TRIS BUFFER
TRIS BUFFER AR
Standard titrimetric substance Specially prepared for biochemistry and enzymology.
Short Name: TRIS BUFFER
Synonym: 2-Amino-2-(hydroxymethyl)-1,3-propanediol; THAM; Tris base; Tris(hydroxymethyl)aminomethane; Trometamol
Basic Details
Article No.
LG4691
Grade
AR
Purity
99.5%
CAS No.
77-86-1
HS Code
2922.5090
Shelf Life
60 Months
Packings Avialable
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
Chemical 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 & Hazard Symbols
Symbol
GHS07
Signal Word
Warning
Hazardous Statement
H315-H319-H335
Precaution Statement
P261-P305 + P351 + P338