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T6508

Sigma-Aldrich

三氟乙酸

ReagentPlus®, 99%

别名:

TFA

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About This Item

线性分子式:
CF3COOH
CAS号:
76-05-1
分子量:
114.02
Beilstein:
742035
EC號碼:
200-929-3
MDL號碼:
MFCD00004169
分類程式碼代碼:
12352106
PubChem物質ID:
329826846
NACRES:
NA.21

蒸汽密度

3.9 (vs air)

品質等級

200

蒸汽壓力

97.5 mmHg ( 20 °C)

產品線

ReagentPlus®

化驗

99%

形狀

liquid

雜質

≤0.05% water

折射率

n20/D 1.3 (lit.)

pH值

1 (10 g/L)

bp

72.4 °C (lit.)

mp

−15.4 °C (lit.)

溶解度

ethanol: soluble 0.33 mL/mL

密度

1.489 g/mL at 20 °C (lit.)

SMILES 字串

OC(C(F)(F)F)=O

InChI

1S/C2HF3O2/c3-2(4,5)1(6)7/h(H,6,7)

InChI 密鑰

DTQVDTLACAAQTR-UHFFFAOYSA-N

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一般說明

三氟乙酸（TFA）是一种有机氟化合物，在有机合成中用作各种酸催化反应的试剂，如环氧化合物开环、仿生环化、Cope 重排和天然产物合成。由于 TFA 的高挥发性、在有机溶剂中的溶解度和酸性强度，其物理化学特性比其他酸更有优势。当 TFA 用作试剂时，由于极高的挥发性，可以轻松通过蒸发分离产物。挥发性较低的酸，如硫酸或对甲苯磺酸，可能需要中和或萃取处理。

應用

三氟乙酸可用作以下反应的试剂：      
  • 用于裂解氮氧保护基团，如 N-、N-苄基氧甲基、苯醚、对甲氧基苯醚、对丁基醚、对丁基氧甲基醚、三苯基甲基醚和二甲基缩醛。      
  • 在 Baeyer-Villiger 氧化反应中与过碳酸钠结合。，
  • 芳烃的 C-H 三氟甲基化。

TFA 还可以用作：      
  • 原子转移环化反应和聚合物过程中的溶剂。      
  • 催化剂，在非质子溶剂中通过环己酮肟贝克曼重排法合成 ε-己内酰胺。

包裝

每支安瓶中1 mL。

法律資訊

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

象形圖

CorrosionExclamation mark
GHS05,GHS07

訊號詞

Danger

危險聲明

H314,H332,H412

危險分類

Acute Tox. 4 Inhalation - Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1A

儲存類別代碼

8A - Combustible corrosive hazardous materials

水污染物質分類（WGK）

WGK 2

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