4.Ethyl cellulose was synthesized successfully in one step based on reaction of cellulose with excess chloroethane and sodium hydroxide in toluene as diluent.
纤维与过量的氯乙烷及氢氧化钠反应,以甲苯为稀释剂,一步法成功地合成了乙基纤维。
5.Microbiological media, diluents, rinses and test items must be labeled in such a manner that the full details of preparation and, where applicable, sterilization or depyrogenation are traceable.