Merck
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391338

Millipore

HEPES

A zwitterionic N-substituted aminosulfonic acid buffer. Useful in the pH 6.8-8.2 range. Has a pKa of 7.48 at 25°C. Absorbance (1.0 M, H2O, 260 nm):≤0.05.

Synonym(s):
N-(2-ヒドロキシエチル)ピペラジン-N′-(2-エタンスルホン酸), 4-(2-ヒドロキシエチル)ピペラジン-1-エタンスルホン酸
Empirical Formula (Hill Notation):
C8H18N2O4S
CAS Number:
Molecular Weight:
238.30
Beilstein:
883043
MDL番号:

品質水準

100

アッセイ

≥99% dry basis (titration)

形態

crystalline powder

manufacturer/tradename

Calbiochem®

保管条件

OK to freeze

white

useful pH range

6.8-8.2

pKa (25 °C)

7.5

溶解性

water: 1 M

微量陰イオン

chloride (Cl-): ≤0.01%
sulfate (SO42-): ≤0.05%

微量陽イオン

Na: ≤0.1%
heavy metals: ≤1 ppm

輸送温度

ambient

保管温度

15-25°C

SMILES string

OCCN1CCN(CC1)CCS(O)(=O)=O

InChI

1S/C8H18N2O4S/c11-7-5-9-1-3-10(4-2-9)6-8-15(12,13)14/h11H,1-8H2,(H,12,13,14)

InChI key

JKMHFZQWWAIEOD-UHFFFAOYSA-N

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詳細

Absorbance (1.0 M, H2O, 260 nm):≤0.05.

Absorbance (1.0 M, H2O, 280 nm): ≤0.04
A zwitterionic N-substituted aminosulfonic acid buffer. HEPES has its maximum buffering capacity very near the pH of mammalian tissue fluids (pKa of 7.31 at 37°C). Exhibits no metal binding and has a small temperature dependent ΔpKa of -0.014/°C.
A zwitterionic N-substituted aminosulfonic acid buffer. Useful in the pH 6.8-8.2 range. Has a pKa of 7.48 at 25°C.

包装

25 g in Plastic ampoule
5 kg in Fibre carton
100, 500 g in Glass bottle
1 kg in Glass bottle

警告

Toxicity: Irritant (B)

再構成

Following reconstitution, store at room temperature (20°C). Stock solutions are stable for up to 6 months at 20°C.

法的情報

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

保管分類コード

13 - Non Combustible Solids

WGK

WGK 1

引火点(°F)

Not applicable

引火点(℃)

Not applicable

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