Versatile and Essential: Finding Calcium Hydroxide for Sale

17 . Dec, 2025

Calcium hydroxide, commonly known as slaked lime or hydrated lime, is a white powder with a wide range of critical applications. Its chemical formula is Ca(OH)₂, and it is produced by reacting calcium oxide (quicklime) with water. If you’re searching for calcium hydroxide for sale, you’re likely involved in an industry that relies on its unique properties. One of its primary uses is in water treatment and purification. Calcium hydroxide is used to adjust the pH of water, softening it and helping to precipitate out impurities and heavy metals, making water safer for consumption and industrial use. In construction, it is a key component in mortars, plasters, and stuccos, where it contributes to workability and long-term strength through a process called carbonation. The food industry uses food-grade calcium hydroxide in processes like nixtamalization of corn for tortillas and as a pH regulator. In agriculture, it is applied to soil to correct acidity, improving crop yields. Environmental applications include flue gas desulfurization to remove sulfur dioxide from power plant emissions. When you look for calcium hydroxide for sale, it’s crucial to source it from a reliable supplier who can provide the correct grade (industrial, food, or reagent) and consistent purity to ensure the effectiveness and safety of your process.

The Universal Identifier: Understanding CAS No 1305 78 8

In the world of chemicals, precise identification is non-negotiable. This is where the CAS No 1305 78 8 comes in. The CAS Registry Number, or CAS RN, is a unique numerical identifier assigned by the Chemical Abstracts Service (CAS) to every chemical substance described in the open scientific literature. The number cas no 1305 78 8 specifically identifies Calcium Oxide. This universal "fingerprint" eliminates confusion that can arise from using multiple common names like quicklime, burnt lime, or unslaked lime. No matter the language or regional terminology, cas no 1305 78 8 always and exclusively refers to calcium oxide. This is critically important for procurement, safety documentation (SDS/MSDS), international shipping, regulatory compliance, and technical specifications. When you see a product listed with cas no 1305 78 8, you can be 100% confident it is pure calcium oxide (CaO). Suppliers use this number on product labels, safety data sheets, and certificates of analysis to ensure clarity. For buyers, specifying cas no 1305 78 8 in inquiries and orders guarantees you receive the correct chemical, preventing costly errors that could occur if a supplier misinterpreted a common name. It is the fundamental key to safe and accurate trade in industrial chemicals.

The Reactive Workhorse: Applications of Calcium Oxide CAS No

Calcium oxide, identified universally by its calcium oxide cas no (1305-78-8), is more commonly known as quicklime. It is a white, caustic, alkaline crystalline solid produced by heating limestone (calcium carbonate) to high temperatures in a process called calcination. The calcium oxide cas no points to a substance with incredibly diverse and vital industrial roles. Its most iconic use is in steelmaking, where it is a primary flux to remove impurities (silica, phosphorus, sulfur) as slag. In construction, calcium oxide is the starting material for cement; when mixed with water, it undergoes a vigorous exothermic reaction to form calcium hydroxide (slaked lime), which is then used in mortars and plasters. This same reactivity makes it an excellent desiccant (drying agent) for gases and solvents. In environmental management, it is used in large quantities for flue gas desulfurization in power plants to scrub sulfur dioxide from emissions. The paper and pulp industry uses it in the kraft process for digesting wood chips. Furthermore, calcium oxide serves as a crucial chemical reagent in numerous organic synthesis processes. Understanding the applications linked to the calcium oxide cas no is essential for industries that depend on its high reactivity, its ability to stabilize materials, and its role as a cost-effective alkali.

Sourcing with Confidence: The Importance of the Calcium Oxide CAS Number

When procuring chemicals for industrial processes, precision is paramount. Simply asking for "quicklime" can lead to misunderstandings regarding grade, purity, or even the correct compound. This is why the calcium oxide cas number is your most important tool. The calcium oxide cas number 1305-78-8 provides an unambiguous, international standard for specification. Using the calcium oxide cas number in all communications—from initial requests for quotes to final purchase orders—ensures there is no room for error. It tells the supplier exactly what you need. A reputable supplier will prominently display the calcium oxide cas number on all product documentation. This number should be front and center on the product's Safety Data Sheet (SDS), which details handling, hazards, and first aid measures—critical information for workplace safety. It will also be on the Certificate of Analysis (CoA), which verifies the product's purity, chemical composition, and physical properties against your required specifications. Whether you need a specific mesh size (like 1-2mm granules or a 325-800 mesh powder) or a particular grade, the calcium oxide cas number forms the foundation of that specification. By insisting on products clearly identified with the correct calcium oxide cas number, you protect your operation from receiving incorrect or substandard materials, ensuring process consistency, product quality, and the safety of your personnel.

Sourcing high-quality calcium oxide and calcium hydroxide is fundamental to the success of countless industrial operations. We specialize in providing these essential lime products, serving a diverse range of sectors from construction and metallurgy to water treatment and environmental protection. Our product, Calcium Oxide (Quicklime), is available in multiple forms to suit various applications: granulated sizes like 1-2mm and 2-4mm for controlled reactions in processes like steelmaking, and fine powders ranging from 325 to 800 mesh for use as a reagent or additive where high surface area is critical. The material is a white powder or stone, with the definitive identifier CAS No.: 1305-78-8. We understand the chemistry and the applications. Our calcium oxide is produced to exacting standards, ensuring high purity and reactivity. When it reacts with water, it produces calcium hydroxide (slaked lime), completing the lime cycle. We can supply both ends of this process. Whether your project requires the intense reactivity of quicklime for soil stabilization or waste treatment, or the controlled alkalinity of hydrated lime for water purification or construction, we provide consistent, reliable products backed by technical data and the unambiguous identification of CAS numbers. Our commitment is to be more than a vendor; we are a partner who understands that the quality of your raw materials directly impacts the quality, safety, and cost-effectiveness of your final product or process. Versatile and Essential: Finding Calcium Hydroxide for Sale

Versatile and Essential: Finding Calcium Hydroxide for Sale

Don't let sourcing challenges slow down your production or compromise your project specifications. Whether you need the reactive power of calcium oxide or the versatile utility of calcium hydroxide, having a dependable supplier is key.

Visit our website or contact our sales team directly to explore our full range of lime products. Get detailed specifications for our quicklime (identified by CAS No. 1305-78-8) in various mesh sizes and forms. Request a quote tailored to your volume and application needs. Our technical experts are available to help you select the perfect grade—be it for construction, water treatment, steelmaking, or environmental applications—ensuring optimal performance and value.

Take the guesswork out of chemical procurement. Choose a supplier defined by clarity, quality, and reliability. Reach out to us today to discuss your requirements for calcium hydroxide for sale or calcium oxide, and experience the difference that comes with sourcing the right chemical, the right way.

Calcium Oxide & Hydroxide FAQs

What is the main difference between Calcium Oxide and Calcium Hydroxide?

Calcium Oxide (CaO, CAS 1305-78-8), or quicklime, is produced by calcining limestone. It is highly reactive, especially with water. Calcium Hydroxide (Ca(OH)₂), or slaked/hydrated lime, is produced by carefully adding water to calcium oxide. It is less caustic than quicklime and is the form most commonly used in water treatment, construction mortars, and soil amendment. They are two different points on the "lime cycle."

Why is the CAS number so important when ordering?

The CAS number (like 1305-78-8 for Calcium Oxide) is a unique, universal identifier for a chemical substance. Common names can vary by region and industry. Using the CAS number in specifications and orders eliminates all ambiguity, ensuring you receive exactly the chemical compound you need for your process, which is critical for safety, regulatory compliance, and product consistency.

What does the mesh size (e.g., 325-800mesh) mean for your Calcium Oxide powder?

Mesh size refers to the fineness of the powder. It indicates the number of openings in a sieve per linear inch. A 325-mesh powder is finer than a 100-mesh powder. Finer powders (like 800 mesh) have a much larger surface area, which makes them react more quickly and completely. The correct mesh size is chosen based on the application—finer for chemical reactions or as a filler, coarser for slower-release applications like in construction or metallurgy.

Is Calcium Oxide safe to handle?

Calcium Oxide (quicklime) requires careful handling. It is caustic and can cause severe skin and eye irritation upon contact. Its reaction with water is highly exothermic (produces intense heat). It must be stored in a cool, dry place in airtight containers to prevent it from reacting with atmospheric moisture. Always consult and follow the Safety Data Sheet (SDS) and use appropriate personal protective equipment (PPE) like gloves, goggles, and dust masks.

Can you supply both technical grade and high-purity Calcium Oxide?

Yes, we cater to different industry needs. We supply standard technical-grade Calcium Oxide (CAS 1305-78-8) suitable for most industrial applications like construction, steelmaking, and water treatment. For more sensitive applications requiring higher purity levels, we can provide grades that meet those specific specifications. Please discuss your application details with our team so we can recommend the most suitable product.

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