Basic information
- Name:
Ethanesulfonic acid,2-[bis(2-hydroxyethyl)amino]-
- Superlist Name:
- BES
- CAS No.:
10191-18-1
- Molecular Structure:
![Molecular Structure of 10191-18-1 (Ethanesulfonic acid,2-[bis(2-hydroxyethyl)amino]-)](http://www.lookchem.com/300w/2010/0612/10191-18-1.jpg)
- Formula:
- C6H15NO5S
- Synonyms:
- Taurine,N,N-bis(2-hydroxyethyl)- (8CI);BES (buffering agent);N,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid;N,N-Bis(2-hydroxyethyl)-2-aminoethanesulphonic acid;N,N-Bis(2-hydroxyethyl)taurine;NSC 166667;
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Chemistry
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IUPAC Name: 2-[Bis(2-hydroxyethyl)amino]ethanesulfonic acid
Canonical SMILES: C(CO)N(CCO)CCS(=O)(=O)O
InChI: InChI=1S/C6H15NO5S/c8-4-1-7(2-5-9)3-6-13(10,11)12/h8-9H,1-6H2,(H,10,11,12)
Empirical Formula: C6H15NO5S
Molecular Weight: 213.252
EINECS: 233-465-5
Product Categories: Pharmaceutical Intermediates; Biochemistry; Good's Buffers; Buffer
Melting Point: 150-155 °C
storage temp.: Store at RT.
solubility: H2O: 1 M at 20 °C, clear, colorless
Water Solubility: Soluble
Index of Refraction: 1.548
Molar Refractivity: 47.12 cm3
Molar Volume: 148.3 cm3
Surface Tension: 70.4 dyne/cm
Density of BES (CAS NO.10191-18-1): 1.437 g/cm3
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| quail | LD50 | oral | > 316mg/kg (316mg/kg) | Ecotoxicology and Environmental Safety. Vol. 6, Pg. 149, 1982 |
Safety Profile
Hazard Codes: 
Xi
Risk Statements: 36/37/38
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany: 3
RTECS: KI7363500
Specification
BES (CAS NO.10191-18-1), its Synonyms are 2-(bis(2-hydroxyethyl)amino)ethane sulfonic acid ; N,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid ; N,N-Bis(hydroxyethyl)-2-aminoethanesulfonic acid ; Taurine, N,N-bis(2-hydroxyethyl)- ; N,N-Bis(2-hydroxyethyl)aminoethanesulfonic acid . It is clear cryst. powder.
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