Trifluoroacetic anhydride

CAS Number
407-25-0
EC Number
206-982-9
Abbreviation
TFAA

What is Trifluoroacetic anhydride?

Trifluoroacetic anhydride (CAS 407-25-0), commonly abbreviated as TFAA, is a highly reactive acylating agent.

Where is Trifluoroacetic anhydride used?

  • Pharmaceutical and agrochemical synthesis: introduces trifluoroacetyl groups to amines, alcohols, and other nucleophiles, supporting the production of APIs and intermediates
  • Polymer and specialty materials: modifies surface properties and introduces fluorine content into polymer backbones, improving thermal stability and flame retardant performance
  • Textile and leather processing: surface modification and preservation chemistry
  • Printing and packaging: preparation of specialty coatings and functional additives
  • It activates and protects functional groups in complex organic molecules.

Commercial specifications

  • Purity levels commonly at 99% or higher for synthesis-critical applications
  • Packaging from small laboratory quantities to bulk drums

Other Names (Synonyms)

Trifluoroacetic acid anhydride|Bis(trifluoroacetic) anhydride|Perfluoroacetic anhydride|Trifluoroacetyl anhydride|Hexafluoroacetic anhydride|Anhydrid kyseliny trifluoroctove|5ENA87IZHT|TFAA

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What are the physical properties of Trifluoroacetic anhydride?

Melting Point -65 °C
Boiling Point 40 °C
Density 1.511 g/cm³ (liquid)
Flash Point -26 °C
Appearance Clear, colorless liquid
Color Clear
Form Liquid
Water Solubility Hydrolysis
Vapor Pressure 6.28 psi ( 20 °C)
Refractive Index n 20/D 1.3(lit.)
Log P 0.79 at 25℃

How is Trifluoroacetic anhydride classified and handled safely? Learn More

Danger
GHS05· Corrosive GHS07· Irritant GHS08· Health Hazard

Hazard Statements

H314 Causes severe skin burns and eye damage
H318 Causes serious eye damage
H332 Harmful if inhaled
H412 Harmful to aquatic life with long lasting effects

Precautionary Statements

P203 Obtain, consult and follow expert instructions for use.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.

Which trade and regulatory codes apply to Trifluoroacetic anhydride?

HS Code 29159080
UN Number 3265
ADR Class 8
Packing Group I
Storage Class 8B - Non-combustible corrosive hazardous materials
WGK (Germany) 2
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