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A deep dive into synthesis parameters, industrial value chains, and thermodynamic characteristics
Calcium Nitrate Tetrahydrate, scientifically denoted as Ca(NO₃)₂·4H₂O, represents a critical inorganic compound containing crucial mineral elements—nitrogen and calcium. As a monoclinic crystalline solid, it displays a molecular weight of 236.15 g/mol. Thanks to its precise tetrahydrate crystal form, it exhibits unique thermodynamic stability, melting at approximately 42.7°C while releasing its coordinate crystal water molecules progressively upon further heating. This chemical trait makes it a valuable precursor for solar energy salt formulations, chemical catalysts, and high-performance agricultural agents.
Unlike anhydrous forms, the tetrahydrate variant provides rapid dissolution dynamics with a highly endothermic heat of solution. This makes it an ideal reagent in operations where rapid cooling and fast dissolution are required. In aqueous systems, it yields free calcium ions (Ca²⁺) and nitrate anions (NO₃⁻) instantly, which are directly bioavailable to plants or ready to participate in polymerization reactions in concrete engineering.
| Parameters | Standard Specification (Industrial Grade) | High-Purity Electronic Grade |
|---|---|---|
| Chemical Formula | Ca(NO₃)₂·4H₂O | Ca(NO₃)₂·4H₂O |
| Assay (Purity) | ≥ 99.0% | ≥ 99.7% |
| Water Insoluble Matter | ≤ 0.05% | ≤ 0.01% |
| Iron (Fe) Content | ≤ 0.002% | ≤ 0.0005% |
| Heavy Metals (as Pb) | ≤ 0.001% | ≤ 0.0002% |
| pH Value (5% Solution) | 5.0 - 7.0 | 5.5 - 6.5 |
Global procurement managers seeking Calcium Nitrate Tetrahydrate face multi-layered challenges. The material is highly hygroscopic; poor moisture barriers during transit can cause caking or liquefaction, rendering the batch unusable for precision manufacturing processes. Industrial buyers must evaluate the factory's anti-caking technologies, packaging specifications (such as heavy-duty PE-lined bags), and supply-chain stability.
Furthermore, security of supply is heavily tied to upstream nitric acid pricing and environmental policies in key manufacturing zones. Buying directly from integrated Chinese factories like Shanxi Vojin New Materials ensures price stability, stable purity, and compliance with global regulatory baselines.
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High purity potassium, sodium, and calcium nitrates tailored for critical industrial operations and molten salt energy storage.
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100% water-soluble formulations designed to provide immediate calcium, nitrogen, and potassium nutrition for agricultural crop cycles.
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Utilized as a critical compound in ternary molten salt mixtures (Solar Salt systems) to lower eutectic melting points and enhance thermodynamic stability in CSP plants.
Serves as a vital coagulant and surface treating agent in the production of specialized glass substrates and display screen layers.
Plays a vital role in industrial heating, coal conversion processes, and regional green steam projects utilizing molten salt heat storage systems.
Acts as the ideal base for 100% water-soluble fertilizers, supplying crops with readily available calcium and nitrate-nitrogen to eliminate deficiency symptoms.
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.
By integrating manufacturing facilities in the heart of China's coal-chemical resources base, we secure low-cost chemical feedstocks while utilizing state-of-the-art crystallization and environmental control systems. This allows us to guarantee consistent delivery of calcium nitrate tetrahydrate, industrial potassium nitrate, and high-purity molten salts to all corners of the globe.
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How Vojin solves critical engineering bottlenecks for global operations
In concentrating solar power (CSP) generation, binary molten salt blends of Sodium Nitrate and Potassium Nitrate are commonly used. However, their high melting temperature (approx 220°C) poses freeze-up risks in pipeline loops. Incorporating high-grade Calcium Nitrate Tetrahydrate reduces the melting point to about 130°C. Lowering this operational threshold minimizes parasite energy required for heating systems, while significantly boosting overall solar thermal conversion efficiencies.
Vojin understands that chemical compliance represents an absolute baseline for North American and European buyers. We maintain full REACH pre-registration and strictly adhere to international hazard communications standard mandates (GHS). Every shipment is accompanied by detailed Safety Data Sheets (SDS), custom hazard classifications, and compliance validation. Through localized partnerships, our customers receive fast custom clearances, integrated warehouse drop-shipping options, and direct technical service.
In modern precision drip irrigation and hydroponics, Calcium Nitrate is the only practical, highly soluble source of plant-available calcium. Because calcium is non-mobile in plant vascular tissues, continuous root-zone delivery is essential. Our low-ammonium, high-calcium tetrahydrate crystals dissolve instantly without leaving particulates that clog micro-emitters. By eliminating heavy metals and chloride ions, Vojin products ensure optimal osmotic balance for high-yield food crop operations.
Why leading global enterprises choose Shanxi Vojin New Materials
Integrated experience on exporting operation Always assure your customers good quality.
Annual output 600,000 Ton Molten salts. High stability synthesis lines running 24/7.
Experienced technology skill & service team Quick response to our customers globally.
Multiple items for selection such as KNO3, NaNO3 to meet various need of customers.
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Technical answers regarding Calcium Nitrate Tetrahydrate
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