1.02952

Dimethyl sulfoxide

for analysis EMSURE^® ACS

• Synonym(s): Methanesulfinylmethane, Methyl sulfoxide, Dimethyl(oxido)sulfur, DMSO, DMSO
• Linear Formula: (CH₃)₂SO
• CAS Number: 67-68-5
• Molecular Weight: 78.13
• Beilstein/REAXYS Number: 506008
• MDL number: MFCD00002089
• UNSPSC Code: 12191502
• EC Index Number: 200-664-3
• NACRES: NA.05

Properties

• grade: ACS reagent
• Quality Level: 300
• vapor density: 2.7 (vs air)
• vapor pressure: 0.42 mmHg ( 20 °C)
• product line: EMSURE^®
• assay: ≥99.9% (GC)
• form: liquid
• autoignition temp.: 573 °F
• potency: 28300 mg/kg LD₅₀, oral (Rat); 40000 mg/kg LD₅₀, skin (Rat)
• expl. lim.: 42 %, 63 °F
• impurities: ≤0.0002 meq/g Titrable acid
• evapn. residue: ≤0.001%
• color: clearAPHA: ≤10
• refractive index: n20/D 1.479 (lit.)
• kinematic viscosity: 2.14 cSt
• bp: 189 °C (lit.)
• mp: 16-19 °C (lit.)
• transition temp: flash point 87 °C
• solubility: 1000 g/L
• density: 1.10 g/mL (lit.)
• cation traces: Fe: ≤0.0001%
• storage temp.: 2-30°C
• SMILES string: CS(C)=O
• InChI: 1S/C2H6OS/c1-4(2)3/h1-2H3
• InChI key: IAZDPXIOMUYVGZ-UHFFFAOYSA-N

Description

General description

EMSURE grade solvents are suitable for a broad spectrum of classical lab applications, and are frequently used in regulated and highly demanding lab applications. EMSURE provides worldwide best and most extensive product specifications. We declare our EMSURE range to be in compliance with the ACS, with the reagent part of the European Pharmacopoeia (Reag. Ph Eur) and also with the ISO standards.

Application

Dimethyl sulfoxide is used as a solvent:

• To dissolve the substrate and to dilute fluorogenic substrate.
• To permeabilize V. natriegens or E coli cell.

Caution

Supercools easily and remelts slowly at room temperature. Solidified product can be re-liquified by warming to room temperature without detriment to the product.

Specifications

Saturation Concentration in Air: 8.0 g/m3 (20 °C)

Analysis Note

Purity (GC): ≥ 99.9 %
Identity (IR): conforms
Appearance: clear
Color: ≤ 10 Hazen
Titrable acid: ≤ 0.0002 meq/g
Density (d 20 °C/20 °C): 1.101 - 1.103
Refractive index (n 20/D): 1.478 - 1.479
Melting point: ≥ 18.0 °C
Boiling point: 188 - 190 °C
Absorption: conforms
Heavy metals (as Pb): ≤ 0.0001 %
Fe (Iron): ≤ 0.0001 %
Related substances (GC): conforms
Readily carbonizable substances: conforms
Evaporation residue: ≤ 0.001 %
Water: ≤ 0.1 %

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class: 10 - Combustible liquids
• wgk_germany: WGK 1
• flash_point_f: 188.6 °F - closed cup
• flash_point_c: 87 °C - closed cup