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PHG0002

TRIS hydrochloride

Name: TRIS hydrochloride
Brand: SIGMA

Synonym(s):

Trizma^® hydrochloride, TRIS HCl, TRIS hydrochloride, Tris(hydroxymethyl)aminomethane hydrochloride, Tromethane hydrochloride

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About This Item

Linear Formula:

NH₂C(CH₂OH)₃ · HCl

CAS Number:

1185-53-1

Molecular Weight:

157.60

Beilstein:

3675235

EC Number:

214-684-5

MDL number:

MFCD00012590

UNSPSC Code:

12161700

NACRES:

NA.21

biological source

synthetic

form

powder

technique(s)

cell culture | mammalian: suitable

impurities

Endotoxin, microbial, and trace metals; tested

useful pH range

7.0-9.0

pKa (25 °C)

8.1

suitability

suitable for manufacturing use

foreign activity

Cytotoxicity, DNase, NICKase, RNase, and Protease; tested

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

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Application

Tris HCl is a commonly used biological buffer. Tris/Tris HCl as a buffering system has a very broad usage in biological systems for biopharmaceutical manufacturing, cell culture, diagnostics and molecular biology. The pKa of Tris is 7.77 which corresponds closely to a physiological pH of 7.36.

Tris HCl is used as the conjugate buffer component with Tris/Tromethamine/Trizma in biopharmaceutical buffer formulations (both upstream and downstream applications), electrophoresis separations and diagnostic reagent formulations.

Other Notes

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.

Legal Information

Trizma is a registered trademark of Merck KGaA, Darmstadt, Germany

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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