Trizma® base Primary Standard and Buffer =99.9 (titration) crystalline 250G
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Specifications
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Synonym | 2-Amino-2-(hydroxymethyl)-13-propanediol |
| THAM |
| Tris base |
| Tris(hydroxymethyl)aminomethane |
| Trometamol |
Molecular Formula | NH2C(CH2OH)3 |
Molecular Weight | 121.14 |
CAS Number | 77-86-1 |
assay | ≥99.9% (titration) |
form | crystalline |
total impurities | ≤0.2% water (Karl Fischer) |
color | white |
pH range | 7 - 9 |
useful pH range | 7 - 9 |
pKa | (25 °C) 8.1 |
bp | 219-220 °C10 mm Hg(lit.) |
mp | 167-172 °C(lit.) |
cation traces heavy metals (as Pb) | ≤2 ppm |
abs. | A40%/290 ≤0.05 |
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