Description
Methanol, anhydrous is a Reag. Ph. Eur. chemical reagent for Chapter 4.1.1 (1053400), with CAS number 67-56-1 and the empirical formula CH₃OH. Key scientific data include a molar mass of 32,04 g/mol, a density of 0,79 g/cm³, a flash point of 9,7 °C and a boiling point of 65 °C. The pack size is 1 l in glass, a 1 liter unit from manufacturer Carl ROTH. This anhydrous methanol is identified as Reag. Ph. Eur., Chapter 4.1.1, 1053400, which places it among the reagents defined by the European Pharmacopoeia for Chapter 4.1.1. Density 0,79 g/cm³ and molar mass 32,04 g/mol describe the CH₃OH molecule, while the boiling point of 65 °C and the flash point of 9,7 °C characterise its volatility. Substance codes CAS number 67-56-1, EG nr. 200-659-6 and UN number 1230 are given for the same methanol grade. Laboratories can therefore specify anhydrous methanol, Reag. Ph. Eur., Chapter 4.1.1, 1053400, in a 1 l glass bottle using the CAS number, empirical formula CH₃OH and the listed physical constants.
This article is part of Analytical grade solvents (p.a.), in Solvents.
Key features
- CAS number: 67-56-1
- Pack size: 1 l glass
- EG nr.: 200-659-6
- Empirical formula: CH₃OH
- Molar mass: 32,04 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
DangerHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about Methanol, anhydrous, Reag. Ph. Eur.
What is this article?
Methanol, anhydrous, Reag. Ph. Eur. is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Analytical grade solvents (p.a.), inside Solvents, in Lab chemicals.
An analytical-grade solvent, often marked p.a., has impurity limits tight enough for classical analysis and for preparing reagents. It is not automatically low enough in UV absorbance for HPLC, and it is not dry enough for a water-sensitive reaction. The grade is the purchase.
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.
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