Calcium Nitrate Tetrahydrate, chemically structured as Ca(NO₃)₂·4H₂O, represents a crucial inorganic crystalline compound widely deployed in high-yield agronomy, advanced civil infrastructure engineering, molten salt energy storage architectures, and wastewater treatment systems. As a highly soluble source of both essential calcium and nitrate-nitrogen, its dual chemical functionality allows it to act as both a physiological developer in plant biology and a fast-acting set accelerator in concrete systems.
The global production and logistics of Calcium Nitrate Tetrahydrate are heavily tied to raw material optimization. Our Shanxi-based production corridor leverages localized access to high-purity limestone (calcium carbonate) and nitric acid, deploying efficient reaction chambers to produce a clean crystallizing melt. Below is an overview of the technical standard specifications required by global industrial consumers:
| Specification Parameter | Agricultural Grade Standard | Industrial Grade Standard | High-Purity Technical Grade |
|---|---|---|---|
| Assay [Ca(NO₃)₂·4H₂O] | ≥ 98.0% | ≥ 99.0% | ≥ 99.5% | Nitrogen (N) Content | ≥ 11.5% | ≥ 11.7% | ≥ 11.8% |
| Calcium (Ca) Content | ≥ 16.5% | ≥ 16.9% | ≥ 17.0% |
| Water Insoluble Matter | ≤ 0.1% | ≤ 0.05% | ≤ 0.01% |
| Heavy Metals (as Pb) | ≤ 10 ppm | ≤ 5 ppm | ≤ 2 ppm |
| pH Value (5% solution) | 5.0 - 7.0 | 5.5 - 7.0 | 6.0 - 7.0 |
Sourcing directly from Chinese chemical manufacturing nodes offers critical structural cost benefits. However, a major bottleneck for global procurement remains the physical properties of the tetrahydrate form. It is highly deliquescent (readily absorbing moisture from the air to dissolve). To resolve this, our facilities utilize advanced temperature-controlled packaging lines and introduce proprietary anti-caking agents, ensuring free-flowing crystals even during extended sea transport across diverse climate zones.
Understanding how Ca(NO₃)₂·4H₂O behaves in field operations determines the commercial success of the product. The following modules breakdown the chemical action mechanism within key application environments:
Calcium is a structural constituent of cell walls, maintaining cell membrane integrity. Under intense growth cycles, plants cannot rapidly remobilize calcium. A soil application or foliar spray of Ca(NO₃)₂·4H₂O provides highly bioavailable calcium ions alongside nitrate nitrogen (which enhances cation uptake). This synergistic interaction prevents physiological disorders like Blossom End Rot in solanaceous crops and Bitter Pit in pomology.
In cold-weather civil engineering, low temperatures delay concrete hydration. The addition of Calcium Nitrate Tetrahydrate accelerates the nucleation process of Calcium Silicate Hydrate (C-S-H) gel. The calcium ions facilitate the fast precipitation of calcium hydroxide, speeding up the setting time and promoting early compressive strength without inducing reinforcement corrosion (unlike traditional chloride-based accelerators).
Sewer systems and treatment basins often develop anaerobic zones where sulfate-reducing bacteria produce hydrogen sulfide (H₂S), causing toxic odors and corrosion. Dosing Ca(NO₃)₂·4H₂O creates an alternative metabolic pathway. Denitrifying bacteria utilize the nitrate oxygen, suppressing the activity of sulfate-reducing bacteria, mitigating H₂S generation, and keeping sewage networks structurally safe.
Driven since 2000, we have been committed to the entrepreneurial spirit and passion for innovation. Our team takes pride in delivering dependable products and services with a quality distinction in thermal energy storage & water-soluble fertilizer industries globally. Our production lines operate with refined processes to secure reliability across our entire product portfolio.
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With an annual output of 600,000 Tons of molten salts and industrial inorganic compounds, we fulfill contract deliveries without delay.
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Multiple items for chemical selection such as KNO₃, NaNO₃, and Ca(NO₃)₂·4H₂O to meet the varying requirements of global industry clients.
Browse our core divisions built for high-demand chemical processing sectors:
Handling and transporting Calcium Nitrate Tetrahydrate requires high logistical accuracy. Classified as an oxidizing agent under several international transportation standards if contaminated or improperly granulated, it must be packaged and carried under strict safety parameters. At Shanxi Vojin New Materials, we provide detailed safety protocols to prevent environmental moisture contamination:
Our chemicals undergo regular batch audits. We maintain updated Safety Data Sheets (SDS) and comply with international regulations including REACH (Europe), ensuring that import customs clearance in target countries is simple and efficient.
Using 25kg PP/PE bags or 1000kg bulk bags with moisture-proof internal liners ensures the material remains dry throughout ocean transport. We prevent lump formation by utilizing climate-regulated packaging lines.
Prior to port delivery, we offer optional third-party validation covering chemical assays, heavy metal limits, and particle size distribution. This guarantees transparency and compliance with industrial standards.
As the chemical industry transitions toward low-carbon operations, the manufacturing processes for calcium nitrate are evolving. The integration of renewable energy in nitric acid synthesis represents the next leap forward. Shanxi Vojin New Materials is actively monitoring technical developments to reduce emissions and optimize energy use within our operations.
Stay updated with the latest technological developments in molten salt thermal storage and nitrate synthesis:
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