18514

Kieselguhr

calcined, purified

• 동의어(들): Infusorial earth
• CAS Number: 91053-39-3
• MDL number: MFCD00132803
• UNSPSC 코드: 12000000
• PubChem Substance ID: 57647665

속성

• 양식: powder
• 품질: calcined, purified
• 환경친화적 대안 제품 특성: Catalysis; Learn more about the Principles of Green Chemistry.
• 불순물: ≤1% HCl solubles
• 손실: ≤1% loss on ignition
• 음이온 미량물: chloride (Cl^-): ≤200 mg/kg; sulfate (SO₄^2-): ≤500 mg/kg
• 양이온 미량물: Fe: ≤500 mg/kg
• 환경친화적 대안 카테고리: Aligned
• SMILES string: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• InChI key: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

설명

일반 설명

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.

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for catalysis. Find details here.

애플리케이션

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.
• Preparation of KMnO₄-kieselguhr reagent for use in the oxidation of primary alcohols to aldehydes with shorter reaction time.

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

안전성 정보

• 픽토그램: GHS08
• 신호어: Danger
• 유해 및 위험 성명서: H372
• 예방조치 성명서: P260 - P264 - P270 - P314 - P501
• Hazard Classifications: STOT RE 1 Inhalation
• 표적 기관: Lungs
• Storage Class Code: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• WGK: nwg
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable
• 개인 보호 장비: dust mask type N95 (US), Eyeshields, Gloves