1250-Mesh 98% High-Purity Calcium Hydroxide-A Quality Choice for the Fine Chemicals Sector

In fields such as fine chemicals, environmental treatment, and high-end manufacturing, the purity and fineness of raw materials directly determine the quality and efficiency of end products. As a premium chemical raw material characterized by both high purity and ultra-fineness, 1250-mesh 98% high-purity calcium hydroxide has become the preferred alkaline material across various industries, thanks to its stable physicochemical properties and outstanding application performance. It is produced from high-quality limestone through precise calcination, fine slaking, multi-stage grinding, and rigorous purification processes, perfectly balancing chemical purity and physical fineness, and providing reliable support for the high-end demands of various industries.

The core definition of 1250-mesh 98% high-purity calcium hydroxide stems from two key indicators: purity and fineness. From a chemical perspective, its effective calcium hydroxide (Ca(OH)₂) content reaches as high as 98%, with extremely low impurity levels—acid-insoluble substances ≤ 0.1%, iron content ≤ 0.065%, and moisture content ≤ 0.5%. All indicators far exceed the standards of ordinary industrial-grade calcium hydroxide and comply with high industry standards such as HG/T 4120-2009. In terms of physical properties, the 1250-mesh grade corresponds to a particle size with D97 ≤ 12 μm. The powder is uniformly fine, milky white in color, with a whiteness degree ≥ 90, free of or containing minimal black spots, presenting a clear and bright appearance and a smooth, impurity-free texture.

●  Core Features and Advantages

1. Ultra-High Purity with Minimal Impurity Interference

A purity level of 98% means a high proportion of active ingredients, with impurities such as heavy metals and acid-insoluble substances strictly controlled at extremely low levels. This feature makes it particularly suitable for impurity-sensitive fields including high-end chemical synthesis, food and pharmaceutical excipients, and electronic material processing. In chemical reactions, it can participate precisely, preventing side reactions caused by impurities or adverse effects on product purity. In contact applications such as food modification and pharmaceutical intermediates, it meets stringent safety standards, ensuring the safety and compliance of end products.

2. Ultra-Fine Particle Size for Excellent Reaction Activity

The ultra-fine particle size of 1250 mesh endows it with a large specific surface area (usually over 20 m²/g). Compared with conventional products of 325 mesh or 800 mesh, its contact area with other substances is significantly increased, boosting reaction rates by 30%–50%. The lime milk suspension prepared from it exhibits exceptional stability, with a much lower sedimentation rate than conventional products after 24 hours of standing. It enables rapid and accurate acid neutralization and pH adjustment, while greatly reducing the risk of pipeline blockage and improving the automation efficiency and continuity of industrial production. In addition, the ultra-fine particles have excellent dispersibility, resisting agglomeration, and can disperse evenly in composite materials, coatings, and other fields, enhancing the overall performance of the products.

3. High Whiteness for Both Aesthetic and Functional Requirements

With a whiteness degree ≥ 90 and a clear blueish-white appearance, free of obvious impurity spots, the product not only meets the color requirements of industries such as coatings, papermaking, and plastics, avoiding color deviations of end products caused by raw material discoloration, but also plays an auxiliary role in "whitening" and "brightening" in high-end decorative materials and food additives, satisfying both functional and aesthetic needs.

4. Outstanding Cost-Effectiveness and High Comprehensive Value

The dual advantages of high purity and high activity reduce the dosage by 20%–30% compared with ordinary calcium hydroxide to achieve the same application effect. For example, in industrial wastewater treatment, its high-efficiency neutralization and adsorption capacity reduce raw material dosage and treatment frequency. In flue gas desulfurization, its adsorption capacity is 2–3 times that of ordinary calcium hydroxide, with a utilization rate as high as 85%–90%, significantly lowering the comprehensive operating costs of end users. Meanwhile, it is safe and convenient for transportation and storage, further enhancing its usability.

On www.cncalcium.com, we specialize in supplying high-purity calcium hydroxide products that are suitable for a wide range of applications, including the chemical, environmental protection, and agricultural sectors. If you're interested in learning more about calcium hydroxide (slaked lime), please feel free to visit our official website at www.cncalcium.com.