1.06197

Millipore

2-Morpholinoethanesulfonic acid sodium salt (MES Na)

buffer substance

Synonym(s):
2-Morpholinoethanesulfonic acid sodium salt (MES Na)
CAS Number:
Molecular Weight:
217.22
MDL number:
EC Index Number:
275-203-2

storage conditions

Store at +5°C to +30°C.

Quality Level

pH

8.9-10.1 (20 °C, 10 g/L in H2O)

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

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
Certificate of Analysis
Certificate of Origin

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