Trizma ® 碱

描述

aminopeptidase substrate

产品线

BioXtra

检测方案

≥99.9% (titration)

形式

crystalline

杂质

≤0.005% Insoluble matter

灼烧残渣 (900 °C)

≤0.01% (as SO4)

缺失

≤0.5% loss on drying, 110°C

pH值（酸碱度）

10.5-12.0 (1 M in H2O)

useful pH range

7-9

pKa (25 °C)

8.1

bp

219-220 °C/10 mmHg (lit.)

mp

167-172 °C (lit.)

溶解性

H2O: 1 M, colorless

痕量阴离子

chloride (Cl-): ≤0.005%
sulfate (SO42-): ≤0.005%

痕量阳离子

Al: ≤0.0005%
As: ≤0.0001%
Ba: ≤0.0005%
Bi: ≤0.0005%
Ca: ≤0.001%
Cd: ≤0.0005%
Co: ≤0.0005%
Cr: ≤0.0005%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.005%
Li: ≤0.0005%
Mg: ≤0.0005%
Mn: ≤0.0005%
Mo: ≤0.0005%
Na: ≤0.005%
Ni: ≤0.0005%
Pb: ≤0.0005%
Sr: ≤0.0005%
Zn: ≤0.0005%

吸光度

≤0.020 at 280 in H2O at 1 M
≤0.025 at 260 in H2O at 1 M