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69890

MES 水和物

Name: MES 水和物
Brand: SIGMA

BioUltra, ≥99.5% (T)

別名:

2-(N-モルホリノ)エタンスルホン酸水和物, 4-モルホリンエタンスルホン酸

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あなたへ/カタログ番号	在庫状況	単価

この商品について

実験式（ヒル表記法）:

C₆H₁₃NO₄S · xH₂O

CAS番号:

1266615-59-1

分子量:

195.24 (anhydrous basis)

UNSPSC Code:

12161700

eCl@ss:

32129211

PubChem Substance ID:

57652220

NACRES:

NA.25

MDL number:

MFCD00149409

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特性

product line

BioUltra

Quality Segment

200

assay

≥99.5% (T)

form

powder or crystals

impurities

insoluble matter, passes filter test

ign. residue (900 °C)

≤0.05%

pH

2.5-4.0 (25 °C, 0.5 M in H₂O)

useful pH range

5.5-6.7

pKa

6.1

solubility

H₂O: 0.5 M at 20 °C, clear, colorless

anion traces

chloride (Cl^-): ≤50 mg/kg, sulfate (SO₄^2-): ≤100 mg/kg

cation traces

Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤20 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg

λ

0.5 M in H₂O

UV absorption

λ: 260 nm A_max: 0.025, λ: 280 nm A_max: 0.020

SMILES string

O.OS(=O)(=O)CCN1CCOCC1

InChI

1S/C6H13NO4S.H2O/c8-12(9,10)6-3-7-1-4-11-5-2-7;/h1-6H2,(H,8,9,10);1H2

InChI key

MIIIXQJBDGSIKL-UHFFFAOYSA-N

詳細

General description

MES is one of the "Good" buffers developed for biological applications. MES is not recommended at pH 7.4; other buffers should be considered. All qualities are tested for trace ions and all can be used for biological and biochemistry applications. This product is used in biochemical and biological techniques where highly purified products are needed.

Preparation Note

A buffer using MES free acid can be prepared by titrating the free acid with sodium hydroxide to the desired pH (pKa=±1). Alternatively, volumes of equimolar MES free acid and sodium MES can be mixed to attain the desired pH. Standard mixing tables using stock solutions to prepare a buffer of a given pH have been published.

Other Notes

MES水和物製品を簡単に比較検討できるMES水和物規格表をご参照ください。

Solubility/Stability: MES is soluble in water, giving a clear colourless solution at concentrations of 0.5M or higher. The pH of a solution should be between 2.5 and 5, depending on the concentration. Solutions are stable at 2-8°C for months.
Sterilization: Sterilization should be by filteration through 0.2μM filters. Autoclaving is not recommended by any sulfonic acid buffers. If buffers must be nuclease-free, it is best to treat the water, then add the buffer solids after autoclaving. When MES solutions are autoclaved, they turn yellow (although pH does not change measurably. The identity of the yellow breakdown product is unknown.

Biological buffer; useful pH-range 5.8-6.5; Mobile phase component in brain tubulin isolation by amino-activated gel chromatography; Buffer in plant tissue culture.

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当該品目	M2933	M5287	M8250
Sigma-Aldrich 69890 MES 水和物	Sigma-Aldrich M2933 MES 水和物	Sigma-Aldrich M5287 MES 水和物	Sigma-Aldrich M8250 MES 水和物
assay ≥99.5% (T)	assay ≥99.5%	assay ≥99.5% (titration)	assay ≥99.5% (titration)
product line BioUltra	product line -	product line BioXtra	product line -
Quality Level 200	Quality Level 400	Quality Level 400	Quality Level 400
form powder or crystals	form crystalline powder	form crystalline powder	form crystalline powder
pH 2.5-4.0 (25 °C, 0.5 M in H₂O)	pH -	pH 2.5-4.0 (0.5 M in H₂O)	pH -
solubility H₂O: 0.5 M at 20 °C, clear, colorless	solubility water: 335.3 g/L at 20 °C	solubility H₂O: 0.5 M, clear, colorless, water: 335.3 g/L at 20 °C	solubility water: 0.25 g/mL, clear, colorless

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保管分類

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c