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MES CAS 4432-31-9 Purity ≥99.50% (Titration) Biological Buffer

Shanghai Ruifu Chemical Co., Ltd. is the leading manufacturer and supplier of MES (CAS: 4432-31-9) with high quality, commercial production. Welcomed to order.
Chemical Name MES
Synonyms MES Free Acid; 2-Morpholinoethanesulfonic Acid; 2-(N-Morpholino)ethanesulfonic Acid; 2-(4-Morpholino)ethanesulphonic Acid; 4-Morpholineethanesulfonic Acid
CAS Number 4432-31-9
CAT Number RF-PI1643
Stock Status In Stock, Production Scale Up to Tons
Molecular Formula C6H13NO4S
Molecular Weight 195.23
Melting Point >300℃ (lit.)
Density 1.208
Solubility in Water Almost Transparency
Brand Ruifu Chemical
Item Specifications
Grade Ultra Pure Grade; Molecular Biology Grade
Appearance White Crystalline Powder
Purity / Analysis Method ≥99.50% (Neutralization Titration) (Anhydrous Basis)
Water (by Karl Fischer) ≤1.00%
Residue on Ignition ≤0.20%
Heavy Metals (as Pb) ≤5ppm
Solubility Clear Colorless Solution (0.1 M aqueous)
Al ≤5ppm
As ≤0.1ppm
Co ≤5ppm
Cr ≤5ppm
Cu ≤5ppm
Iron (Fe) ≤0.05ppm
K ≤50ppm
Li ≤5ppm
Mo ≤5ppm
Sr ≤5ppm
Zn ≤5ppm
Chloride (Cl) ≤0.05
Sulfate (SO4) ≤0.005
Useful pH Range 5.5~6.7
UV 260NM 0.1M aq. ≤0.04
UV 280NM 0.1M aq. ≤0.02
pH (0.5M in Water) 2.5-4.1
pKa (25℃) 5.9 – 6.3
DNase None Detected
Phosphatases None Detected
Proteases None Detected
RNases None Detected
Infrared Spectrometry Conforms to Structure
X-Ray Diffraction Conforms to Structure
Test Standard Enterprise Standard
Usage Biological Buffer
Package: Bottle, Aluminium foil bag, 25kg/Cardboard Drum, or according to customer's requirement. Storage Condition: Store in sealed containers at cool and dry place; Protect from light and moisture. MES (CAS: 4432-31-9) is one of the good′s buffers, and the most extensively application is biological buffers. MES is a zwitterionic N-substituted aminosulfonic acid with a morpholinic ring and it does not form complexes with the majority of the metals used in environmental and biological studies. MES is easily soluble in water and has minimum lipid solubility, making it impermeable to membranes. MES has been also used as a component of the elution buffer used to elute plasma from α2-macroglobulin affinity column. MES has been used as an activation buffer during antibody conjugation to microparticles and it has been used in the functionalization of microchannels during the creation of microfluidic-integrated surface plasmon resonance (SPR) platform for pathogen detection.