Molecular sieves, 3 Å - pellets,2-3 mm , CAS No.308080-99-1

CAS: 308080-99-1 Cat. No.: M100324 Fórmula: K_nNa_12-n[(AlO₂)₁₂(SiO₂)₁₂] · xH₂O Número CE: 681-678-0

GRAU & PUREZA pellets,2-3 mm

Synonyms

MOLECULARSIEVE | Molecular sieves, 1/8'' pellets (Linde 5A) | Silicic acid, aluminum sodium salt | Sodium aluminum silicate | aluminum;sodium;dioxido(oxo)silane | MOLECULAR SIEVES, 5A | SODIUM ALUMINOSILICATE | sodium alumino-silicate | DTXSID7026021 | MO

Storage

Room temperature,Argon charged,Desiccated

Shipped In

Normal

Visão geral

Choosing a Molecular Sieve: 1. The preferential adsorption of one molecule over another depends upon pore diameter and mesh size. 2. The dynamic capacity of the silica gel for adsorbing a particular compound is governed by the internal surface area; the greater the surface area, the greater the dynamic capacity. 3. Rate of adsorption and sharpness of resolution are dependent chiefly on particle size and column packing; a fine particle size gives optimum sharpness of resolution. 4. Liquids are most readily adsorbed from solvents in which they are least soluble; a good solvent makes a good desorbing agent. 5. Highly polar liquids are readily adsorbed. Compounds having hydroxyl groups, or containing oxygen are strongly adsorbed. 6. For similar compounds, the higher the molecular weight the higher the selectivity. 7. For hydrocarbons of similar molecular weight, adsorptivity increases with the number of double bonds. Molecular sieves are crystalline metal aluminosilicates having a three-dimensional interconnecting network of silica and alumina tetrahedra. Natural water of hydration is removed from this network by heating to produce uniform cavities which selectively adsorb molecules of a specific size. The 3A form is made by substituting potassium cations for the inherent sodium ions of the 4A structure, reducing the effective pore size to ~3Å, excluding molecules of diameter >3Å (for example: ethane). The 8 to 12-mesh type is common in liquid-phase applications. Molecular sieves are considered a universal drying agent in polar and nonpolar media. Molecular sieves, 3Å is a UOP-type zeolite 3Å.It is widely employed as a sorbent. Regeneration or Activation: A saturated molecular sieve can be restored to its original capacity by regeneration, the principle of which involves changing the conditions surrounding the adsorbent to correspond to a very low equilibrium capacity. In general, the greater the difference between the equilibrium capacities of adsorption and regeneration, the more rapid and complete the regeneration. The sieve may be regenerated in one of four ways: 1. Thermal reactivation –The maximum regeneration temperature for Silica is 300°C. 2. Pressure reactivation 3. Passing an appropriate fluid through the gel bed at normal temperature and pressure. 4. Displacement of adsorbates by passing a high concentration of molecules in a fluid through the bed. The kinetics of the adsorption of water-vapor by employing molecular sieve 3Å has been studied in various temperature ranges (25-80°C and water dew points from -69 to 17°C).

Especificações

Sinónimos

MOLECULARSIEVE | Molecular sieves, 1/8'' pellets (Linde 5A) | Silicic acid, aluminum sodium salt | Sodium aluminum silicate | aluminum;sodium;dioxido(oxo)silane | MOLECULAR SIEVES, 5A | SODIUM ALUMINOSILICATE | sodium alumino-silicate | DTXSID7026021 | MO

Especificações e pureza

pellets,2-3 mm

Condições de armazenamento de armazenamento

Room temperature,Argon charged,Desiccated

Enviado em

Normal

Nomes e identificadores

Sorrisos canónicos

[O-][Si](=O)[O-].[O-][Si](=O)[O-].[Na+].[Al+3]

IUPAC Name

aluminum;sodium;dioxido(oxo)silane

InChIKey

URGAHOPLAPQHLN-UHFFFAOYSA-N

INCHI

1S/Al.Na.2O3Si/c;;2*1-4(2)3/q+3;+1;2*-2

SMILES isoméricas

[O-][Si](=O)[O-].[O-][Si](=O)[O-].[Na+].[Al+3]

Reaxy-Rn

13277510

Reaxys-RN_link_address

https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=13277510&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Inorganic compounds
  • Superclass Mixed metal/non-metal compounds
    • Classe Post-transition metal oxoanionic compounds
      • Subclass Post-transition metal silicates

• Kingdom: Inorganic compounds
• Superclass: Mixed metal/non-metal compounds
• Classe: Post-transition metal oxoanionic compounds
• Subclass: Post-transition metal silicates
• Intermediate Tree Nodes: Not available
• Direct Parent: Post-transition metal silicates
• Alternative Parents: Miscellaneous silicates Post-transition metal salts Metalloid salts Inorganic sodium salts Inorganic oxides
• Molecular Framework: Not available
• Substituents: Post-transition metal silicate - Silicate - Inorganic sodium salt - Inorganic post-transition metal salt - Inorganic oxide - Inorganic salt - Inorganic metalloid salt
• Descrição: This compound belongs to the class of inorganic compounds known as post-transition metal silicates. These are inorganic compounds in which the largest oxoanion is silicate, and in which the heaviest atom not in an oxoanion is a post-transition metal.
• External Descriptors: Not available

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Propriedades químicas e físicas

• Solubilidade: Insoluble in cold water, hot water, methanol, diethyl ether, n-octanol and acetone.
• Sensibilidade: Hygroscopic
• Peso molecular: 202.140 g/mol
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 6
• Rotatable Bond Count: 0
• Exact Mass: 201.895 Da
• Monoisotopic Mass: 201.895 Da
• Topological Polar Surface Area: 126.000 Ų
• Heavy Atom Count: 10
• Formal Charge: 0
• Complexity: 18.800
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 4

XLogP3

Perguntas frequentes

How should this product be stored?

Store at room temperature, desiccated, under argon. It is supplied under an argon blanket; reseal under inert gas after each use.

How is this product shipped?

This product ships under standard ambient conditions. No temperature-controlled packaging is required.

What are the CAS number, molecular formula and molecular weight?

The CAS Number is 308080-99-1, the molecular formula is KnNa12-n[(AlO2)12(SiO2)12] · xH2O. InChIKey URGAHOPLAPQHLN-UHFFFAOYSA-N.

What documentation is provided?

Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.