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Basic Information
Chemical Formula：CaCl
Molecular Weight：110.98 g/mol
CAS Number：10043-52-4
Appearance：White porous lumps, granules, or powder; highly deliquescent.
Desiccant： Drying of laboratory and industrial gases (e.g., H₂, O₂, N₂), pipelines, shipping containers, etc.; moisture absorption capacity can exceed 300% of its own weight.
Deicing Agent：Road and airport deicer (more effective than salt, even at low temperatures).
Chemical Raw Material： Preparation of calcium salts, metallic calcium, refrigerants, preservatives, concrete accelerators, etc.
Petroleum Industry：Additive for oilfield drilling fluids, dehydrating agent for oil wells.
Food Industry：Food-grade anhydrous calcium chloride used as a firming agent, stabilizer, and calcium fortifier (must comply with food standards).
Environmental Protection： Flocculant in wastewater treatment, boiler water treatment.
Others： Anti-adhesive agent in rubber production, pigment additive, component of fire extinguishers, etc.
| Serial No. | Indicator | Standard | |
| ⅠType | Ⅱ Type | ||
| 1 | Appearance | White blocky solid | |
| 2 | Calcium chloride (CaCl₂) content, w/% | ≥94.0 | ≥90.0 |
| 3 | Free alkali [calculated as Ca(OH)₂], w/% | ≤0.25 | |
| 4 | Total alkali metal oxides (calculated as NaCl), w/% | ≤5.0 | |
| 5 | Water-insoluble matter, w/% | ≤0.15 | |
| 6 | Iron (Fe), w/% | ≤0.004 | |
| 7 | PH value | 6.0～11.0 | |
| 8 | Total magnesium (calculated as MgCl₂), w/% | ≤0.5 | |
| 9 | Sulfate (calculated as CaSO₄), w/% | ≤0.05 | |
| Note: "w/%" refers to mass percent (weight percent). | |||
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