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Sigma-Aldrich

Tris(hydroxymethyl)aminomethane

ACS reagent, ≥99.8%

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Synonym(s):
2-Amino-2-(hydroxymethyl)-1,3-propanediol, THAM, Tris base, Trometamol
Linear Formula:
NH2C(CH2OH)3
CAS Number:
77-86-1
Molecular Weight:
121.14
Beilstein:
741883
EC Number:
201-064-4
MDL number:
MFCD00004679
PubChem Substance ID:
24855244
NACRES:
NA.25

grade

ACS reagent

Quality Level

200

Assay

≥99.8%
99.8-100.1%

form

crystalline

impurities

≤0.005% insolubles
≤2% water

useful pH range

7-9

pKa (25 °C)

8.1

bp

219-220 °C/10 mmHg (lit.)

mp

167-172 °C (lit.)

cation traces

Fe: ≤5 ppm
heavy metals: ≤5 ppm (ICP)

absorption

passes test

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(hydroxymethyl)aminomethane is mainly required for preparation of buffers at physiological range of 7.3 to 7.5. The prepared buffers are compatible with biological fluids. It is of importance to laboratories as a standard pH solution.

Application

Tris(hydroxymethyl)aminomethane has been used as a buffer solution for lactate dehydrogenase assay, in situ hybridization procedure and protein extraction from cells.

Other Notes

Easily compare specifications for Trizma products with the Trizma specification table.

Legal Information

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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An optimized lactate dehydrogenase release assay for screening of drug candidates in neuroscience.
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