China Lignin · Lignohumate Technology Platform
Ferrous Lignohumate
Ferrous Iron–Lignohumate Micronutrient for Agricultural Formulation
Ferrous Lignohumate is a yellow-brown micronutrient powder combining approximately 1–3% ferrous iron with a minimum 55% lignohumate matrix. It is distinct from the higher-iron GAC-FeLH 4 grade and is intended for specification-led foliar, soil and irrigation fertilizer development.
PRODUCT STANDARD
GAC-FeLS
Product Technology
GAC-FeLS provides a lower ferrous-iron assay, acidic-to-neutral pH range and low insoluble matter. Grade selection should reflect iron requirement, soil pH, bicarbonate, water quality and application route.
Ferrous Iron Grade
Approximately 1–3% ferrous iron.
Low Insoluble Matter
Maximum 1% water-insoluble matter.
Distinct Product Grade
Separate from GAC-FeLH 4 and synthetic chelates.
Product Characteristics
- Yellow-brown powder.
- High dry matter and controlled moisture.
- Minimum 55% lignohumate.
- Acidic-to-neutral pH range.
- Defined density for process calculations.
Technical Properties
Product standard: GAC-FeLS · Form: Yellow-brown powder
| Parameter | Typical Specification |
|---|---|
| Appearance | Yellow-brown powder |
| pH | 4–7 |
| Dry matter | ≥ 95% |
| Water-insoluble matter | ≤ 1.0% |
| Sulphate | ≥ 2% |
| Total ferrous iron | Approx. 1–3% |
| Lignohumate | ≥ 55% |
| Density | 0.532 g/cm³ |
| Moisture | ≤ 7% |
Typical production values support technical evaluation. Final acceptance criteria and batch results are governed by the approved specification, contract and shipment Certificate of Analysis.
Applications
Foliar Fertilizer Development
For crop-safe iron formulation trials.
Irrigation Fertilizers
For compatible filtered systems after bicarbonate and precipitation testing.
Soil Iron Programs
For analysis-led iron nutrition concepts.
Organic-Mineral Blends
For powder and compound fertilizers requiring a lower-iron grade.
Application Development
| Application Route | Development Requirement |
|---|---|
| Foliar formulation | Verify crop safety, concentration and tank-mix compatibility. |
| Irrigation systems | Review bicarbonate, filtration, oxidation and precipitation risk. |
| Soil application | Select grade and rate from pH, crop and iron analysis. |
| Dry blends | Verify assay uniformity, density and segregation control. |
No universal field rate is stated. Establish final dosage through compatibility, process, regulatory, crop, soil and field validation.
Technical Considerations
- This product is not equivalent to Fe-EDTA, Fe-DTPA or Fe-EDDHA.
- Ferrous iron can oxidize; verify storage and formulation stability.
- High pH and bicarbonate can reduce iron availability.
- Keep this lower-iron grade distinct from GAC-FeLH 4.
Quality Control
Release controls cover appearance, pH, dry matter, insoluble matter, sulphate, ferrous iron, lignohumate, density and moisture.
Technical Documentation
Product Documents
TDS, product specification, SDS and packaging specification.
Batch Documents
Certificate of Analysis, batch identification and traceability.
Project Support
Samples, compatibility review, pilot trials and export documentation.
Packaging and Storage
Packaging
- 25 kg woven bag with polyethylene inner liner.
- Custom export packaging available by agreement.
Storage
- Store sealed in a cool, dry and ventilated area.
- Protect from moisture, sunlight and incompatible materials.
- Reseal opened bags promptly.
- Shelf life: 24 months in unopened original packaging under recommended conditions.
Safety and Handling
Minimize dust, avoid eye contact and verify crop-safe application rates. Consult the current SDS and applicable regulations before use or transportation.
Lignohumate Product Platform
Develop with China Lignin
Share the crop, formulation, application route, soil or water conditions and target parameters. Our technical team can review grade selection, compatibility, trials, documentation and packaging.