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Lab Chemicals
Good's Buffer (Biological Buffers)
TRIS BUFFER
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
Article No.
06392
Grade
AR
Purity
99.5%
CAS No.
77-86-1
Molecular Formula
NH
2
C(CH
2
OH)
3
Molecular Weight
121.14
H.S. Code
2922.5090
Shelf Life
60 Months
MSDS
DE
EN
FR
KO
PT
ES
TH
TR
Certificate of Analysis (COAs)
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
100 g
(00100)
500 g
(00500)
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
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338
Revision Date :
02-Nov-2019