|
| Название (рус.): | Пластмассы. Непластифицированная ацетилцеллюлоза. Определение выхода уксусной кислоты |
| Название (англ.): | Plastics; Unplasticized cellulose acetate; Determination of acetic acid yield |
| Описание (англ.): | Specifies two methods for the determination of acetic acid yield of unplasticzed celllulose acetate by alkaline hydrolysis. In method A a test portion of fine powdered celluloseacetate (particle size below 710 um) is reacted in a water-acetone mixture with an excess of standard volumetric sodium hydroxide solution.In method B the test portion isdissolved in dimethylsulfoxide and then reacted with sodium hydroxide solution. In both cases the quantity of sodium hydroxide consumed for hydrolysis is determined by backtitration. |
| Заменён стандартами: | ISO 1597(1994.10) |
| Дата введения: | 01.06.75 |
| Дата отмены: | 01.10.94 |
| Код КГС: | Л29 |
| Код ОКСТУ: | 2231;2209 |
| Код ОКП: | 2231;2209 |
| Нормативные ссылки: | BS 2880-1957, NEQ*NEN 21597-1975, EQV*UNI ISO 1597(1989/UNI), EQV |
| Ключевые слова: | ACETIC ACID CELLULOSE ACETATE CELLULOSE DERIVATIVES CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT PLASTICS VOLUMETRIC ANALYSIS CHEMICAL ANALYSIS AND TESTIN |
|