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634182

Sigma-Aldrich

Calcium oxide

nanopowder, <160 nm particle size (BET), 98%

Synonym(s):

Lime, Quicklime

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About This Item

Linear Formula:
CaO
CAS Number:
Molecular Weight:
56.08
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.23

Quality Level

Assay

98%

form

nanopowder

particle size

<160 nm (BET)

bp

2850 °C (lit.)

density

3.3 g/mL at 25 °C (lit.)

SMILES string

O=[Ca]

InChI

1S/Ca.O

InChI key

ODINCKMPIJJUCX-UHFFFAOYSA-N

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General description

Calcium oxide (CaO), also known asquicklime, is an ionic compound widely recognized for its high reactivity andversatility. This product features a particle size of <160 nm, a density of3.3 g/mL at 25 °C, and an assay of 98% trace metals basis. Calcium oxideappears as a white solid and is highly hygroscopic, readily reacting withmoisture in the air. Calcium oxide is extensively utilized in variousindustrial applications, including the production of cement and glass, where itacts as a flux. It is also employed in the steel industry as a slag conditionerand in the manufacturing of calcium hydroxide through hydration. Additionally,CaO is used in water treatment processes to adjust pH levels and in theproduction of calcium-based chemicals. CaO is also used in:Synthesis of Nanoparticles:Calcium oxide serves as a precursor in the synthesis of calcium-basednanomaterials, which have applications in catalysis and drug delivery. Glass Manufacturing: Fluxing Agent: CaO is used as a flux inglassmaking to lower the melting point of silica, improving the melting processand enhancing the properties of the glass.

Application

  • Use of Calcium Oxide in Sustainable Concrete Production: Investigates the role of calcium oxide in enhancing the anti-carbonation properties of alkali-activated slag concrete, suggesting its utility in sustainable building practices (P Shi et al., 2024).
  • Calcium Oxide from Agroindustry Waste for Dental Applications: Evaluates the synthesis of calcium oxide nanoparticles from eggshell waste, focusing on their potential in promoting dental tissue regeneration (J do Amparo Madureira et al., 2024).
  • Calcium Oxide in High-Ash Coal Slime Remediation: Discusses the use of calcium oxide in soil amendments derived from high-ash coal slime, enhancing adsorption performance for environmental cleanup (Y Tian et al., 2024).
  • Development of Calcium Oxide-Based Activators: Details the use of waste calcium oxide fly ash as an activator in the vulcanization of natural rubber, reducing the need for zinc oxide and enhancing environmental sustainability (W Naebpetch et al., 2024).

Legal Information

Product of Engi-Mat Co.

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

does not flash

Flash Point(C)

does not flash

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Arup Roy et al.
Journal of biomedical nanotechnology, 9(9), 1570-1578 (2013-08-29)
The high degree of microbial diseases and their multidrug resistant properties make the researchers to develop new class of antimicrobial agents. A modern and innovative approach of drug development is the use of metallic nanoparticles as new formulations of antimicrobial
M Lopes et al.
Poultry science, 92(3), 638-644 (2013-02-26)
Testing different management practices can help to identify conditions that decrease or even eliminate pathogenic bacteria in poultry litter. A trial was conducted to evaluate the effects of daily manual stirring (rotation of the litter with a pitchfork) for the
Marco Faustini et al.
Nanoscale, 5(3), 984-990 (2012-12-19)
We report the simple preparation of ultra-thin self-assembled nanoperforated titanium calcium oxide films and their use as reactive nanomasks for selective dry etching of silicon. This novel reactive nanomask is composed of TiO(2) in which up to 50% of Ti
María Nazaret González-Alcaraz et al.
Journal of environmental management, 116, 72-80 (2013-01-08)
The aim of this study was to identify the effectiveness of liming in combination with vegetation for the recovery of slightly acidic, saline soils of eutrophic wetlands affected by mine wastes, under fluctuating flooding conditions. Simulated soil profiles were constructed
Sebastião Roberto Soares et al.
Waste management (New York, N.Y.), 33(1), 175-183 (2012-11-06)
The establishment of rules to manage Health Care Waste (HCW) is a challenge for the public sector. Regulatory agencies must ensure the safety of waste management alternatives for two very different profiles of generators: (1) hospitals, which concentrate the production

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