60736

Silica gel Inorganic Sorbent

high-purity grade, 35-70 mesh

• CAS Number: 112926-00-8
• EC Number: 231-545-4
• MDL number: MFCD00011232
• UNSPSC Code: 23201100
• PubChem Substance ID: 329759180
• NACRES: SB.52

Properties

• Product Name: Silica gel, high-purity grade, 40, 35-70 mesh
• grade: high-purity grade
• Quality Level: 100
• form: powder or crystals
• technique(s): LPLC: suitable
• surface area: 350 m²/g
• matrix: Silica
• matrix active group: silica
• particle size: 0.2-0.5 mm (35-70 mesh ASTM); 35-70 mesh
• pore size: 90 Å mean pore size
• bp: 2230 °C
• mp: >1600 °C
• suitability: suitable for column chromatography
• separation technique: hydrophilic interaction (HILIC)
• SMILES string: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• InChI key: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Description

General description

Silica gel is a rigid 3D network of colloidal silica.[1] It is exclusively used as a support material for the active titanium (III) centers in Ziegler-Natta catalysts. Silica gel allows a controlled fragmentation leading to form uniform polymer particles with narrow particle size distribution and high bulk density.[2] Silica gel is classified as below:
a. Aquagel - pores are filled with water
b. Xerogel - by the process of evaporation, aqueous phase in the pores are removed
c. Aerogel - solvent removed by supercritical extraction[1]

Application

It has been used for the solid phase extraction (SPE) fractionation of organohalogen compounds in biological organ tissues.[3] Silica gel column may be employed for the clean-up procedures in multiresidue methods of pesticide analyses[4] and as a support for the fabrication of pentachlorophenol (PCP)-imprinted functionalized sorbents for the analysis of trace pentachlorophenol in water samples by SPE combined with high performance liquid chromatography (HPLC).[5]

Silica gel may be used in separation of single-walled carbon nanotube (SWNT) by simple filtration.[6]

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: nwg
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)