Calcium Oxide Powder Reagent Grade

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Burnt lime, commonly known as calcium oxide (CaO), is a frequently used chemical substance. It is a white, caustic, alkaline, and crystalline solid at ambient temperature. Lime refers to calcium- containing inorganic compounds made up of calcium carbonates, oxides, and hydroxides, as well as silicon, magnesium, aluminum, and iron. Quicklime, on the other hand, refers to calcium oxide as a single chemical component. Chemicals in the Reagent Grade have a high purity and are best utilized for analytical purposes. They're useful in research investigations since they produce consistent, trustworthy, and repeatable findings. In the United States of America (USA), Lab Alley sells its high-quality Calcium Oxide Powder, Reagent Grade online at Because of its high purity level, this Lab Alley product is highly recommended for labs and commercial purposes.

Information On Calcium Oxide From Wikipedia

Calcium oxide (CaO), commonly known as quicklime or burnt lime, is a widely used chemical compound. It is a white, caustic, alkaline, crystalline solid at room temperature. The broadly used term "lime" connotes calcium-containing inorganic materials, in which carbonates, oxides and hydroxides of calcium, silicon, magnesium, aluminium, and iron predominate. By contrast, quicklime specifically applies to the single chemical compound calcium oxide. Calcium oxide that survives processing without reacting in building products such as cement is called free lime. Quicklime is relatively inexpensive. Both it and a chemical derivative (calcium hydroxide, of which quicklime is the base anhydride) are important commodity chemicals. Read more here.

Calcium Oxide Uses 

Calcium oxide is widely used in industry, e.g., in making porcelain and glass; in purifying sugar; in preparing bleaching powder , calcium carbide, and calcium cyanamide; in water softeners; and in mortars and cements. In agriculture it is used for treating acidic soils (liming). Read more here.

Calcium Oxide pH 

It is a white to pale yellow powder with a density of 3.35 g/cm3. Its melting point is 2572 °C and its boiling point is 2853 °C. It is soluble in acids, glycerol and a sugar solution. If dissolved in water (Ca(OH)2) exhibits a pH of 12.5. Read more here.

Why Is Calcium Oxide A Basic Oxide?

Basic oxides -it is a complex chemical substance oxides, which form a salt with the chemical reaction with acids or acidic oxides and do not react with bases or basic oxides. For example, the basic oxides include the following: K2O (potassium oxide), CaO (calcium oxide), FeO (iron oxide 2-valent). Read more here.

Why Is Calcium Oxide Used As A Drying Agent? 

Calcium oxide is a basic drying agent that is suitable for dehydrating neutral and basic gases, amines, low-boiling alcohols, and ethers. Read more here.

What Happens When Calcium Oxide Reacts With Water?

When calcium oxide (chemical formula: CaO) reacts with water (chemical formula: H2O), the following reaction takes place: The product of this reaction is calcium hydroxide, also known as slaked lime. Thus, when calcium oxide reacts with water, slaked lime is produced. Read more here.

Calcium Oxide Facts

Calcium oxide is often used to "lime" lake waters that have been acidified by acid rain. It reacts with and neutralizes acids in the lake formed when nitric and sulfuric acid in acid rain are carried to earth by rain, snow, sleet, and other forms of precipitation. Read more here.

Calcium Oxide Safety

Because of vigorous reaction of quicklime with water, quicklime causes severe irritation when inhaled or placed in contact with moist skin or eyes. Inhalation may cause coughing, sneezing, labored breathing. It may then evolve into burns with perforation of the nasal septum, abdominal pain, nausea and vomiting. Although quicklime is not considered a fire hazard, its reaction with water can release enough heat to ignite combustible materials. Read more here.


Calcium Oxide Powder, Reagent Grade Features:

Ammonium Hydroxide Ppt 1.0%
Chloride 0.005%
Heavy Metals (as Pb) 0.01%
Oxidizing Substances 0.003%
Sulfate 0.01%
Insoluble in CH3COOH 1.0%
Barium 0.005%
Heavy Metals (as Pb) 5 ppm
Iron 0.1%
Loss on Ignition 5.0%
Nitrate 0.01%
Sulfate 0.1%
Zinc 0.015%
Common Uses
  • Reagent
  • Dehydrating agent
Commercial/Industrial Application
  • High grade steel manufacturing
  • Paper industry
  • Cement production
  • Fertilizer industries
Safety and Handling

Calcium Oxide Powder Reagent Shipping Information:
DOT: Calcium oxide, 8, UN1910, PG III

Please contact us to request a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for Calcium Oxide Powder Reagent.

Specifications and SDS

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