Diethyl ether is a high-purity anhydrous laboratory solvent supplied as ROTIDRY®Sept grade with a minimum assay of 99,5 % and a maximum water content of 50 ppm H₂O. Identified by CAS number 60-29-7 and empirical formula C₄H₁₀O, it has a molar mass of 74,12 g/mol and a density of 0,71 g/cm³. The boiling point lies between 34,58 and 34,59 °C, while the flash point is −40 °C. This grade is stabilised with BHT to support handling stability. Packaged in a 250 ml septum bottle, the solvent is convenient for moisture-sensitive work, extractions, and organic synthesis where low residual water is required. Physical data and composition align with the specification from manufacturer Carl ROTH. Diethyl ether remains a versatile ether solvent for research and analytical laboratories that need a dry, well-characterised grade in a septum-sealed format for controlled withdrawal. This article is part of Dry & deuterated solvents (NMR, synthesis), in Solvents. Key features Assay (GC): ≥99,5 % Colour (APHA): ≤10 Water (KF): ≤0,005 % Acidity (as CH3COOH): ≤0,001 % Evaporation residue: ≤0,001 % CAS number: 60-29-7 Pack size: 250 ml septum bottle EG nr.: 200-467-2 Purity: min. 99,5 % (max. 50 ppm H₂O) Molar mass: 74,12 g/mol Density: 0,71 g/cm³ Technical Information Sheet: Safety Data Sheet:
