1.06197
2-Morpholinoethanesulfonic acid sodium salt (MES Na)
buffer substance
Synonym(s):
2-Morpholinoethanesulfonic acid sodium salt (MES Na)
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About This Item
CAS Number:
Molecular Weight:
217.22
EC Index Number:
275-203-2
UNSPSC Code:
12161703
MDL number:
InChI
1S/C6H13NO4S.Na/c8-12(9,10)6-3-7-1-4-11-5-2-7;/h1-6H2,(H,8,9,10);/q;+1/p-1
InChI key
IRHWMYKYLWNHTL-UHFFFAOYSA-M
form
powder or crystals
pH
8.9-10.1 (20 °C, 10 g/L in H2O)
storage temp.
2-30°C
General description
buffer substance
Application
2-Morpholinoethanesulfonic acid sodium salt (MES Na) buffer substance. CAS 71119-23-8, pH 8.9 - 10.1 (10 g/l, H₂O, 20 °C).
Analysis Note
Assay (alkalimetric, calculated on dried substance)≥ 99.0 %Identity (IR-spectrum)passes testAppearancewhite to almost white, fine powder or colorless crystalsAppearance of solution (0.5 mol/l, water)clear and colorless.UV-Absorption (260 nm; 0.5 mol/l; 1 cm; water)≤ 0.05UV-Absorption (280 nm; 0.5 mol/l; 1 cm; water)≤ 0.05Chloride (Cl)≤ 50 ppmSulphate (SO₄)≤ 50 ppmHeavy metals (as Pb)≤ 5 ppmCa (Calcium)≤ 50 ppmCd (Cadmium)≤ 5 ppmCo (Cobalt)≤ 5 ppmCr (Chromium)≤ 5 ppmCu (Copper)≤ 5 ppmFe (Iron)≤ 10 ppmK (Potassium)≤ 50 ppmMg (Magnesium)≤ 10 ppmMn (Manganese)≤ 5 ppmNi (Nickel)≤ 5 ppmPb (Lead)≤ 5 ppmZn (Zinc)≤ 5 ppmDNases (Exo- and endonucleases)non detectableRNasesnon detectableProteasesnon detectableNicking activity≤ 10 %Loss on Drying (105°C)≤ 1.0 %Biological buffer, pKa at 20 °C6.1
Storage Class
13 - Non Combustible Solids
wgk
WGK 1
flash_point_c
Not applicable
Certificates of Analysis (COA)
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