648317

Millipore

Tris, Hydrochloride, Molecular Biology Grade - CAS 1185-53-1 - Calbiochem

Useful in the pH range of 7.0-9.0. Has a pKa of 8.1 at 25°C.

Synonym(s):
Trizma® hydrochloride, tris(Hydroxymethyl)aminomethane, HCl, TRIS HCl, Tris(hydroxymethyl)aminomethane hydrochloride, TRIS hydrochloride, Tromethane hydrochloride
Linear Formula:
NH2C(CH2OH)3 · HCl
CAS Number:
Molecular Weight:
157.60
Beilstein/REAXYS Number:
3675235
MDL number:

storage conditions

+15C to +30C

Quality Level

assay

≥99% (titration)

form

crystalline solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
desiccated (hygroscopic)

color

white

useful pH range

7.0 - 9.0

pKa (25 °C)

8.1

solubility

water: soluble

cation traces

heavy metals (as Pb): ≤0.0002%

absorption

≤0.05 at 260 nm
≤0.05 at 280 nm

foreign activity

DNases, proteases, RNases, none detected

shipped in

ambient

storage temp.

15-25°C

SMILES string

Cl.NC(CO)(CO)CO

InChI

1S/C4H11NO3.ClH/c5-4(1-6,2-7)3-8;/h6-8H,1-3,5H2;1H

InChI key

QKNYBSVHEMOAJP-UHFFFAOYSA-N

General description

Widely used biological buffer (absorbance: ≤0.05 at 260 nm and 280 nm). Useful in the pH range of 7.0-9.0. Has a pKa of 8.1 at 25°C.
Useful in the pH range of 7.0-9.0. Has a pKa of 8.1 at 25°C.

Application

The pH values of all buffers are temperature and concentration dependent. For Tris buffers, pH increases about 0.03 unit per °C decrease in temperature, and decreases 0.03-0.05 unit per ten-fold dilution.
For precise applications, use a carefully calibrated pH meter with a glass/calomel combination electrode.

Packaging

1 kg in Glass bottle
100 g in Plastic ampoule

Warning

Toxicity: Standard Handling (A)

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Trizma is a registered trademark of Sigma-Aldrich Co. LLC

WGK Germany

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

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