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Name: Calcium Hydroxide
Chemical Formula: Ca(OH)₂
Other Names: Slaked Lime, Hydrated Lime
Molecular Weight: 74.096
Appearance: White powdery solid
Density: 2.24 g/mL (at 25°C)
Melting Point: 580°C (decomposes)
Solubility: Slightly soluble in water, insoluble in ethanol, soluble in glycerol
High purity calcium hydroxide (chemical formula: Ca(OH)₂, commonly known as slaked lime) refers to calcium hydroxide products with a purity usually above 95% (with extremely low contents of impurities such as calcium carbonate, magnesium oxide, and iron oxides). Its characteristics and advantages are closely related to its high-purity property, and it is significantly superior to ordinary calcium hydroxide in terms of performance stability, application safety, and functional efficiency.
In the plastic industry, high purity calcium hydroxide (with a purity of ≥ 95% and extremely low impurities such as calcium carbonate, iron oxides, heavy metals, etc.) is mainly used as a pH regulator, stabilizer, and filling aid. Its core advantages come from the performance stability, dispersion uniformity, and low interference with the quality of plastic products brought by high purity.
Plastics are prone to degradation (such as molecular chain breakage and discoloration) during processing and use due to environmental factors (such as high temperature, light, oxidation). High purity calcium hydroxide can enhance the aging resistance of plastics by stabilizing the system pH and inhibiting oxidation reactions.
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The Production Process of Calcium Hydroxide
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Why Choose Changshu Hongyu Calcium
We are a manufacturer integrating R&D, production and sales, with a history of over 40 years since our establishment. We own our own mines in Hubei, where the limestone raw materials boast high purity and low impurity content.
Relying on advanced production technology and strict quality control, the company professionally produces a series of high-quality calcium products such as high-purity calcium oxide, calcium hydroxide and calcium carbonate. After years of development and accumulation, the company has gained rich production experience. Our products are of high purity and low impurity, and are widely used in chemical industry, environmental protection, agriculture, construction and other fields, enjoying great popularity in the market.
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Q: Are you a trading company or a factory?
A: We are a factory.We have two factories and a limestone mine.
Q: What are the advantages of your products?
A: Our products have high purity and minimal impurities. The highest purity of calcium hydroxide is 99.5%.
Q: What payment methods are supported?
A: T/T、L/C、D/P.
Q: Do you have any certificates?
A: Yes, we have ISO9001 and SGS certifications, etc.
Q: Do you provide free samples?
A: Yes.
Packaging and Transportation
Packaging：We use plastic-woven bags and ton bags with excellent moisture-proof properties. For bulk transportation, professional protective measures are implemented to prevent the product from caking due to moisture during transportation and storage, ensuring optimal usability.
Transportation：Establishing long-term partnerships with many renowned international logistics enterprises, we offer various transportation methods, including full container loads and less-than-container loads. Customers can choose trade terms such as FOB, CIF, and EXW according to their needs, ensuring safe and timely delivery worldwide.
