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sklademVydáno: 1988
ISO 8661
Caprolactam for industrial use — Determination of volatile bases content — Titrimetric method after distillation
Měna
| Označení normy: | ISO 8661 |
| Počet stran: | 3 |
| Vydání: | 1 |
| Vydáno: | 1988 |
Popis
ISO 8661
The volatile bases are distilled in alkaline medium under specified conditions and collected in a known volume of a standard volumetric hydrochloric acid solution in the presence of an indicator. The excess of the acid is titrated with a standard volumetric sodium hydroxide solution.