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RDD008

Sigma-Aldrich

Trizma® base

≥99.9%, powder, anhydrous, Redi-Dri™

Synonym(s):

2-Amino-2-(hydroxymethyl)-1,3-propanediol, THAM, Tris base, Tris(hydroxymethyl)aminomethane, Trometamol

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About This Item

Linear Formula:
NH2C(CH2OH)3
CAS Number:
77-86-1
Molecular Weight:
121.14
Beilstein:
741883
EC Number:
201-064-4
MDL number:
MFCD00004679
UNSPSC Code:
12161700
PubChem Substance ID:
329824219
NACRES:
NA.25

product name

Trizma® base, anhydrous, free-flowing, Redi-Dri™, ≥99.9%

grade

anhydrous

Quality Level

100

description

aminopeptidase substrate

product line

Redi-Dri™

Assay

≥99.9%

form

powder

quality

free-flowing

does not contain

Carbon Fiber

impurities

≤0.2% Water (Karl Fischer)

color

white

pH

10.5-12
7-9

useful pH range

7-9

pKa (25 °C)

8.1

bp

219-220 °C/10 mmHg (lit.)

mp

167-172 °C (lit.)

solubility

water: soluble (Water < 0.2%)

absorption

≤0.05 at 290 nm at 40%

λ

(A290 UV absorbance < 0.05)
 in 5 mM Tris; DNA (40% (w/w))

SMILES string

NC(CO)(CO)CO

InChI

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

InChI key

LENZDBCJOHFCAS-UHFFFAOYSA-N

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General description

Tris is an established basimetric standard and buffer used in biochemistry and molecular biology. It may be used by itself as a buffer or as a component of mixed buffer formulations, such as Tris-EDTA (TE) buffer, Tris-acetate-EDTA (TAE) buffer, Tris-borate-EDTA (TBE) buffer, etc. It is pure, essentially stable, relatively non-hygroscopic and has a high equivalent weight.

Application

Tris base has been used:
  • To prepare Tris-HCl, which is used as a component of lysis buffer for protein characterization
  • In the preparation of Tris-buffered saline Tween-20 (TBST) buffer for Western blotting
  • In the preparation of TBS (Tris-buffered saline) that is used for dialysis to neutralize a protein
  • As a component of nuclei extraction buffer

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

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC
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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A Streamlined Method for the Preparation of Growth Factor-enriched Thermosensitive Hydrogels from Soft Tissue.
Poon CJ, et al.
Acta Biomaterialia (2013)
Top-down characterization of chicken core histones.
Wu H, et al.
Journal of Proteomics, 184, 34-38 (2018)
Extracellular protease digestion to evaluate membrane protein cell surface localization.
Besingi RN and Clark PL
Nature Protocols, 10(12), 2074-2074 (2015)
Active Cdk5 Immunoprecipitation and Kinase Assay.
Bankston AN, et al.
Bio-protocol, 7(13) (2017)
Preparation of Buffers for Use in Enzyme Studies.
Gomori G
Methods in Enzymology, 1, 138-146 (1955)
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Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

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