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1.06126

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2-Morpholinoethanesulfonic acid monohydrate

buffer substance MES

Synonym(s):
MES, 2-Morpholinoethanesulfonic acid monohydrate
CAS Number:
Molecular Weight:
213.25
MDL number:
EC Index Number:
224-632-3

Quality Level

form

powder

pH

3.6 (20 °C, 10 g/L in H2O)

mp

>300 °C

solubility

80 g/L

bulk density

570 kg/m3

storage temp.

2-30°C

InChI

1S/C6H13NO4S/c8-12(9,10)6-3-7-1-4-11-5-2-7/h1-6H2,(H,8,9,10)

InChI key

SXGZJKUKBWWHRA-UHFFFAOYSA-N

General description

buffer substance MES

Application

2-Morpholinoethanesulfonic acid monohydrate buffer substance MES. CAS 145224-94-8, pH 3.6 (10 g/l, H₂O, 20 °C).

Analysis Note

Assay (alcalimetric, calculated on anhydrous substance)≥ 99 %Identity (IR-spectrum)passes testUV-Absorption (250 nm, 50 g/l, 1 cm, water)≤ 0.05Chloride (Cl)≤ 0.005 %Sulphate (SO₄)≤ 0.005 %Heavy metals (as Pb)≤ 0.0005 %Na (Sodium)≤ 0.005 %Water (according to Karl Fischer)7.0 - 9.0 %Biological buffer, pKa at 20 °C6.15

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

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