Bis-tris methane

Bis-tris methane

Names
IUPAC name 2-[Bis(2-hydroxyethyl)amino]-2-(hydroxymethyl)propane-1,3-diol[1]
Other names Bis-(2-hydroxy-ethyl)-amino-tris(hydroxymethyl)-methane 2,2-Bis(hydroxymethyl)-2,2,2-nitrilotriethanol
Identifiers
Beilstein Reference	2205275
CAS Registry Number	6976-37-0 N
ChEBI	CHEBI:41250 Y
ChemSpider	73505 Y
EC number	230-237-7
Gmelin Reference	4519
InChI InChI=1S/C8H19NO5/c10-3-1-9(2-4-11)8(5-12,6-13)7-14/h10-14H,1-7H2 Y Key: OWMVSZAMULFTJU-UHFFFAOYSA-N Y
Jmol-3D images	Image
MeSH	Bistris
PubChem	81462
RTECS number	TY2900000
SMILES OCCN(CCO)C(CO)(CO)CO
Properties
Molecular formula	C8H19NO5
Molar mass	209.24 g·mol−1
Appearance	White crystals
Odor	Odourless
Melting point	102 °C (216 °F; 375 K)
Solubility in water	209.2 g L−1 (at 20 °C)
Acidity (pKa)	6.46
Basicity (pKb)	7.54
UV-vis (λmax)	280 nm
Absorbance	0.15
Hazards
GHS pictograms
GHS signal word	WARNING
GHS hazard statements	H315, H319, H335
GHS precautionary statements	P261, P305+351+338
EU classification	Xi
R-phrases	R36/37/38
S-phrases	S26, S36
NFPA 704	0 2 0
Related compounds
Related alkanols	N-Methylethanolamine Dimethylethanolamine Diethylethanolamine Diethanolamine N,N-Diisopropylaminoethanol Methyl diethanolamine Triethanolamine Meglumine
Related compounds	Diethylhydroxylamine
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
N verify (what is: Y/N?)
Infobox references

Bis-tris is an abbreviation of the trivial name (Bis(2-hydroxyethyl)-amino-tris(hydroxymethyl)-methane) for 2-[Bis(2-hydroxyethyl)amino]-2-(hydroxymethyl)-1,3-propanediol. It is generally used as a buffering agent in biochemistry. Bis-tris is an organic tertiary amine with labile protons having a pKa of 6.46 at 25°C. It is an effective buffer between the pH 5.8 and 7.3.

See also

• Bis-tris propane
• Tris
• Tricine

References