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Specifications

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 Number	77-86-1
Molecular Formula	C4H11NO3
Molecular Weight	121.14
Important Note	This 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 names	Tris(hydroxymethyl)aminomethane;?2-Amino-2-(hydroxymethyl)-1,3-propanediol;?Tromethamine