T1503 | CAS:77-86-1 | Trizma base | Tris | 三羟甲基氨基甲烷

T1503  Trizma® base Sigma    Primary Standard and Buffer, ≥99.9% (titration), crystalline 窗体底端 货号 号 目录价 RMB T1503-25G 219.96 T1503-100G 310.05 T1503-250G 420.03 T1503-500G 470.34 T1503-1KG 490.23 T1503-5KG 1,999.53 T1503-10KG 询问 Synonym: 2-Amino-2-(hydroxymethyl)-1,3-propanediol, THAM, Tris base, Tris(hydroxymethyl)aminomethane, Trometamol CAS Number: 77-86-1 Linear Formula: NH2C(CH2OH)3 Molecular Weight: 121.14 Beilstein Registry Number: 741883 EC Number: 201-064-4 MDL number: MFCD00004679 PubChem Substance ID: 24899973 Description Frequently Asked Questions Live Chat and Frequently Asked Questions are available for this Product. General description A 40% (w/w) solution in water is clear and colorless. Other Notes Easily compare specifications for Trizma products with the Trizma specification table.   The pH values of all buffers are temperature- and concentration-dependent. For Tris buffers, pH increases about 0.03 unit per °C decrease in temperature, and decreases 0.03-0.05 unit per ten-fold dilution. For precise applications, use a carefully calibrated pH meter with a glass/calomel combination electrode. Legal Information Trizma is a registered trademark of Sigma-Aldrich Biotechnology LP and Sigma-Aldrich Co. Protocols & Applications Ensure correct concentrations of buffer solutions with the Buffer Calculator 性质 assay ≥99.9% (titration) form crystalline total impurities ≤0.2% water (Karl Fischer) color white pH range 7 - 9 useful pH range 7 - 9 pKa (25 °C) 8.1 EQP level Elite bp 219-220 °C/10 mmHg(lit.) mp 167-172 °C(lit.) cation traces heavy metals (as Pb): ≤2 ppm abs. A40%/290 ≤0.05 安全性 Personal Protective Equipment dust mask type N95 (US), Eyeshields, Gloves Hazard Codes Xi Risk Statements 36 Safety Statements 26 WGK Germany 2 RTECS TY2900000