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93352 Sigma-Aldrich

Trizma® base

≥99.0% (T)

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

  • CAS Number 77-86-1

  • Linear Formula NH2C(CH2OH)3

  • Molecular Weight 121.14

  •  Beilstein/REAXYS Number 741883

  •  EC Number 201-064-4

  •  MDL number MFCD00004679

  •  PubChem Substance ID 329770229

  •  NACRES NA.25

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Properties

Quality Level   200
description   aminopeptidase substrate
product line   BioChemika
assay   ≥99.0% (T)
form   crystalline
loss   ≤1% loss on drying, 110 °C
pH   10.5-12.0(4 m in water, 25 °C)
useful pH range   7 - 9
pKa (25 °C)   8.1
bp   219-220 °C/10 mmHg (lit.)
mp   167-172 °C (lit.)
  168-172 °C
solubility   H2O: 1 M at 20 °C, clear, colorless
anion traces   chloride (Cl-): ≤50 mg/kg
  sulfate (SO42-): ≤50 mg/kg
cation traces   Ca: ≤10 mg/kg
  Cd: ≤5 mg/kg
  Co: ≤5 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤5 mg/kg
  K: ≤50 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤5 mg/kg
  Na: ≤50 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Zn: ≤5 mg/kg
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

Description

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

Trizma® base was used as buffer for the following studies:
• Electrophoretic transfer for the specific identification of isozymes of starch debranching enzyme, α-amylase and 9-amylase.
• Electrophoretic separation of lipoproteins in polyacrylamide gels.
• Preparation of TRIS buffer having pH 8.
It may be used to compose DN buffer for DNA nick-end labeling of tissue sections.

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 Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 1
RTECS 
TY2900000
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles
Peer-Reviewed Papers
15

References

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