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BES BUFFER For Biochemistry

N,N-bis (2-hydroxyethyl) 2-aminoethane sulphonic acid

COAs

Packings

25 g (00025)

100 g (00100)

1PW1200060 1PW1200200
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Article No. 1927D Grade For Biochemistry
Purity 99% CAS No. 10191-18-1
Molecular Formula C6H15NO5S Molecular Weight 213.25
H.S. Code 2922.1990 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Solid Colour White powder
pH value 2.5- 5.0 Melting point/ Freezing point [°C] 152 - 154 °C
Solubility in water [% weight] 213.3 g/l at 20 °C

Specifications

Appearance White powder Assay (alkalimetric) Min 99%
Identity (IR) Passes test UV absorbance (at 250 nm; 5%; 1 cm; water) Max 0.05
Chloride (Cl) Max 0.005% Sulphate (SO4) Max 0.005%
Heavy metal (as Pb) Max 0.0005% Sodium (Na) Max 0.01%
Loss on drying (at 105°C) Max 0.5% Biological buffer, pKa at 20°C 7.15

Safety Information and Hazard Symbols

Exclamation Mark
Symbol: GHS07
 Signal Word: Warning
 Hazardous Statement: H315-H319-H335
 Precaution Statement: P261-P305 + P351 + P338
Revision Date: 29-Nov-2018

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