1. Basic Product Information
Calcium Chloride Dihydrate (CaCl₂·2H₂O) is a high-purity inorganic calcium salt presented as white or off-white uniform granules. It is odorless, slightly bitter, and extremely hygroscopic, deliquescing rapidly in humid air. The product dissolves quickly in water with obvious heat release, and the aqueous solution is weakly alkaline. Divided into74% and 77% industrial grades, the granules are full, round, fluid, dust-free and easy to feed. With stable physical and chemical properties, it is widely used in petroleum drilling, water treatment, snow melting, refrigeration circulation, construction antifreeze and industrial dehumidification fields.
Molecular Formula: CaCl₂·2H₂O
Molecular Weight: 147.02
CAS No.: 10035-04-8
HS Code: 2827.20
Payment Terms: T/T, L/C
Trade Terms: FOB, CFR, CIF
MOQ: 20GP ≈ 20-25MT
Melting Point: 30℃ (Initial dehydration); completely dehydrated at 260℃
Boiling Point: 100℃ (Water evaporation under atmospheric pressure)
Core Features: Uniform granules, good fluidity, low dust, fast dissolution, stable heat release, strong hygroscopicity, anti-caking, wide applicability
2. Technical Parameter Comparison Table (74% VS 77% Granular)
3. Product Characteristics
3.1 74% Granular Calcium Chloride Dihydrate
The 74% grade is a mainstream general industrial specification with stable purity standards. The granules are uniform, round and dust-free, suitable for both manual and mechanical feeding. It features fast dissolution, uniform heat release, excellent hygroscopicity and strong anti-caking performance without hardening during long-term storage. With extremely high cost performance, low consumption and stable effect, it is the preferred raw material for large-scale industrial scenarios such as snow melting, conventional water treatment and industrial drying.
3.2 77% Granular Calcium Chloride Dihydrate
The 77% high-purity refined grade contains higher effective ingredients with stricter control of sulfate and other impurities. It provides clearer aqueous solution, fewer contaminants and lower equipment corrosion. The full and regular granules with higher density deliver better hygroscopic, snow-melting and water conditioning performance than the 74% grade. With more stable overall performance, it adapts to high-precision water treatment, petroleum drilling, precision refrigeration circulation and low-corrosion industrial scenarios, effectively reducing equipment scaling and operation & maintenance costs.
4. Main Applications
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Petroleum Drilling Industry: Widely used in onshore and offshore oilfield drilling, cementing and workover operations for preparing drilling fluid, completion fluid and workover fluid. It effectively increases mud density, balances formation pressure, stabilizes well walls, inhibits clay hydration and expansion, and prevents well collapse, stuck pipe and lost circulation, stabilizing drilling conditions and improving operation efficiency.
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Water Treatment IndustryApplied in comprehensive treatment of industrial circulating cooling water, industrial wastewater and municipal sewage. It adjusts water hardness, flocculates and precipitates suspended solids, removes phosphorus and heavy metal ions, and reduces water turbidity. It also inhibits algae growth, pipeline scaling and corrosion, stabilizing water quality for factory sewage treatment and circulating water systems.
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Snow Melting & Anti-freezing: A high-efficiency industrial antifreeze agent that lowers the water freezing point below -15℃, featuring fast snow melting speed and long-lasting anti-freezing effect without re-freezing. Widely used for winter snow removal and anti-icing of highways, bridges, airports and factory roads with stable low-temperature performance.
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Industrial Refrigeration Circulation: Serves as the core raw material for salt water circulation in cold storage, refrigeration units and ice-making equipment. It prepares low-temperature refrigerated salt water with fast cooling speed, stable refrigeration effect and low circulation loss, widely used in industrial cold chains, chemical temperature control and low-temperature equipment.
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Construction Engineering: Used as early strength agent and antifreeze for concrete and mortar. It accelerates cement hardening speed, improves structural strength under low temperature conditions, and effectively prevents concrete cracking, insufficient strength and sanding in winter construction, ensuring construction quality and progress.
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Industrial Drying & Dehumidification: With super strong hygroscopicity, it is used for drying and purification of industrial gases such as nitrogen and hydrogen, as well as moisture-proof dehumidification of warehouses, mechanical equipment and precision instruments, achieving long-term and stable drying effects.
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Other Industrial Uses: Widely applicable in textile sizing, waste paper deinking, wood preservation, rubber additives, chemical synthesis auxiliaries and other industrial fields with strong universality.
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5. Packaging, Storage & Transportation
5.1 Packaging Specifications
Conventional package: 25kg inner plastic film + wear-resistant woven outer bag; bulk package: 1 ton jumbo bag. Adopts industrial-grade moisture-proof and sealed packaging with excellent leak-proof, wear-resistant and anti-extrusion performance. Custom packaging is available according to customer requirements.
5.2 Storage Requirements
Store in a cool, dry and well-ventilated warehouse with full sealing. Avoid rain, moisture and humid air to prevent deliquescence and caking. Keep away from acid, alkali, toxic and polluting materials with classified storage. The sealed shelf life is 12 months.
5.3 Transportation Requirements
This product is ordinary non-dangerous chemical goods with low transportation threshold. Avoid strong sunlight, rain immersion and violent extrusion during transportation to prevent package damage, leakage and moisture. Mix transportation with strongly corrosive and toxic goods is prohibited to ensure intact and safe delivery.