439223

Dichlormethan

suitable for HPLC, ≥99.9%, contains 40-150 ppm amylene as stabilizer

• Synonym(e): Methylenchlorid
• Empirische Formel (Hill-System): CH₂Cl₂
• CAS-Nummer: 75-09-2
• Molekulargewicht: 84.93
• Beilstein: 1730800
• EG-Nummer: 200-838-9
• MDL-Nummer: MFCD00000881
• UNSPSC-Code: 12190000
• PubChem Substanz-ID: 24867491
• NACRES: NA.21

Eigenschaften

• Dampfdichte: 2.9 (vs air)
• Qualitätsniveau: 100
• Dampfdruck: 24.45 psi ( 55 °C); 6.83 psi ( 20 °C)
• Assay: ≥99.9%
• Form: liquid
• Selbstzündungstemp.: 1223 °F
• Enthält: 40-150 ppm amylene as stabilizer
• Expl.-Gr.: 22 %
• Methode(n): HPLC: suitable
• Verunreinigungen: Free halogens, passes test; ≤0.0003 meq/g Titr. acid; ≤0.02% water
• Abdampfrückstand: <0.0003%
• Farbe: APHA: ≤10; clear
• Brechungsindex: n20/D 1.424 (lit.)
• bp: 39.8-40 °C (lit.)
• mp (Schmelzpunkt): −95 °C (lit.)
• Dichte: 1.325 g/mL at 25 °C (lit.)
• λ: H₂O reference
• UV-Absorption: λ: 235 nm A_max: 1.00; λ: 240 nm A_max: 0.20; λ: 250 nm A_max: 0.05; λ: 260 nm A_max: 0.02; λ: 340-400 nm A_max: 0.01
• Eignung: passes test for HPLC
• SMILES String: ClCCl
• InChI: 1S/CH2Cl2/c2-1-3/h1H2
• InChIKey: YMWUJEATGCHHMB-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

Dichloromethane (DCM) is a chlorinated organic solvent with a wide range of industrial applications. It has C_2v symmetry, low boiling point, high density and is immiscible in water. Degradation of DCM by various methods has been reported. Ultrasonic absorption studies of liquid DCM shows strong relaxation effect. A study reports the dielectric characteristics of DCM over a wide frequency range. DCM is susceptible to degradation with time, which can be suppressed by adding amylene as a stabilizer.

Anwendung

entspricht den ACS-Spezifikationen

Dichloromethane (Methylene chloride) may be used in the following processes:

• To compose ultrasonic baths for cleaning and protection of aluminum coating over atactic-PMMA (poly(methyl methacrylate)) for dielectric studies.
• Preparation of AMBF₃ (ammoniomethyltrifluoroborate)-conjugated biomolecules.
• Sample preparation for GC-MS (Gas Chromatography-Mass Spectrometry) analysis.
• Preparation of ammonium acetate solvent mixture in combination with isopropanol, acetonitrile and water for mass spectral analysis of neutral lipids.
• Quantification of glutathione (GSH) and glutathione disulfide (GSSG) in biological samples by HPLC and spectrophotometry.
• As an extractant for 2,2-dithioethyl-4-(2′-pyridyl)-4-butyro-γ-lactone.

Angaben zur Herstellung

filtriert durch einen 0.2 μm Filter

Sicherheitshinweise

• Piktogramme: GHS08,GHS07
• Signalwort: Warning
• H-Sätze: H315,H319,H336,H351
• P-Sätze: P202 - P261 - P264 - P302 + P352 - P305 + P351 + P338 - P308 + P313
• Gefahreneinstufungen: Carc. 2 - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Zielorgane: Central nervous system
• Lagerklassenschlüssel: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• WGK: WGK 2
• Flammpunkt (°F): does not flash
• Flammpunkt (°C): does not flash
• Persönliche Schutzausrüstung: Eyeshields, Faceshields, Gloves