TRIS BUFFER AR

Standard titrimetric substance Specially prepared for biochemistry and enzymology.
2-Amino-2-(hydroxymethyl)-1,3-propanediol; THAM; Tris base; Tris(hydroxymethyl)aminomethane; Trometamol

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Article No.
06392
Grade
AR
Purity
99.5%
CAS No.
77-86-1
Molecular Formula
NH2C(CH2OH)3
Molecular Weight
121.14
H.S. Code
2922.5090
Shelf Life
60 Months
MSDS
 

 

Physical Properties

Physical state at 20 °C
Solid
Colour
White crystalline
pH value
10.5 - 12
Melting point/ Freezing point [°C]
167 - 172 °C
Boiling point [°C]
219 - 220 °C
Initial boiling point [°C]
219°C
Final boiling point [°C]
220 °C
Solubility in water [% weight]
Soluble in water

Packings

  • 1PW1200100

    100 g (00100)

  • 1PW1200500

    500 g (00500)

  • 1PW1206500

    5000 g (05000)

 

Specifications

Appearance White crystalline powder
Assay (by HClO4 titration; on dried basis) Min 99.5%
pH (5% solution in water) 10 - 11
Melting point 169 - 171°C
Chloride (Cl) Max 0.001%
Sulphated ash Max 0.01%
Water (H2O) Max 0.5%
Absorbance (A1%/1cm; 10% in water) -
at 260 nm Max 0.02
at 280 nm Max 0.02
at 300 nm Max 0.02
at 405 nm Max 0.004
at 430 nm Max 0.004
Biological buffer at 25°C pKa 8.07

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 : 02-Nov-2019
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