Premium Calcium Hydroxide White Powder High Purity 99.5% Calcium Hydroxide Lime

High Purity Empowers All Scenarios, Precisely Adapts to High-End Needs | Common Name: Slaked Lime | CAS No.: 1305-62-0

Ultra-Pure Quality, Extremely Low Impurities: Active ingredient content ≥99.5%, total impurities ≤0.5%, heavy metal (lead, arsenic, etc.) residues are far lower than international standards, no harmful impurities interfere with reactions, suitable for high-end scenarios such as food and medicine.

Efficient Reaction, Stable Performance: Relying on precise process control, the powder is fine and uniform with excellent specific surface area, fast dissolution rate and strong alkaline activity. The pH value of saturated aqueous solution is stable at 12.4-12.6, and the neutralization reaction efficiency is more than 30% higher than that of ordinary products.

Multi-Scenario Adaptation, Green and Environmentally Friendly: No secondary pollution, recyclable reaction products, balancing efficiency and environmental protection, widely covering environmental protection, food, medicine, chemical industry and other fields, replacing highly corrosive reagents and reducing use risks.

Precise Parameters · Visible High Quality

                     

     

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 Company Profile

Changshu Hongyu Calcium Co., Ltd. was founded in 1984. The company has always been focused on the research, development and production of three major series of products: calcium oxide, calcium hydroxide and calcium carbonate, with a daily output of 600 tons. After more than 40 years of professional accumulation, relying on advanced production technology and strict quality control, the company has accumulated rich production experience. Our products are of high purity and low impurity, and are widely used in various fields such as chemical industry, environmental protection, agriculture and construction. With high-quality products and a good market reputation, our products are not only favored in the domestic market, but also exported to well-known enterprises in Southeast Asia, the Middle East, Africa and other regions, becoming a trusted choice for many international customers.

We have our own mine in Hubei Province, and in 2024, we invested to establish a new company: Carlison New Materials (Jingshan) Co.,Ltd., which covers an area of 40,000 square meters. The new company specializes in the production of fine chemical, pharmaceutical and food-grade calcium oxide and calcium hydroxide products. Changshu Hongyu will continue to adhere to the concept of innovation, quality and service, constantly enhance its competitiveness, provide high-quality calcium compound products and services for more industries, and work with all sectors to create a better future.

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 Certifications

 Product Photos

Full-Scenario Application · High Purity Unlocks Diversified Value

I. Environmental Protection Field (Core Application)

• Flue Gas Desulfurization: Suitable for flue gas treatment in coal-fired power plants, steel plants, etc., efficiently absorbs SO₂ with desulfurization efficiency >95%, generates recyclable gypsum without secondary pollution, replaces highly corrosive desulfurizers, and reduces equipment loss.

• Wastewater Treatment: Neutralizes acidic wastewater (electroplating, mining, chemical wastewater), rapidly precipitates heavy metal ions (Cu⊃2;⁺, Pb⊃2;⁺, etc.) with removal rate >99.8%, adjusts wastewater pH to the up-to-standard range, and helps enterprises meet environmental compliance.

• Waste Incineration Flue Gas Treatment: Adsorbs acidic gases and harmful particles in flue gas, efficiently deodorizes, complies with environmental emission standards, and promotes green industrial transformation.

II. Food Field (Compliant Application)

• Food Processing: As a food additive (E526), it is used for clarifying, deacidifying and decolorizing sugar juice in sugar industry, alkali treatment of corn to improve nutritional value, solidification of konjac gel food, with better taste than ordinary alkalis.

• Nutrition Fortification: Used for calcium fortification of infant complementary foods and plant-based drinks (almond milk, oat milk) with high bioavailability, each 100mL drink can supplement 100-150mg calcium, complying with GB 10769-2024 standard.

• Brewing and Preservation: Adjusts the pH value of beer mash (5.2-5.6) to optimize enzyme activity; neutralizes citric acid in fruit juice, reduces acid corrosion, and extends food shelf life.

III. Pharmaceutical Field (High-End Adaptation)

• Dental Materials: As root canal filling material and pulp capping agent, it has bactericidal and antiseptic effects, can neutralize inflammatory acidic products, promote dentin repair, and protect dental pulp tissue.

• Pharmaceutical Intermediates: Used in the preparation of calcium gluconate, calcium lactate and other calcium agents, as a drug leaching adjuvant and neutralizer, improving drug purity and stability.

• Disinfectants: High-concentration solutions can be used for disinfection of medical instruments without residue, suitable for the needs of pharmaceutical sterile production.

IV. Chemical Industry and Other Fields

• Chemical Synthesis: Used in the production of epichlorohydrin, propylene oxide, high-grade bleaching powder, etc., as an organic synthesis adjuvant to improve reaction purity and efficiency.

• Laboratory Use: As an analytical reagent, used for CO₂ absorption, pH adjustment and precipitation reaction, suitable for precision experimental needs.

Production Workshops

Our Advantages

We have our own mine in Hubei Province, which endows us with the following advantages:

• Stable Raw Material Supply: Owning our own mine ensures a stable supply of raw materials for calcified substances. This helps to avoid production interruptions caused by issues such as fluctuations in the raw material market and supply shortages. It guarantees the smooth progress of production plans and maintains a stable product output, enabling us to better meet customer needs and enhance customer satisfaction.

• Controllable Raw Material Quality: Our company can directly manage and monitor the mining process of the mine, and strictly control the quality of raw materials. We are able to select appropriate ore grades and qualities according to production requirements, ensuring that the mined ore meets the high standards of our products. This provides a solid foundation for producing high-quality calcified substance products and helps to enhance the market competitiveness of our products.

• Cost Advantage: Obtaining raw materials from our own mine reduces intermediate procurement links and lowers procurement costs. Moreover, in the long run, a stable raw material supply also enables our company to take the initiative in cost control and avoid the risk of cost increases due to fluctuations in raw material prices, thereby improving the company's economic benefits and profitability.

FAQ

Q: Are you a trading company or a factory?
A: We are a factory.

Q: What are your main products?
A: Calcium oxide, Calcium hydroxide, Light calcium carbonate, Heavy calcium carbonate，Nano calcium carbonate

Q: Are samples free? How long is delivery?

A: 5–10kg samples are free (freight negotiable). Regular stock delivered within 48 hours; customized orders in 7–15 days.

Q: Where is your factory?
A: Our factory is located in Changshu, Jiangsu Province, welcome to visit us at any time.

Q: Is there any possible to use my appointed lable or package?

A: Yes, If need, we would like to use lable or package according to your requirement.

Q: How do I contact you to purchase a product?
A: Below is our contact information, please feel free to contact us at any time.