品牌 | 货号 | 期货/现货 | 规格 | 价格 | 数量 |
---|---|---|---|---|---|
罗恩 | R197907-10ml | 现货 | 10ml | 365 折扣中 |
|
罗恩 | R197907-50ml | 现货 | 50ml | 1313 折扣中 |
|
罗恩 | R197907-250ml | 现货 | 250ml | 3725 折扣中 |
|
Trifluoroacetic anhydride (TFAA) is the acid anhydride of trifluoroacetic acid. It is the perfluorinated derivative of acetic anhydride. Like many acid anhydrides, it may be used to introduce the corresponding trifluoroacetyl group. The corresponding acyl chloride, trifluoroacetyl chloride, is a gas, making it inconvenient to work with. Trifluoroacetic anhydride is the recommended desiccant for trifluoroacetic acid.
生产方法
其制备方法是用三氟乙酸与二氯乙酸酐反应。反应方程式:CF3COOH+(Cl2CHCO)2O→(CF3CO)2O+Cl2CHCOOH
用途
主要用作分析试剂、溶剂、催化剂、脱水缩合剂、羧基和氨基三氟乙酰化时的保护剂。