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异氰酸酯NCO中NCO含量的检测
发布时间：
2020-07-13 08:37
来源：
优莱博技术（北京）有限公司
| 领域： | 原油,汽油/柴油/重油 | ||
| 样品： | 异氰酸酯NCO | 项目： | 主要成分含量 |
| 方案文件名 | 下载 |
|---|---|
异氰酸酯NCO中NCO含量的检测 |
下载此篇方案 |
Determination of the exact concentration of the HCL titrant
We recommend ready to use HCl titrant. The exact concentration of the HCL 1.000 mol/l can be determined using the titrimetric standard Tris hydroxy amino methane (TRIS). The standard can be dried for 24 h in an exsiccator at room temperature.
1-2 g of the standard are weighed accurately in a 150 mL beaker and dissolved in 80 mL of dist. water with stirring. It is titrated with the 1 mol/l HCl solution.
Repeat the standardization two times. The average value is stored automatically in the exchangeable unit.
