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Product Detail
| Tris |
AB14042 |
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|
tris [hydroxymethyl] aminomethane, tromethamine,
endotoxin tested |
Specifications:
| CAS | 77-86-1 |
| grade | USP/ACS |
| formula weight | 121.14 |
| formula | C4H11NO3 |
| physical description | white powder |
| |
| appearance | pass | |
| assay (on dry basis) | 99.9% | 100.1% |
| melting range | 169.0°C | 173.0°C |
| pH of 5% Aqueous solution | 10.0 | 11.5 |
| water by KF | | 0.3% |
| heavy metals as Pb | | 2.0ppm |
| heavy metals as Fe | | 5.0ppm |
| magnesium | | 1.0ppm |
| calcium | | 1.0ppm |
| absorbance A 260 (1M solution) | | 0.06 |
| absorbance A 280 (1M solution) | | 0.05 |
| absorbance A 290 (1M solution) | | 0.20 |
| insoluble matter | | 50.0ppm |
| identification by IR | pass | |
| residue on ignition | | 0.1% |
| organic volatile impurities | pass | |
| endotoxins | | 2.5eu/g |
Notes and Applications
biological buffer
pka: 8.3, effective buffer range pH 7.0 - 9.1
store dry at room temperature
| Product |
Description |
Size |
Price |
| AB14042-00500 |
TRIS |
500g |
$44.34 |
| AB14042-10000 |
TRIS |
10kg |
$600.74 |
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