Description
Dimethylsulphoxide ROTISOLV® is a high-purity headspace-grade solvent offered at min. 99,99 % for chromatographic laboratory applications. It carries CAS number 67-68-5 and the empirical formula C₂H₆OS, with a molar mass of 78,13 g/mol and a density of 1,1 g/cm³. The boiling point is 189 °C and the flash point is 87 °C, giving well-defined thermal characteristics for handling and method design. Supplied in a 1 l glass pack, this ROTISOLV® solvent is positioned for gas-chromatographic and headspace work where solvent background must remain minimal. Identity and physical data from manufacturer Carl ROTH support confident integration into analytical protocols. The product suits residual-solvent analysis, sample preparation, and GC methods that rely on consistent purity and known physicochemical behaviour. Laboratories seeking a defined dimethyl sulphoxide grade for headspace chromatography can use this material within established quality and safety frameworks.
This article is part of HPLC & LC-MS grade solvents, in Solvents. See also Analytical grade solvents (p.a.).
Key features
- Assay (GC): ≥99.99 %
- Colour (APHA): ≤5
- Water (KF): ≤0.03 %
- Free acid (as CH3COOH): ≤0.002 %
- Free alkali (as NH3): ≤0.0005 %
- Refractive index (20 °C): 1.477-1.480
- Non volatile matter: ≤0.001 %
- Melting point: ≥18 °C
- UV-Cutoff: 190-265 nm
- 400 nm: ≥98 %
- CAS number: 67-68-5
- Pack size: 1 l glass
- EG nr.: 200-664-3
- Purity: min. 99,99 %
- Molar mass: 78,13 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Dimethylsulphoxide, ROTISOLV®, min. 99,99 %, Headspace Grade, 1 l, glass
What is this article?
Dimethylsulphoxide, ROTISOLV®, min. 99,99 %, Headspace Grade, 1 l, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in HPLC & LC-MS grade solvents, inside Solvents, in Lab chemicals.
HPLC grade limits the absorbance and the residue that would appear as peaks or baseline drift. LC-MS grade goes further on metal ions and on particles that would suppress a mass spectrum. A solvent that is only analytical grade is a false economy on an LC-MS system.
A solvent dissolves. The grade says which impurities are low enough for the method. Analytical grade is the ordinary pure solvent. HPLC and LC-MS grades limit the absorbance and the ions that would become peaks or background. A dry solvent has had water removed. A deuterated solvent is for NMR, where the hydrogen signal would otherwise drown the sample. Technical grade is for cleaning and for synthesis that does not need a chromatogram. Identity is on PubChem. Names follow IUPAC. Hazards follow ECHA, the CLP Regulation and REACH.
Which category should I open next?
The category is Solvents. The sub-category is HPLC & LC-MS grade solvents. The catalogue is Lab chemicals.
Shelves beside this one are Analytical grade solvents (p.a.), Dry & deuterated solvents (NMR, synthesis), Technical & synthesis grade solvents and Green & alternative solvents.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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