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Dicalcium silicate

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Identification
Molecular formula
Ca2SiO4
CAS number
10034-77-2
IUPAC name
dicalcium;silicate
State
State

At room temperature, dicalcium silicate is in a solid state. It is a key component of Portland cement and is known for its slow hydration properties. The compound is stable and remains solid under normal conditions, only undergoing changes with high temperatures or moisture.

Melting point (Celsius)
2 130.00
Melting point (Kelvin)
2 403.15
Boiling point (Celsius)
1 540.00
Boiling point (Kelvin)
1 813.15
General information
Molecular weight
172.24g/mol
Molar mass
172.2430g/mol
Density
3.2800g/cm3
Appearence

Dicalcium silicate is typically found in a crystalline form. It can appear as a whitish to pale gray powder. When the compound is part of a clinker phase in the production of cement, it is present in the form of beta-dicalcium silicate (belite), which has a distinct crystalline structure. Its appearance can vary slightly depending on the precise method of production and impurities present.

Comment on solubility

Solubility of Dicalcium Silicate

Dicalcium silicate, represented by the chemical formula Ca2SiO4, is a fascinating compound with specific solubility characteristics that make it significant in various applications. Its solubility in water is quite limited, which can be attributed to the following factors:

  • Low Reactivity: Dicalcium silicate is known for its low reactivity with water, resulting in a minimal dissolution rate.
  • Solid-state Behavior: In its crystalline form, dicalcium silicate remains stable and does not readily dissociate into ions in aqueous solutions.
  • Temperature Dependence: Solubility can vary slightly with temperature; however, it generally remains low across a range of thermal conditions.

Generally, the solubility of dicalcium silicate in water can be considered negligible. As a result, it often requires other methods, such as thermal treatment or chemical modification, to facilitate its interactions in solution or enhance its reactivity.

In summary, while dicalcium silicate serves essential roles, particularly in construction materials and cement production, its limited solubility in water highlights its stability and suggests that its applications may often involve solid-state processes.

Interesting facts

Interesting Facts about Dicalcium Silicate

Dicalcium silicate is a fascinating compound of great significance in various fields, especially in the construction and materials science industries. Here are some intriguing details:

  • Role in Cement: Dicalcium silicate, commonly referred to as alite when mixed with other compounds, is a critical component of Portland cement. It contributes to the strength and durability of concrete.
  • Hydration Process: Upon hydration, dicalcium silicate reacts with water to form calcium silicate hydrate (C-S-H) and calcium hydroxide. This process is pivotal in the development of concrete's mechanical properties.
  • Heat of Hydration: Dicalcium silicate has a lower heat of hydration compared to other cement compounds, making it advantageous in large-scale concrete applications where excessive heat generation could be problematic.
  • Industrial Uses: Besides its primary role in cement, dicalcium silicate is utilized in the manufacturing of ceramics, as a component in glass production, and even as a food additive in certain cases.
  • Natural Occurrences: This compound can also be found in nature, forming part of minerals such as gehlenite and mayenite, which occur in volcanic rocks and certain metamorphic formations.

As a chemical compound, dicalcium silicate showcases the remarkable intersection of chemistry and engineering. Its behavior in concrete and its role in construction materials illustrate how chemical science can directly impact durability and strength in the built environment. As scientific research progresses, there are ongoing studies to explore enhanced formulations of this compound, further advancing its applications.

In the words of a notable chemist, “Understanding materials at the molecular level can unlock not only their potential but also innovative pathways in technology and infrastructure.”
Dicalcium silicate is indeed a compound that embodies this principle, highlighting its contribution to both chemistry and civil engineering.

Synonyms
1344-95-2
Calsil
Micro-cel
Calcium hydrosilicate
CS lafarge
Toyofine A
Florite R
Microcal ET
Starlex L
Calflo E
Silmos T
Silene EF
Micro-cel A
Micro-cel B
Micro-cel C
Micro-cel E
Micro-cel T
Promaxon P60
Calcium monosilicate
Stabinex NW 7PS
Micro-cel T26
Micro-cel T38
Microcal 160
HSDB 705
EINECS 215-710-8
SW 400
Calcium silicate, synthetic nonfibrous
Calcium orthosilicate
UNII-S4255P4G5M
EC 215-710-8
S4255P4G5M
NSC 57629
Grammite
Calcium pectolith
Head Cold
Micro-Cel T-41
DTXSID4029648
215-710-8
calcarea silicata
calcium silicate
calcium silicate (ii)
calcium silicate (mart.)
e-552
e552
huberderm 1000
ins no.552
ins-552
solex
synthetisch calciumsilicaat/dutch/
Silicic acid, calcium salt
Dicalcium silicate
dicalcium;silicate
dicalcium orthosilicate
Calcium silicate [NF]
Calcium silicate (NF)
Marimet 45
Micro-cel T41
Calcium silicate, synthetic
MFCD00015979
DTXSID5049570
Synthetisch calciumsilicaat /Dutch/
AKOS015915657
DB-254178
DB-254424
D03309
Q416365