2-[Tris(hydroxymethyl)methylamino]-1-ethanesulfonic acid

2 - [[tri (hydroxymethyl) methyl] amino] ethanesulfonic acid property melting point~225 ° C (dec.) density 1.260 (estimate) refractive index 1.5500 (estimate) storage conditions Keepinmarkplace, Sealedindry, RoomTemperature solubility H2O: 1Mat20 ° C, clear, colorless form CrystalinePowder color White acid-base indicator discoloration ph range 6.8-8.2PH value 3.5-5.0 (25 ℃, 1MinH2O) acidity coefficient (pKa) 7.5 (at25 ℃) odor (Odor) ChemicalbookOdorless water dissolution sex SOLUBLE maximum wavelength（ λ max) λ: 260nmAmax:0.055 λ: 280nmAmax: 0.045Merck149176BRN1957061InChiKeyJOCBASBOOFNAJA-UHFFFAOYSA-NCAS database 7365-44-8 (CASDataBaseReference) EPA chemical information Ethanesulfonic acid, 2 - [[2-hydroxy-1,1-bis (hydroxymethyl) ethyl] amino] - (7365-44-8)