BES BUFFER For Biochemistry

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Category: Biological Buffers

Description
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Description

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

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

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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

Packings

25 g	00025
100 g	00100

Safety Information

Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338

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