ChemicalBook > CAS DataBase List > Molecular sieve 3A

Molecular sieve 3A

Product Name
Molecular sieve 3A
CAS No.
308080-99-1
Chemical Name
Molecular sieve 3A
Synonyms
MOLECULAR SIEVE;MOLECULAR SIEVE;MOLECULAR SIEVE;MOLECULAR SIEVE;MOLECULAR SIEVE;MOLECULAR SIEVE;MOLECULAR SIEVE;MOLECULAR SIEVE;MOLECULAR SIEVE;MOLECULAR SIEVE
CBNumber
CB0330192
Molecular Formula
KnNa12-n[(AlO2)12(SiO2)12]xH2O
Formula Weight
0
MOL File
Mol file
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Molecular sieve 3A Property

form 
Powder or Crystals
color 
Yellow to yellow-green
Water Solubility 
Insoluble in water.
Sensitive 
Hygroscopic
CAS DataBase Reference
308080-99-1
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Safety

Hazard Codes 
Xi,Xn
Risk Statements 
36/37/38-20
Safety Statements 
26-36
WGK Germany 
3
TSCA 
Yes
HS Code 
28421000
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
334286
Product name
Molecular sieves, 3 Å
Purity
pellets, 1.6?mm
Packaging
1kg
Price
$165
Updated
2024/03/01
Sigma-Aldrich
Product number
208574
Product name
Molecular sieves, 3
Purity
beads, 4-8 mesh
Packaging
1kg
Price
$148
Updated
2024/03/01
Sigma-Aldrich
Product number
208574
Product name
Molecular sieves, 3
Purity
beads, 4-8 mesh
Packaging
5kg
Price
$620
Updated
2024/03/01
Sigma-Aldrich
Product number
334278
Product name
Molecular sieves, 3 Å
Purity
pellets, 3.2?mm
Packaging
1KG
Price
$140
Updated
2022/05/15
Alfa Aesar
Product number
033530
Product name
Molecular sieves, 3A, 3-4mm (0.12-0.16in) dia. pellets
Packaging
1kg
Price
$106
Updated
2024/03/01
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Molecular sieve 3A Chemical Properties,Usage,Production

Chemical Properties

white powder

Uses

Molecular sieves, 3A is used as desiccant in petroleum and chemical industries. It is useful for the drying of unsaturated hydrocarbons such as ethylene, propylene and butadiene. It is also used in the removal of water from ethanol. It finds application in the drying of certain chemicals namely ethanol, refrigerants and natural gas. It plays an important role as selective adsorption of water in insulated glass (IG) and polyurethane. It has been considered as a general-purpose drying agent in polar and non polar media.

Uses

Molecular sieve 3A may be used in the following processes:

  • As a general-purpose drying agent in polar and nonpolar media.
  • Commercial dehydration of unsaturated hydrocarbon streams, including cracked gas, propylene, butadiene, acetylene
  • Drying polar liquids such as methanol and ethanol.
  • Adsorption of molecules such as NH3 and H2O from a N2/H2 flow.

Definition

Porous crystallinesubstances, especially aluminosilicates(see zeolite), that can be dehydratedwith little change in crystalstructure. As they form regularlyspaced cavities, they provide a highsurface area for the adsorption ofsmaller molecules.
The general formula of these substancesis MnO.Al2O3.xSiO2.yH2O,where M is a metal ion and n is twicethe reciprocal of its valency. Molecularsieves are used as drying agentsand in the separation and purificationof fluids. They can also be loadedwith chemical substances, which remainseparated from any reactionthat is taking place around them,until they are released by heating orby displacement with a morestrongly adsorbed substance. Theycan thus be used as cation exchangemediums and as catalysts and catalystsupports. They are also used asthe stationary phase in certain typesof chromatography (molecular-sievechromatography).

Application

Molecular sieve 3A is mainly used for drying of unsaturated hydrocarbons such as petroleum cracked gas, ethylene, butadiene; drying of polar liquids such as methanol and ethanol, drying of refrigerants; deep drying of kerosene and aero-engines; drying of nitrogen-hydrogen mixed gas . Desiccant for petrochemical, vacuum glass and other industries.

General Description

Molecular sieves are crystalline metal aluminosilicates having a 3-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 ~3?, excluding diameter >3?, e.g., ethane. The 4 to 8-mesh type is normally used in gas-phase applications. Molecular sieves are considered a universal drying agent in polar and nonpolar media.

Structure and conformation

The general formula of the chemical composition of molecular sieve is: (Mn+)2/nO·Al2O3·xSiO2·pH2O, M represents metal ion (usually Na in artificial synthesis), n represents the valence of metal ion, and x represents the number of moles of SiO2, also known as is the ratio of silicon to aluminum, and p represents the number of moles of water. The most basic structure of the molecular sieve framework is SiO4 and AlO4 tetrahedron, which form a crystal of a three-dimensional network structure through the combination of shared oxygen atoms. This combination forms the holes and channels with molecular level and uniform pore size. Due to different structures and forms, the "cage"-shaped spatial pores are divided into "cage" structures such as α, β, γ, hexagonal columns, and faujasite.

Molecular sieve 3A Preparation Products And Raw materials

Raw materials

Preparation Products

Acetonitrile
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Molecular sieve 3A Suppliers

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View Lastest Price from Molecular sieve 3A manufacturers

Hebei Weibang Biotechnology Co., Ltd
Product
Molecular sieve 3A 308080-99-1
Price
US $25.00/ASSAYS
Min. Order
100ASSAYS
Purity
99.5%
Supply Ability
100 mt
Release date
2024-11-15
Hebei Mojin Biotechnology Co., Ltd
Product
Molecular sieve 3A 308080-99-1
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
50000KG/month
Release date
2023-06-21
Career Henan Chemical Co
Product
MOLECULAR SIEVES 308080-99-1
Price
US $8.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
100MT
Release date
2018-12-15

308080-99-1, Molecular sieve 3ARelated Search:

MOLECULAR SIEVES PACK 4A 5A molecular sieve Tris(2,4-pentanedionato)chroMiuM(III) Ferric acetylacetonate Ethyl isocyanoacetate DICHLORO(ETHYLENEDIAMINE)PLATINUM(II) Benzyl isocyanide Tosylmethyl isocyanide 1,1,3,3-TETRAMETHYLBUTYL ISOCYANIDE 2,4-PENTANEDIONE, SILVER DERIVATIVE N-BUTYLISOCYANIDE Cupric acetylacetonate TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)DYSPROSIUM(III) TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)EUROPIUM(III) TERT-BUTYL ISOCYANIDE SALCOMINE METHYL ISOCYANOACETATE Zeolite

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