381276

Silica Inorganic Sorbent

120-140 mesh, 99.8%

• Synonyme(s) : Silica, fumed, Silica, Silicic anhydride, Silicon dioxide, Silicon dioxide amorphous
• Formule linéaire : SiO₂
• CAS Number: 112945-52-5
• Poids moléculaire : 60.08
• Numéro MDL: MFCD00011232
• Code UNSPSC : 23201100
• ID de substance PubChem : 24863799
• Nomenclature NACRES : SB.52

Propriétés

• Product Name: Silica, 99.8%
• Qualité: standard
• Niveau de qualité: 100
• Essai: 99.8%
• Forme: powder
• Technique(s): LPLC: suitable
• Superficie: 175-225 m²/g
• Matrice: Silica
• Groupe de la matrice active: silica
• Taille des particules: 0.011 μm
• Dimension de pores: 60 Å mean pore size
• Technique de séparation: hydrophilic interaction (HILIC)
• Chaîne SMILES: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• Clé InChI: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Description

Description générale

Silica is a naturally occurring material in minerals, flint and in some plants in crystalline phase. Silica commonly used in industries is in synthetic form. Surface area, pore volume, pore size and particle size are independently controllable to some extent. The crystalline silica may be classified based on atmospheric pressure as:
a. Quartz: = 1143K
b. Tridymite: 1143 - 1743K
c. Cristobalite: = 1743, over 1973K it forms amorphous vitreous silica glass.

Application

Silica was used in synthesis of silicalite. Silica was used to assist the catalytic growth of oxide and nitride nanowires.

Caractéristiques et avantages

Has interesting thickening and thixotropic properties, and an enormous external surface area.

Autres remarques

Particle sizes are for primary particles, which form branched, chain-like aggregates a few tenths of a micron long.

May contain adsorbed H₂O and CO₂ which is removable by calcining at >900°C

Informations sur la sécurité

• Code de la classe de stockage: 13 - Non Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 2
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Gloves, type N95 (US)