Calcium Polyaspartate (PASP-Ca) | High-Efficiency Chelated Calcium Fertilizer & Soil Remediation Agent
Calcium Polyaspartate (PASP-Ca) | High-Efficiency Chelated Calcium Fertilizer & Soil Remediation Agent
Chelated Calcium Fertilizer | Biodegradable | Liquid & Solid Available | Customization Supported
Product Overview
Calcium Polyaspartate (PASP-Ca) is a polymeric chelated organic calcium fertilizer. The carboxyl groups on its molecular chain effectively chelate calcium ions, preventing fixation by soil phosphates and sulfates, achieving a calcium utilization rate of over 80% (compared to less than 30% for conventional calcium fertilizers). The product is fully biodegradable, with final degradation products being aspartic acid and fumaric acid—both naturally occurring and environmentally friendly. It combines four core functions: calcium supplementation, stress resistance, yield enhancement, and heavy metal passivation.
Available in both liquid and solid forms, with identical performance—choose based on your preference.
This product is developed and manufactured by Hebei Think Do Chemicals Co., Ltd, supporting customized packaging specifications, label designs, and formulation concentrations. OEM/ODM services are also available, complete with full export documentation (COA, MSDS, TDS, commercial invoices, packing lists, etc.).
Technical Specifications
Parameter | Liquid Form | Solid Form |
Appearance | Light yellow to amber transparent liquid | light yellow powder/granules |
Calcium Content (Ca), % | ≥ 3.6 | ≥ 12.0 |
Solid Content, % | ≥ 30.0 | — |
Moisture, % | — | ≤ 7.0 |
Reduced Viscosity (30℃), dL/g | 0.030-0.060 | 0.030-0.060 |
pH (10g/L Solution) | 3.0-7.0 | 3.0-7.0 |
Biodegradability | Fully biodegradable | Fully biodegradable |
Molecular Formula: [C₄H₄NO₃]₄Ca
Key Benefits
Chelated Calcium Supply: Prevents calcium fixation by phosphates/sulfates; enables dual-direction transport (xylem + phloem) reaching fruits and new shoots directly
Fertilizer Synergy: When mixed with urea or compound fertilizers, reduces chemical fertilizer usage by 15%-20%
Stress Resistance: Strengthens cell walls, reduces blossom-end rot (BER) incidence by 60%-80%
Quality Improvement & Freshness Preservation: Increases fruit firmness and extends shelf life by 7-10 days
Heavy Metal Passivation: Chelates and immobilizes Pb²⁺, Cd²⁺, Cu²⁺ for contaminated soil remediation
Application Guide
Application Method | Liquid Dosage | Solid Dosage | Timing |
Foliar Spray | Dilute 800-1000x | Dilute 800-1000x (prepare stock solution first) | Pre-flowering / Young fruit stage / Fruit expansion |
Drip Irrigation / Furrow | 3.0-5.0 L/acre·application | 0.8-1.5 kg/acre·application | Every 15-20 days during growing season |
Soil Remediation | 2.5-6.0 kg/acre | 8-20 L/acre | Broadcast before tillage or apply with irrigation water |
⚠️ pH 3.0-7.0. Do not directly mix with strongly alkaline pesticides/fertilizers (e.g., Bordeaux mixture, lime sulfur, calcium cyanamide).
Packaging & Storage
Parameter | Liquid Form | Solid Form |
Packaging | 25kg/250kg/1250kg plastic drums | 20kg composite bags (with PE moisture-proof liner) |
Storage | Room temperature, ventilated, sealed container | Cool, dry, ventilated, sealed bags |
Shelf Life | 12 months | 12 months
|
⚠️ Mildly irritating to skin and mucous membranes. Wear gloves, goggles, and a mask during handling.
FAQ
Q: How to choose between liquid and solid forms?
A: Liquid is ready-to-use and labor-saving; solid has lower freight costs, smaller storage footprint, and longer shelf life. Performance is identical.
Q: Can it be mixed with phosphorus fertilizers?
A: Yes. Calcium is chelated and protected, so no precipitation with phosphates. Recommended mixing sequence: dilute PASP-Ca in water first, then add phosphorus fertilizer.
Q: Can packaging be customized?
A: Yes. Hebei Think Do Chemicals Co., Ltd supports customized packaging specifications and label designs. Please contact us for details.
Q: Is it suitable for organic farming?
A: Fully biodegradable with natural amino acids as degradation products. Please verify compliance with your local organic certification body.
Q: What is the shelf life?
A: 12 months when stored in sealed containers at room temperature.
For product samples, Technical Data Sheets (TDS), or Material Safety Data Sheets (MSDS), please contact Hebei Think Do Chemicals Co., Ltd. We welcome inquiries from domestic and international customers for sample requests, technical support, or long-term cooperation.
