13112

Magnesium

powder, ≥99%

• Synonym(e): Magnesium element
• Empirische Formel (Hill-System): Mg
• CAS-Nummer: 7439-95-4
• Molekulargewicht: 24.31
• Beilstein: 4948473
• EG-Nummer: 231-104-6
• MDL-Nummer: MFCD00085308
• UNSPSC-Code: 12141502
• eCl@ss: 38110201
• PubChem Substanz-ID: 57647054
• NACRES: NA.22

Eigenschaften

• Dampfdruck: 1 mmHg ( 621 °C)
• Assay: ≥99%
• Form: powder
• Selbstzündungstemp.: 950 °F
• Eignung der Reaktion: reagent type: reductant
• Widerstandsfähigkeit: 4.46 μΩ-cm, 20°C
• Verunreinigungen: ≤0.05% insoluble in HCl
• bp: 1090 °C (lit.)
• mp (Schmelzpunkt): 648 °C (lit.)
• Dichte: 1.74 g/mL at 25 °C (lit.)
• Kationenspuren: Fe: ≤500 mg/kg
• SMILES String: [Mg]
• InChI: 1S/Mg
• InChIKey: FYYHWMGAXLPEAU-UHFFFAOYSA-N

Beschreibung

Anwendung

Magnesium (powder) can be used as a reducing agent to synthesize:

• Titanium alloy hydride powder by the reduction of upgraded titania slag (UGS) under hydrogen atmosphere.      
• Ultrafine metallic iron (bcc-Fe) powders from hematite (α-Fe₂O₃) by ball-milling process.

It can also be used as a reducing agent in ruthenium(III) complex catalyzed atom-transfer radical addition (ATRA) and cyclization (ATRC) reactions. Magnesium does not generate free radicals but it generates and regenerates the catalytically active ruthenium(II) species.

Hinweis zur Analyse

Aussehen: silber-grau

Sicherheitshinweise

• Piktogramme: GHS02
• Signalwort: Danger
• H-Sätze: H228,H251,H261
• P-Sätze: P210 - P223 - P231 + P232 - P235 - P240 - P403 + P235
• Gefahreneinstufungen: Flam. Sol. 1 - Self-heat. 1 - Water-react 2
• Lagerklassenschlüssel: 4.2 - Pyrophoric and self-heating hazardous materials
• WGK: nwg
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges