22138

Celite^® 535

filter aid, flux calcined

• Synonym(s): Diatomaceous earth, flux-calcined
• CAS Number: 68855-54-9
• MDL number: MFCD00132803
• UNSPSC Code: 11101527
• PubChem Substance ID: 329752264
• NACRES: SB.54

Properties

• Quality Level: 200
• form: powder or granules
• quality: flux calcined; treated with sodium carbonate
• composition: Al₂O₃, 4.0% ; CaO, 0.5% ; Fe₂O₃, 1.3% ; Na₂O + K₂O, 3.3% ; SiO₂, 89.6%
• loss: ≤0.2% loss on ignition, 900 °C
• particle size: ≤94.3 μm (81% (acc. to Cilas))
• pH: >8.5 (25 °C, 10% in aq. suspension)
• SMILES string: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• InChI key: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Description

General description

Diatomaceous earth is made up of natural amorphous silica formed from the fossilized skeletons of diatoms. It is extracted, crushed, dried and calcined with flux material. DE is widely used as filler in construction materials, paints and as an anti-caking agent for agricultural chemicals. It has high water and oil absorption ability.

Application

Diatomaceous earth may be used as an adsorbent for column chromatography.

Caution

Not Intended for cGMP Parenteral Pharmaceutical Manufacturing

Legal Information

Celite is a registered trademark of Imerys Minerals California, Inc.

Safety Information

• Pictograms: GHS08
• Signal Word: Danger
• Hazard Statements: H372
• Precautionary Statements: P260 - P264 - P270 - P314 - P501
• Hazard Classifications: STOT RE 1 Inhalation
• Target Organs: Lungs
• Storage Class Code: 6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable