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Tris Base Cas 77-86-1

Appearance: White crystal powder
Packaing: 25kgs per drum
Sample: Available
  • Ensince Industry

Quick Details

Chemical Name: Tris Base
CAS No.: 77-86-1
Molecular Fomula: C4H11NO3

Chemical Structure:Tris Base CAS 77-86-1

Tris Base Molecular Weight: 121.14

Tris Base PH(5%):10.0-11.5

Appearance: White crystal powder


Typical Properties

Item Specifications
Content 99.5%—101.0%
Moisture(by karl fischer) ≤0.3%
Insolubles ≤0.005%
PH(5%) 10.0-11.5
UV Absorbance(290nm,40%) ≤0.2
UV Absorbance(400nm 40%) ≤0.2
Heavy metals(as pb) ≤5ppm
Fe ≤5ppm
Cl ≤3ppm
Solubility (1.0M solution in water) Immediately soluble yielding a clear haze-free solution free of particulates
Residue on ignition ≤0.05%
Melting point(℃) 168.0-172.0
Appearance White crystal powder


1. Tris is often used as a biological buffer with a pH of 6.8, 7.4, 8.0, 8.8.

2. Tris is widely used in the preparation of buffers for biochemical and molecular biology experiments. For example, tries are commonly used in TAE and TBE buffers (for the solubilization of nucleic acids) andin biochemical experiments. Since it contains an amino group, it can undergo a condensation reaction with an aldehyde.

3. Tris is a weak base, and its pKa is 8.1 at room temperature (at 25 ° C; according to the buffer theory, the effective buffer range of Tris buffer is between pH 7.0 and 9.2.

4. The pH of the aqueous solution of the Tris base is about 10.5. Usually, hydrochloric acid is added to adjust the pH to the desired value to obtain a buffer of the pH. But at the same time, attention should be paid to the effect of temperature on the pKa of Tris.

Packaging and Shipping

Tris Base25kgs per drum


Dry cool place