1.05741

Molecular sieve 0.3 nm

rods ~ 1.6 mm (1/16")

• Synonyme(s) : Molecular sieve 0.3 nm, Sodium aluminium silicate
• Numéro CAS: 1318-02-1
• Code UNSPSC : 41123003
• Numéro de classement CE : 215-283-8
• Nomenclature NACRES : NB.21

Propriétés

• Niveau de qualité: 200
• Forme: rod
• Superficie: 800 m²/g
• Perte: ≤10% loss on ignition, 950°C
• Taille des particules: ~1.6 mm
• Dimension de pores: 0.3 nm
• pH: 8-11 ( in H₂O)
• Pf: >1600 °C
• Masse volumique apparente: 700‑750 kg/m³
• Température de stockage: no temp limit

Description

Description générale

Molecular sieves are crystalline, synthetic zeolites. Their crystal gratings are similar to a cage with numerous hollow spaces. The cavities are accessible from all sides by pores of exactly defined dimensions.

Application

Molecular sieves can be used:      

• in desiccators and drying tubes      
• for keeping absolute solvents dry      
• for drying gases or solvents in drying columns    
• for selective adsorption

Caractéristiques et avantages

• Easy to use: practically chemically inert, non-toxic, no disposal problems, dried liquids can be decanted      
• High adsorption capacity even with a low water content of the substance to be dried     
• High adsorption capacity even at high temperatures      
• High adsorption affinity for polar and unsaturated organic molecules (however, H₂O is always preferentially adsorbed)     
• Selective adsorption: only molecules that can pass through the pores are adsorbed

Remarque sur l'analyse

Identity: conforms
Loss on ignition (950 °C): ≤ 10 %
Water absorption capacity (24 hrs.,80 % relative humidity): ≥ 15 %

Informations sur la sécurité

• Code de la classe de stockage: 13 - Non Combustible Solids
• Classe de danger pour l'eau (WGK): nwg
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable