| 分子式 | |
| 其他事项 | 4.120157Tris(hydroxymethyl)aminomethaneACS(HOCH2)3CNH2 M.= 121.14CAS No. 77-86-1Assay (Total base, on dry basis) ≥ 99.75% Infrared spectrometry authentic Water (KF) ≤ 2% Heavy metals (as Pb) ≤ 5 ppmIron (Fe) ≤ 5 ppm UV absorption (40% aq. soln.) (1 cm cell)λ 290 nm max 0.2 |
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