288500

硅胶

high-purity grade, pore size 60 Å, 2-22 μm particle size distribution, without binder, suitable for thin layer chromatography (TLC)

• CAS號碼: 112926-00-8
• EC號碼: 231-545-4
• MDL號碼: MFCD00011232
• 分類程式碼代碼: 41115711
• PubChem物質ID: 24857346
• NACRES: NC.07

屬性

• 等級: high-purity grade
• 品質等級: 100
• 形狀: powder
• 製造商／商標名: Sigma-Aldrich
• 技術: thin layer chromatography (TLC): suitable
• 表面積: ~500 m²/g
• 雜質: ≤0.01% Fe³⁺
• 粒度分佈: 2-22 μm
• 孔徑: 60 Å pore size
• pH值: ~6.8 (10% in aq. suspension)
• bp: 2230 °C
• mp: >1600 °C
• 負離子痕跡: chloride (Cl^-): ≤0.01%
• SMILES 字串: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• InChI 密鑰: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

描述

一般說明

Silica gel is a rigid 3D network of colloidal silica. It is exclusively used as a support material for the active titanium(III) centers in Ziegler-Natta catalysts. It allows a controlled fragmentation resulting in the formation of uniform polymer particles with narrow particle size distribution and high bulk density. 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

應用

Silica gel was used on glass plates to perform preparative thin layer chromatography.

安全資訊

• 儲存類別代碼: 11 - Combustible Solids
• 水污染物質分類（WGK）: nwg
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable