TES, Free Acid | CAS 7365-44-8 | Chemical-Suppliers

Element: acid free

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C-S » Chemicals » tes-free-acid-PX69166

Identification

TES, Free Acid

CAS:

7365-44-8

EINECS:

230-906-3

Molecular Formula:

C₆H₁₅NO₆S

MDL:

MFCD00007532

SMILES:

C(CS(=O)(=O)O)NC(CO)(CO)CO

Synonym:

tes, for biochemistry, 99% ; tes free acid ; tes ; tes, 99%, for biochemistry ; tes free acid sigmaultra ; tesã€buffering agentã€‘ ; tes,biologicalbuffer ; tes vetec(tm) reagent grade, 99% ; tes, for biochemistry, 99+% ; c05353

Description

TES, Free Acid is a structural analog to Tris buffer. It is one of the ethanesulfonic acid series of biological buffers developed by Good et al. Good's buffer criteria: midrange pKa, maximum water solubility and minimum solubility in all other solvents, minimal salt effects, minimal change in pKa with temperature, chemically and enzymatically stable, minimal absorption in visible or UV spectral range, and easily synthesized. TES probably exists in solution as a zwitterion. Because the pKa is 7.4 (physiological pH) this buffer has considerable potential for a variety of biological applications. A buffer using TES free acid can be prepared by titrating the free acid with sodium hydroxide to the desired pH, using about a half-equivalent of NaOH. Alternatively, solutions of equimolar TES free acid and TES sodium can be mixed to attain a buffer of the desired pH.

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Prices & Availability

Data is processed

Properties for TES, Free Acid

Molecular Weight:

229.25 g·mol−1

Density:

~1.55 g/cm³ (Predicted)

Melting point:

~225 °C (dec.)

Boiling point:

446.62° C (Predicted)

Solubility:

H₂O: 1 M at 20 °C, clear, colorless

Physical Description:

white/clear crystalline powder

Safety & Transport Information

Risk Codes:

R36/37/38 - Irritating to eyes, respiratory system and skin

Safety Codes:

S22 - Do not breathe dust
S24/25 - Avoid contact with skin and eyes
S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S36 - Wear suitable protective clothing

Hazard Symbols:

Storage temperature :

Store at RT.

Alternative Distributors of [TES, Free Acid]

Producers or manufacturers change the product range from time to time. The following companies
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