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Calcium oxide

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Identification
Molecular formula
CaO
CAS number
1305-78-8
IUPAC name
oxocalcium
State
State

At room temperature, calcium oxide is typically a solid.

Melting point (Celsius)
2 572.00
Melting point (Kelvin)
2 845.00
Boiling point (Celsius)
2 850.00
Boiling point (Kelvin)
3 123.00
General information
Molecular weight
56.08g/mol
Molar mass
56.0770g/mol
Density
3.3400g/cm3
Appearence

Calcium oxide appears as a white to pale yellow, amorphous or crystalline solid. It is often referred to as quicklime or burnt lime.

Comment on solubility

Solubility of Oxocalcium

Oxocalcium, with its chemical formula often represented as CaO·Ca(OH)2, exhibits distinct solubility characteristics that are noteworthy in various applications. Here are some key points regarding its solubility:

  • Water Solubility: Oxocalcium is generally regarded as sparingly soluble in water. This means that while some amount can dissolve, it is not enough to form a true solution.
  • Effect of Temperature: The solubility of oxocalcium can increase with rising temperatures. In many cases, higher temperatures lead to enhanced solvation of the ions.
  • pH Dependency: The solubility is significantly influenced by the pH of the solution. In alkaline conditions, oxocalcium tends to dissolve more readily due to the formation of soluble hydroxides.

Moreover, it is essential to note that while oxocalcium may not be highly soluble, its moderate solubility plays a vital role in various chemical processes and applications, particularly in agricultural and construction settings. As detailed in studies, “the limited solubility of oxocalcium allows it to effectively react with other compounds in soil, enhancing nutrient availability for crops.”

Thus, understanding the solubility behavior of oxocalcium not only helps in its application but also in predicting its interactions in different environments.

Interesting facts

Interesting Facts About Oxocalcium

Oxocalcium, often referred to as a compound of calcium, is a fascinating substance worth exploring for its unique properties and applications. Here are some engaging facts:

  • Composition: Oxocalcium is primarily composed of calcium and oxygen, leading to a diverse range of characteristics that make it significant in various chemical processes.
  • Role in Nature: As a calcium compound, oxocalcium plays an essential role in biological systems; calcium ions are crucial for nerve function, muscle contraction, and blood coagulation.
  • Industrial Applications: Oxocalcium is utilized in the production of various materials such as cements and ceramics, contributing to construction and manufacturing industries due to its stability and reactivity.
  • Chemical Reactions: It is involved in several important chemical reactions, including the formation of hydroxides and carbonates, demonstrating its versatility in synthesis and analytical chemistry.
  • Historical Significance: Calcium compounds, including oxocalcium, have been studied for centuries, with early chemists recognizing their importance in both geology and biochemistry.
  • Environmental Impact: Understanding compounds like oxocalcium helps scientists assess their roles in environmental processes, such as soil chemistry and mineralization.

In the words of renowned chemist Linus Pauling, "The best way to have a good idea is to have a lot of ideas." Oxocalcium serves as a prime example, inspiring both exploration and innovation in the fields of chemistry and materials science.

Its study not only enhances our understanding of chemical behavior but also contributes to advancements in technology and environmental sustainability. Whether for its natural functions or industrial relevance, oxocalcium continues to be an intriguing subject of research.

Synonyms
1305-78-8
oxocalcium
Gebrannter kalk
Calcium monoxide
CALX
Calcium oxide (CaO)
Lime [USP]
Calcia
Calxyl
Lime (USP)
Airlock
Chaux vive
Quick lime
Calx usta
Rhenosorb C
Rhenosorb F
Desical P
Lime, burned
Caloxal CPA
Caloxol W3
Vesta PP
Caloxol CP2
Calcia (CaO)
Bell CML(E)
Bell CML(P)
Caswell No. 147A
Wapniowy tlenek
QC-X
Wapniowy tlenek [Polish]
Oxyde de calcium
Oxyde de calcium [French]
CCRIS 7496
CML 21
CML 31
CML 35
HSDB 1615
EINECS 215-138-9
UNII-C7X2M0VVNH
UN1910
EPA Pesticide Chemical Code 075604
Branntkalk
Kalziumoxid
Aetzkalk
Calcium oxide, CP
Calcium oxide, 98%
Calcium Oxide Dispersion
Calcium Oxide Nanopowder
Calcium oxide (JP17)
EC 215-138-9
Calcium oxide, Reagent Grade
Tin(IV) selenide (SnSe2)
Calcium oxide, p.a., 95.0%
AKOS015903966
FC07719
Lime, meets USP testing specifications
Calcium oxide, Vetec(TM) reagent grade
Calcium oxide [UN1910] [Corrosive]
Calcium oxide, 99.995% trace metals basis
Calcium oxide, SAJ first grade, >=98.0%
Calcium oxide, SAJ special grade, >=98.0%
D01679
Q185006
Calcium oxide, ReagentPlus(R), 99.9% trace metals basis
Calcium oxide, anhydrous, powder, >=99.99% trace metals basis
Calcium oxide, nanopowder, <160 nm particle size (BET), 98%
Calcium oxide, puriss., meets analytical specification of FCC, 96-100.5% (ex ignited substance), powder (fine)