The Low Price Calcium hydroxide CAS 1305-62-0 is a strongly alkaline compound that gradually absorbs carbon dioxide from the air and transforms into calcium carbonate, exhibiting certain chemical reactivity. It is slightly soluble in water and readily soluble in acids, with a density of 22.4 g/cm³. Its clear aqueous solution is a colorless, odorless, transparent alkaline liquid with a pH of approximately 12.4, demonstrating stable and reliable performance in water treatment, environmental protection, and chemical applications.
CAS No.: 1305-62-0
EINECS NO.215-137-3
| Item | Grade I | Grade II | Grade III |
| Calcium hydroxide% | 90 | 92 | 95 |
| Fe% | 0.1 | 0.1 | 0.05 |
| MgO% | 1.0 | 1.0 | 1.0 |
| Al2O3% | / | / | 0.5 |
| P | 0.05 | 0.03 | 0.02 |
| S | 0.20 | 0.18 | 0.15 |
| HCL insoluble | 1.0 | 1.0 | 0.5 |
| Moisture | 2.0 | 2.0 | 1.0 |
| Whiteness | 85 | 88 | 90 |
| 125um Test Screen % | 0.1 | 0.05 | 0.001 |
| 45um Test Screen % | 0.5 | 0.3 | 0.1 |
1. Store the product in a cool, well-ventilated warehouse with humidity controlled below 85%.
2. Keep the packaging tightly sealed to prevent moisture absorption and ensure consistent product quality.
3.Avoid direct contact with water and store in a dry, cool, and draft-free environment to maintain long-term stability.
1. The Quality Calcium hydroxide CAS 1305-62-0 is a highly efficient neutralizing agent for acidic wastewater, widely used in wastewater treatment systems and boiler flue gas desulfurization (FGD) processes. It can significantly reduce acidity and improve environmental treatment efficiency.
2. It is often used as a functional additive or filler in the leather processing, metallurgy, coatings, petroleum lubricants, and papermaking industries, helping to improve product performance and reduce overall costs.
3. Calcium hydroxide is also widely used in stone cutting aids, soil stabilization, concrete mixing, chemical reagents, gypsum board joint fillers, construction adhesive formulations, hard water softening treatment, and plastics and fiber manufacturing, demonstrating excellent versatility and industrial practical value.
One of the key applications of calcium hydroxide is as a flocculant in water and wastewater treatment. It forms fluffy, charged solids that help remove fine particles, resulting in clearer water. Due to its low cost and low toxicity, calcium hydroxide is widely used in municipal and industrial water treatment. It is also applied in freshwater treatment to increase pH and prevent corrosion in pipelines, with a self-regulating effect that avoids over-alkalization.
Calcium hydroxide is also used in the production of ammonia (NH₃) through the reaction:
Ca(OH)₂ + 2NH₄Cl → 2NH₃ + CaCl₂ + 2H₂O
Another important application is in the pulp and paper industry, where it serves as an intermediate in the production of sodium hydroxide. This conversion is part of the causticizing step in the Kraft (sulfate) pulping process. In causticizing, slaked lime is added to green liquor—a solution primarily containing sodium carbonate and sodium sulfate, derived from the recovery boiler melt—to regenerate sodium hydroxide for reuse in the pulping cycle.
We understand that industrial customers are truly concerned with "whether it can be used long-term and whether they dare to use it in large quantities."
Strict incoming raw material testing
Full-process quality control
Outgoing batch inspection report (COA)
Compliant with conventional industrial and export standards
Every batch of Cheap Calcium hydroxide CAS 1305-62-0 undergoes testing before leaving the factory to ensure that the indicators are authentic and traceable.
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