69912-79-4

Basic information

• Product Name: MOLECULAR SIEVE
• Synonyms: MOLECULAR SIEVES, 5A, 1.6MM PELLETS;MOLECULAR SIEVE UOP TYPE 5A 1/8''-RODS;MOLECULAR SIEVES 5A POWDER UNDRIED;MOLECULAR SIEVE UOP TYPE 5A, POWDER;MOLECULAR SIEVE UOP TYPE 5A 1/16''-RODS;Molecular sieves, 5ÅMOLECULAR SIEVE 0.5 NM PEARL-SHAPEDGRA&;MOLECULAR SIEVES, 5A, 3.2MM PELLETS
• CAS NO: 69912-79-4
• Molecular Formula: CanNa12-2n[(AlO2)12(SiO2)12]xH2O
• Molecular Weight: 205.16300
• EINECS: 215-684-8
• Mol File: 69912-79-4.mol
• Article Data: 0

Chemical Properties

• Appearance: White to off-white/powder
• Water Solubility: Insoluble in water.
• Sensitive: Hygroscopic
• CAS DataBase Reference: MOLECULAR SIEVE(CAS DataBase Reference)
• NIST Chemistry Reference: MOLECULAR SIEVE(69912-79-4)
• EPA Substance Registry System: MOLECULAR SIEVE(69912-79-4)

Safety Data

• Hazard Codes: Xn,Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• WGK Germany: 3
• RTECS: ZG6800000
• F: 3-9
• Hazardous Substances Data: 69912-79-4(Hazardous Substances Data)

Usage

Uses

Different sources of media describe the Uses of 69912-79-4 differently. You can refer to the following data:
1. Molecular sieves, 5? is an anticaking and conditioning agent used to improve flow properties and prevent caking. It absorbs moisture up to 75% of its weight. It functions as a moisture absorbent, moisture barrier, carrier, and processing aid. It is used in salt, cake mixes, powdered sugar, nondairy creamers, and dry mixes. Usage level ranges from 1 to 2%. It is also termed sodium aluminosilicate.
2. Molecular sieves, 5A, 3-4mm (0.12-0.16in) dia. Pellets is used as an sorbent.

General Description

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 5A form has divalent calcium ions in place of sodium cations give apertures of ~5?, which exclude molecules of effective diameter >5? (for example: all 4-carbon rings and iso-compounds). These molecular sieves can adsorb compounds such as n-butane, n-butyl alcohol, propane, docosane and dichlorodifluoro-methane.