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You are here:Home » Biochemicals » Biochem-Molecular Biology » Tris Base USP

Tris Base USP


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Tris is one of the most widely used buffers in molecular biology and cell culture due to its low toxicity, stability and buffering capacity. Our USP Grade is very similar in specifications to ultrapure Tris (T8600).
Catalog #T8601
Purity 99.0%
Appearance: White, crystalline powder
pH (1M): 10.0-11.5
pKa: 8.0-8.4
Absorbance (260nm): 0.06
Absorbance (280nm): 0.05
Absorbance (290nm): 0.02
Solubility (1M): Colorless, clear, complete
Loss on Drying: 0.2%
Melting Point: 168-172ºC
Residue on Ignition: 0.1%
Heavy Metals (Pb): 0.0001%
Arsenic: 0.0001%
Calcium: 0.0001%
Copper: 0.0001%
Iron: 0.0005%
Magnesium: 0.0001%
Insoluble Matter: 0.005%
Conforms to USP
CAS Number77-86-1
Molecular FormulaC4H11NO3
Molecular Weight121.14
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
Alternate namesTris(hydroxymethyl)aminomethane;?2-Amino-2-(hydroxymethyl)-1,3-propanediol;?Tromethamine

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