Description
MES is a biological buffer reagent supplied at min. 99 % purity for biochemistry applications. It is identified by CAS number 4432-31-9 and EG number 224-632-3, with empirical formula C₆H₁₃NO₄S and a molar mass of 195,20 g/mol. This morpholinoethanesulfonic acid solid is used when laboratories need a defined Good’s-type buffer component for pH control in biochemical preparations and related experimental systems. offers a convenient amount for preparing working buffers, calibration solutions, and small- to medium-scale assays. Material from manufacturer Carl ROTH is presented with clear compositional data so that molar calculations and documentation remain straightforward. Intended for biochemistry and biological buffer reagent use, this MES grade supports consistent formulation practice at the bench. The combination of high stated purity, established CAS identity, and a practical pack size makes it a reliable choice for research and routine laboratory buffer work.
This article is part of Biological buffers (Tris, HEPES, MOPS), in Buffers & pH solutions.
Key features
- Assay: ≥99 %
- pH value: 2,5-4,0
- Chloride (Cl): ≤0,1 %
- Sulphate (SO4): ≤0,05 %
- Loss on drying: ≤1,0 %
- Heavy metals (as Pb): ≤0,001 %
- UV (0,1 M in H2O) A280 nm: ≤0,02
- CAS number: 4432-31-9
- Pack sizes: 50 g, 100 g, 250 g, 500 g, 1 kg
- EG nr.: 224-632-3
- Purity: min. 99 %
- Molar mass: 195,20 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about MES, min. 99 %, for biochemistry, 50 g, plastic
What is this article?
MES, min. 99 %, for biochemistry, 50 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Biological buffers (Tris, HEPES, MOPS), inside Buffers & pH solutions, in Lab chemicals.
Tris, HEPES, MOPS and their relatives hold pH in a range that cells and proteins tolerate, with a pKa near the working pH. The useful range is roughly one unit either side of the pKa. A phosphate buffer and Tris are not interchangeable in a method that names one of them, because the ion itself has effects.
A buffer resists a change in pH when a little acid or base is added. It does that because a weak acid and its conjugate base are both present. A pH buffer used to calibrate a meter has a stated value at a stated temperature. A biological buffer such as Tris or HEPES is chosen because it holds the pH of a living system and does not poison it. Conductivity standards are the sister articles for a conductivity meter. The ions are on PubChem. Electrode calibration practice sits with EURAMET and BELAC.
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The category is Buffers & pH solutions. The sub-category is Biological buffers (Tris, HEPES, MOPS). The catalogue is Lab chemicals.
Shelves beside this one are pH buffers & conductivity standards and Buffers (other).
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