and grades.
For the current TDS, MSDS, shipment COA, samples or grade matching, email info@greenagrochem.com with the target metal ions, formulation type, application route and market.
