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Kieselguhr Green Alternative

calcined, purified

Synonym: Infusorial earth

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Properties

InChI Key   VYPSYNLAJGMNEJ-UHFFFAOYSA-N
quality   calcined, purified
greener alternative product characteristics   Catalysis
Learn more about the Principles of Green Chemistry.
loss   ≤1% loss on ignition
anion traces   chloride (Cl-): ≤200 mg/kg
  sulfate (SO42-): ≤500 mg/kg
cation traces   Fe: ≤500 mg/kg

Description

Application

Kieselguhr (infusorial earth) may be used in the following processes:
• Estimation of total fats.
• As a catalyst in the synthesis of ketones and aldehydes via oxidation of corresponding oximes with manganese dioxide.
• Green synthesis of β-nitroalkenes via Michael addition of 1,3-dicarbonyl compounds, by a grinding method in the absence of solvent and catalyst.

Used for greener amide bond formation from amines and carboxylic acids after thermal activation at high temperature.

Clean, reusable and low cost heterogeneous catalyst for amide synthesis

General description

Kieselguhr (diatomite, infusorial earth) is the fossilized skeletons of diatom algae. It is mainly made up of silica with many unique features like high porosity, small particle size, low density and thermal conductivity. It is primarily utilized as a source to manufacture filter aids, fire-bricks and adsorbents. Kieselguhr is the main component of the Berkefeld filter used for purifying water. It is also utilized in the filtration process of beer brewing.

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Safety & Documentation

Safety Information

Symbol 
GHS08  GHS08
Signal word 
Warning
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
nwg
Protocols & Articles
Peer-Reviewed Papers
15

References

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