Description
Methanol is a high-purity anhydrous alcohol solvent offered as ROTIDRY®Sept grade with a minimum assay of 99,9 % and a water specification of min. 50 ppm H₂O. It is identified by CAS number 67-56-1 and empirical formula CH₃OH, with a molar mass of 32,04 g/mol and a density of 0,79 g/cm³. The boiling point is 65 °C and the flash point is 9,7 °C. Packaged in a 250 ml septum bottle, this dry methanol grade is practical for moisture-sensitive reactions, extractions, HPLC sample preparation, and general laboratory use where low residual water and septum withdrawal are preferred. Composition and physical constants follow the data stated by manufacturer Carl ROTH. Methanol remains a fundamental polar protic solvent for synthesis, analytics, and routine laboratory applications that call for a well-specified ROTIDRY®Sept quality in a convenient sealed format.
This article is part of Dry & deuterated solvents (NMR, synthesis), in Solvents.
Key features
- Assay (GC): ≥99,9 %
- Colour (APHA): ≤10
- Water (KF): ≤0,005 %
- Acidity (as CH3COOH): ≤0,002 %
- Evaporation residue: ≤0,0005 %
- CAS number: 67-56-1
- Pack size: 250 ml septum bottle
- EG nr.: 200-659-6
- Purity: min. 99,9 % (min. 50 ppm H₂O)
- Molar mass: 32,04 g/mol
- Density: 0,79 g/cm³
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
DangerHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about Methanol, ROTIDRY®Sept min. 99,9% (min. 50ppm H2O), 250 ml, septum bottle
What is this article?
Methanol, ROTIDRY®Sept min. 99,9% (min. 50ppm H2O), 250 ml, septum bottle is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Dry & deuterated solvents (NMR, synthesis), inside Solvents, in Lab chemicals.
A dry solvent has had water removed to a stated level, for a reaction that water would stop. A deuterated solvent replaces hydrogen with deuterium so an NMR spectrum is not drowned by the solvent signal. The isotopic enrichment and the water content are the two specifications. Caps and septa matter, because either product picks up moisture from the air.
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 Dry & deuterated solvents (NMR, synthesis). The catalogue is Lab chemicals.
Shelves beside this one are Analytical grade solvents (p.a.), HPLC & LC-MS grade solvents, Technical & synthesis grade solvents and Green & alternative solvents.
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