Caclium Nitrate
Calcium Nitrate (Ca(NO₃)₂)
Calcium Nitrate is a highly soluble, inorganic salt with the chemical formula Ca(NO₃)₂. It appears as a colorless or white crystalline granule and is widely used in agriculture as a fertilizer, as well as in wastewater treatment, concrete admixtures, explosives, and refrigeration systems. Its dual nutrient composition—calcium and nitrogen—makes it a critical input in modern farming for both soil conditioning and plant nutrition. The compound is known for its quick absorption, minimal chloride content, and compatibility with other water-soluble fertilizers.
Product Specifications (Typical Agricultural/Industrial Grade)
| Parameter | Specification |
|---|---|
| Appearance | White or colorless crystalline granules |
| Purity | ≥ 99.0% |
| Total Nitrogen (N) | ≥ 11.5% |
| Nitrate Nitrogen (NO₃⁻) | ≥ 11.3% |
| Calcium (Ca) | ≥ 18.5% (as CaO ≥ 25.5%) |
| Water Insoluble Matter | ≤ 0.1% |
| pH (1% solution) | 5.0 – 7.0 |
| Solubility in Water | 1212 g/L at 20°C |
| Heavy Metals | ≤ 0.002% |
| Chloride (Cl⁻) | ≤ 0.02% |
Available Forms
- Crystalline powder
- Prilled (granular) form
- Liquid solution (for fertigation and industrial use)
Grades
- Agricultural Grade (Greenhouse, Hydroponic, Field Use)
- Industrial Grade (Concrete admixture, wastewater treatment)
Key Features & Properties
- Highly Soluble – Rapidly dissolves in water, ideal for fertigation and hydroponics.
- Dual Nutrient Source – Supplies both calcium and nitrogen in plant-available forms.
- Non-acidic Reaction – Neutral to slightly basic pH makes it safe for all soil types.
- Low Chloride Content – Safe for chloride-sensitive crops like tomatoes, lettuce, and strawberries.
- Anti-Caking Treatment – Granular product often treated for improved storage and handling.
- Compatibility – Easily mixed with most water-soluble fertilizers, except concentrated phosphates and sulfates.
Benefits & Advantages
- Improves Crop Yield & Quality – Enhances cell wall strength, reduces disorders like blossom-end rot, and boosts fruit firmness.
- Quick Nitrogen Uptake – Nitrate form of nitrogen is immediately available to plants.
- Reduces Soil Acidity – Unlike ammonium-based fertilizers, it doesn’t acidify the soil.
- Prevents Calcium Deficiency – Vital for root development, leaf health, and disease resistance.
- Boosts Water Penetration – Used in saline or sodic soils to displace sodium ions.
- Enhances Shelf Life of Produce – Stronger cell structure extends post-harvest life.
Applications & Use Cases
Agriculture
- Base/top dressing in open fields.
- Fertigation systems in greenhouses.
- Hydroponic nutrient formulations.
- Foliar sprays for fast calcium correction.
- Prevents physiological disorders (tip burn, bitter pit, blossom-end rot).
Horticulture & Greenhouse Cultivation
- Used in nutrient solutions for leafy vegetables, fruits, and flowers.
- Encourages uniform flowering and fruit set.
Wastewater Treatment
- Controls odor and prevents hydrogen sulfide generation.
- Promotes denitrification in biological treatment processes.
Concrete Industry
- Used as a set accelerator in cold-weather concreting.
- Enhances early strength development.
Explosives Manufacturing
- Ingredient in emulsion explosives due to its oxidizing properties.
Refrigeration Systems
- Calcium nitrate brines are used in some closed-loop refrigeration systems.
Summary
Calcium Nitrate is a versatile, fast-acting nutrient and chemical compound with high utility in both agriculture and industry. Its ability to deliver calcium and nitrate nitrogen simultaneously makes it indispensable for farmers aiming to boost plant health and productivity. In addition to its agricultural benefits, it plays an important role in concrete production, wastewater treatment, and other industrial applications. Calcium Nitrate's high solubility, safety, and efficiency make it a top-tier input for high-performing systems.