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475893

Millipore

MES, Free Acid, ULTROL® Grade

A zwitterionic buffer useful in the pH range of 5.5-6.5. Has a pKa of 6.10 at 25°C. Absorbance (1.0 M, H2O, 260 nm):0.05.

Synonym(s):
2-(N-Morpholino)ethanesulfonic Acid
Empirical Formula (Hill Notation):
C6H13NO4S
CAS Number:
Molecular Weight:
195.24
MDL number:

Quality Level

Assay

≥99% dry basis (titration)

form

crystalline solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
desiccated (hygroscopic)

color

white

pKa (20 °C)

6.2

solubility

water: 1.0 M (195.2 mg/ml)

cation traces

heavy metals: ≤1 ppm

shipped in

ambient

storage temp.

15-25°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

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This Item
239782475894391338
CAPS, ULTROL® Grade A zwitterionic buffer that is useful in the pH 7.9-11.1 range. Has a pKa of 10.40 at 25°C. Absorbance (100 mM, 260 nm):≤0.05.

Millipore

239782

CAPS, ULTROL® Grade

form

crystalline solid

form

solid

form

solid

form

crystalline powder

storage condition

OK to freeze, desiccated (hygroscopic)

storage condition

OK to freeze

storage condition

OK to freeze

storage condition

OK to freeze

color

white

color

white

color

white

color

white

pKa (20 °C)

6.2

pKa (20 °C)

10.4

pKa (20 °C)

6.2

pKa (20 °C)

-

solubility

water: 1.0 M (195.2 mg/ml)

solubility

water: 20 mg/mL

solubility

water: 5 mg/mL

solubility

water: 1 M

General description

A zwitterionic buffer useful in the pH range of 5.5-6.5 (absorbance: <0.05 at 260 nm, 1.0 M, H2O; pKa: 6.1 ± 0.2 at 25°C).
A zwitterionic buffer useful in the pH range of 5.5-6.5. Has a pKa of 6.10 at 25°C.
Absorbance (1.0 M, H2O, 260 nm): <0.05.

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, store in the refrigerator (4°C). Stock solutions are stable for up to 2 weeks at 4°C.

Other Notes

Good, N.E., et al. 1966. Biochemistry 5, 467.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
ULTROL is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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