Sigma Aldrich 22141-25G-F Diatomaceous Earth Filter Aid, Acid Wash, Flux-Calcined, 25g Bottle

Item is discontinued. The manufacturer’s recommended alternate is item# SIG-22141-100G-F. Please find the alternate product link below in the related items section.

Item Number:SIG-22141-25G-F
Manufacturer Part No:22141-25G-F
Manufacturer:Sigma-Aldrich
Units:25g Bottle

Details

  • Filter aid, Acid washed, treated with sodium carbonate, flux calcined
  • CAS Number 68855-54-9
  • 25g Bottle

Quality Level



 

form

powder

quality

acid washed
flux calcined
treated with sodium carbonate
 

composition

Al2O3, 4.0%
CaO, 0.5%
Fe2O3, 1.3%
Na2O + K2O, 3.3%
SiO2, 89.5%
 

loss

~0.3% loss on ignition, 900 °C

particle size

≤113 μm (82% (acc. to Cilas))

pH

<7 (25 °C, 10% in aq. suspension)

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Quality Level



 

form

powder

quality

acid washed
flux calcined
treated with sodium carbonate
 

composition

Al2O3, 4.0%
CaO, 0.5%
Fe2O3, 1.3%
Na2O + K2O, 3.3%
SiO2, 89.5%
 

loss

~0.3% loss on ignition, 900 °C

particle size

≤113 μm (82% (acc. to Cilas))

pH

<7 (25 °C, 10% in aq. suspension)