Tris Buffer 99.5% AR
Standard titrimetric substance Specially prepared for biochemistry and enzymology.
2-Amino-2-(hydroxymethyl)-1,3-propanediol; THAM; Tris base; Tris(hydroxymethyl)aminomethane; Trometamol
Product Code. |
02782 |
Grade |
|
Purity |
99.5% |
CAS No. |
77-86-1 |
Molecular Formula |
NH2C(CH2OH)3 |
Molecular Weight |
121.14 |
H.S.Code |
2922.50900 |
Shelf Life |
60 Months |
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 |
Packaging
Specification
| Appearance | White crystalline powder/ crystal |
| Assay (by HCl titration; on anhydrous basis) | Min 99.5% |
| pH (5% solution in water) | 10 - 11 |
| Absorbance (A1% /cm; ) ( 1 M Solution in HPLC water ) at 260 | Max 0.05 |
| at 280 | Max 0.04 |
| Melting point | 169 - 171°C |
| Chloride (Cl) | Max 0.001% |
| Water (H2O) | Max 0.5% |
| 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