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Sodium Silicate

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Identification
Molecular formula
Na4SiO4
CAS number
1344-09-8
IUPAC name
tetrasodium;silicate
State
State

At room temperature, sodium silicate can exist as both a solid and in solution form. The solid form can be amorphous or crystalline depending on the specific type, while the liquid form is a viscous solution that can appear colorless or slightly colored depending on concentration and impurities.

Melting point (Celsius)
1 088.00
Melting point (Kelvin)
1 361.15
Boiling point (Celsius)
1 013.00
Boiling point (Kelvin)
1 286.15
General information
Molecular weight
184.04g/mol
Molar mass
184.0430g/mol
Density
2.5000g/cm3
Appearence

Sodium silicate appears as a white solid or a colorless, transparent to translucent liquid. In its solid form, sodium silicate may appear as a powder, granular, or glass-like crystals depending on its hydration state. The liquid forms of sodium silicate are generally known as water glass, which is a viscous, alkaline solution.

Comment on solubility

Solubility of Tetrasodium Silicate

Tetrasodium silicate (Na4SiO4), also known as sodium silicate, exhibits interesting solubility characteristics that make it a valuable compound in various applications.

This compound is characterized by its:

  • High solubility in water: Tetrasodium silicate is highly soluble in water, dissolving to form an alkaline solution. This property is crucial for its use in detergents and cleaning agents.
  • Viscosity changes: The solubility of tetrasodium silicate can lead to increases in the viscosity of the solution, which is a property that contributes to its effectiveness in certain formulations.
  • pH levels: When dissolved, it produces a strongly alkaline solution (typically with a pH between 11 and 13), which affects its interaction with other materials.

Additionally, the solubility of tetrasodium silicate is influenced by factors such as:

  1. Temperature: Higher temperatures generally increase solubility.
  2. Concentration: As the concentration of the solution increases, the dissolution rate may decline due to saturation limits.
  3. Presence of other ions: The presence of other soluble salts or compounds can either enhance or inhibit the solubility, depending on interactions.

In conclusion, the remarkable solubility of tetrasodium silicate in water empowers its versatility across many industrial and household applications. Its solutions play vital roles in cleaning processes, ceramics, and maintenance of structural integrity in various products.

Interesting facts

Interesting Facts about Tetrasodium Silicate

Tetrasodium silicate, also known by its IUPAC name tetrasodium 3,3-dioxido-1-silacyclobutane-1,1-diyl, is an intriguing compound with a variety of applications in the chemical industry. Here are some fascinating highlights:

  • Water Glass: Tetrasodium silicate is commonly referred to as "water glass" or "liquid glass." This term emphasizes its glass-like properties when it forms a solid state.
  • Environmental Benefits: Due to its ability to act as a binder and emulsifier, tetrasodium silicate plays a vital role in creating environmentally friendly cleaning products. Its use can significantly reduce the need for harsh chemicals.
  • Applications in Industry: This compound is widely used in various industries, including:
    • Construction: Used in the manufacture of cements and as a binding agent.
    • Detergents: Acts as a builder in washing powders to enhance cleaning efficiency.
    • Paper and Textile: Employed in the treatment of textiles and paper to improve their strength and durability.
  • Interesting Reaction: Tetrasodium silicate can be hydrolyzed in the presence of acids or certain minerals, forming silicic acid and sodium ions. This reaction is a fundamental aspect of its utility in various chemical processes.
  • Health and Safety: While generally considered safe, it's important to handle tetrasodium silicate with care, as it may cause irritation to eyes and skin upon contact. Always follow safety protocols when working with the compound.

In conclusion, tetrasodium silicate is more than just a simple salt; it is a compound that bridges various industries while promoting sustainability and efficiency. Its unique properties continue to inspire innovations in the fields of chemistry and materials science.

Synonyms
SODIUM ORTHOSILICATE
13472-30-5
Tetrasodium orthosilicate
Dryorth
Silicic acid (H4SiO4), sodium salt (1:4)
TEU2JIC5PA
Silicic acid (H4SiO4), tetrasodium salt
UNII-TEU2JIC5PA
EINECS 236-741-3
NEOORTHO 80
ORTHO 65
METSO 200
DTXSID6065501
SODIUM SILICATE (NA4SIO4)
Silicic acid (H4SiO4), sodium salt
SODIUM ORTHOSILICATE (NA4SIO4)
TETRASODIUM SILICATE (NA4SIO4)
SODIUM SILICATE (NA2(SIO4)0.5)
DTXCID2034259
236-741-3
239-981-7
15859-24-2
UN1759
tetrasodium;silicate
MFCD00014252
Sodium silicate (ortho)
Sodiumorthosilicate
Na4O4Si
SCHEMBL17238
NAA47230
DB-210180
NS00087377
S15075
Q4337153