TES -- CAS No: 7365-44-8
| CAS Registry Number |
7365-44-8 |
| Name |
TES |
| Synonyms |
N-[Tris(hydroxymethyl)methyl]-2-aminoethanesulfonic acid, TES free acid, 2-[(2-Hydroxy-1,1-bis(hydroxymethyl)ethyl)amino]ethanesulfonic acid |
| Molecular Formula |
C6H15NO6S |
| Molecular Weight |
229.25 |
| Molecular Structure |
 |
| Test |
T1103, Ultra Pure |
T1105, Ultra BioPure |
| Appearance |
White crystalline powder |
White crystalline powder |
| Assay (by titration, on dried basis) |
≥ 98.0% |
≥ 98.0% |
| Solubility (0.1M solution in H2O) |
Clear, complete and colorless |
Clear, complete and colorless |
| Identification (by IR) |
Conforms to structure |
Conforms to structure |
| Melting Point |
≤ 218ºC |
≤ 218ºC |
| Water (KF) |
≤ 1.0% |
≤ 1.0% |
| pH (0.1M solution in water) |
4.2 – 4.8 |
4.2 – 4.8 |
| pKa (@ 20ºC) |
7.2 – 7.6 |
7.2 – 7.6 |
| UV Absorption (0.1M @260nm) |
≤ 0.10 |
≤ 0.10 |
| Heavy Metals (Lead) |
≤ 0.0005% |
≤ 0.0005% |
| Biological Impurity Testing |
| Test |
T1103, Ultra Pure |
T1105, Ultra BioPure |
| Endotoxin (0.1% solution in H2O) |
-- |
≤ 0.10 EU/mL |
| Bioburden |
-- |
≤ 100 CFU/g |
| RNase, DNase, Nickase, Protease |
-- |
Non detected |
| Specification Sheet |
| Specification Sheet |
 |
|
MSDS
| MSDS |
| Material Safety Data Sheet |