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Calcium hydroxide, commonly known as slaked lime or hydrated lime, has the chemical formula Ca(OH)₂. It is a common inorganic base widely used in numerous fields such as chemical industry, environment protection, and construction, playing an essential role.
Product Characteristics
Appearance and Properties: It appears as a white powdery solid with a fine texture. In a high - purity state, it has a pure white color and no obvious impurities.
Solubility: It is slightly soluble in water. Its aqueous solution is commonly known as limewater and has a certain alkalinity. As the temperature rises, the solubility of calcium hydroxide in water slightly decreases.
Chemical Properties: It has strong alkalinity and can undergo neutralization reactions with acids to form salts and water. For example, it reacts with hydrochloric acid to produce calcium chloride and water. In addition, it can react with acidic oxides such as carbon dioxide to form calcium carbonate precipitate, and this property is often used to detect carbon dioxide gas. It is prone to absorb carbon dioxide in the air and gradually deteriorate into calcium carbonate.
Calcium hydroxide with high purity of 99.5% is a high quality chemical product with numerous applications and advantages in various fields. Here is a detailed introduction:
Environmental Protection
Wastewater Treatment: It is effectively used to neutralize acidic wastewater, adjusting its pH value to meet the discharge standards. Meanwhile, it can react with heavy metal ions in the wastewater, forming insoluble hydroxide precipitates, which helps to remove heavy metal ions.
Flue Gas Desulfurization: As a desulfurizing agent, it reacts with sulfur dioxide in the flue gas to produce substances such as calcium sulfite and calcium sulfate, thereby reducing the emission of sulfur dioxide and minimizing air pollution.
Chemical Industry
Raw Material: It serves as a crucial raw material for the production of various calcium salts, including calcium carbonate, calcium chloride, and calcium nitrate. In the rubber industry, it can be used as a filler and reinforcing agent to enhance the performance of rubber products. In the paint industry, it is utilized to prepare various coatings, improving their performance and stability.
Participation in Organic Reactions: In some organic synthesis reactions, it acts as a basic catalyst to promote the progress of reactions. For example, it plays an important role in the hydrolysis reaction of esters and halogen - containing hydrocarbons.
Medicine
Dental Treatment: It is commonly used in root canal treatment due to its antibacterial, anti - inflammatory, and tissue - healing - promoting effects. It can neutralize the acidic substances produced by inflammation, inhibit bacterial growth, and induce the formation of hard tissues, which is beneficial for the repair of periapical lesions.
Pharmaceutical Intermediate: It is an important intermediate for the synthesis of some drugs, such as antibiotics and vitamins.
Food Industry
Acidity Regulator: It can be used to adjust the pH value of food, making the food reach an appropriate acidity and improving its flavor and quality. For example, it is used as an acidity regulator in jams, jellies, and beverages.
Nutritional Fortifier: Since calcium is an essential nutrient for the human body, the appropriate addition of calcium hydroxide can be used as a nutritional fortifier in food to increase the calcium content and help the human body absorb calcium.
High Purity: The high purity of 99.5% means that the content of impurities in calcium hydroxide is extremely low. This enables it to play a more precise role in various applications and reduces the impact of impurities on reactions or product quality. For example, in the pharmaceutical field, high - purity calcium hydroxide can ensure the safety and effectiveness of drugs; in the electronics industry, when used to prepare electronic materials, it can ensure the stable performance of materials.
High Reactivity: The high - purity calcium hydroxide has a relatively regular crystal structure and many active sites on the surface, which leads to high reactivity with other substances. In wastewater treatment, it can quickly react with acidic substances to improve the treatment efficiency. In chemical synthesis, it can make the reaction more rapid and complete, increasing the yield and quality of products.
Stable Quality: Due to its high purity and low impurity content, the quality difference between different batches of 99.5% purity calcium hydroxide is small. It can provide a stable raw material supply for production enterprises, which is conducive to ensuring the consistency of product quality. This is particularly important for large - scale production and the production of high - end products. For example, in the high - end coatings and plastics industries, the stable quality of raw materials helps to produce products with stable performance and excellent quality.
Item | Specification | Test Result |
Calcium Hydroxide (Ca(OH)₂) Content | ≥99.5% | 99.6% |
Appearance | White Powder | White Powder |
pH Value (10% Aqueous Solution) | 12.4 - 12.6 | 12.5 |
Calcium Carbonate (CaCO₃) Content | ≤0.3% | 0.25% |
Iron (Fe) Content | ≤0.005% | 0.003% |
Heavy Metals (Calculated as Pb) Content | ≤0.002% | 0.0015% |
Hydrochloric Acid Insoluble Substances Content | ≤0.05% | 0.04% |
Fineness 300 Mesh | 95-97% | 96.21% |
Qualification Certificate
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: How do you control quality?
A: Our factory is equipped with professional technicians to control the quality, and the inspectors conduct a sample test every 2 hours to ensure the quality of our production. We also accept BV, SGS or any other third party inspection.
Q: Where is your factory?
A: Our factory is located in Changshu, Jiangsu Province, welcome to visit us at any time.
Q: Do you offer custom calcified products?
A: We offer various grades of calcium products to meet the needs of our customers.
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.
