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Trifluoroacetaldehyde Ethyl Hemiacetal (contains ca. 10% Ethanol)
(CAS RN:433-27-2 Product Number:T0791)


Trifluoroacetaldehyde Ethyl Hemiacetal
Synonym 1-Ethoxy-2,2,2-trifluoroethanol (contains ca. 10% Ethanol)
Synonym Perfluoroacetaldehyde Ethyl Hemiacetal (contains ca. 10% Ethanol)

General Information

Product Number T0791

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Purity/Analysis Method >80.0%(GC)
Storage Temperature
M.F. / M.W. C4H7F3O2=144.09
CAS RN 433-27-2
Related CAS RN
MDL Number MFCD00000441
Packaging and Container
  • Product Details
  • Safety & Regulations


Purity(GC) min. 80.0 %
Refractive index n20/D 1.3400 to 1.3440

Data of Reference

flp 39°C(lit.)


Reaxys-RN 906797
PubChem SID 87576633


Signal Word Danger
Hazard Statements
  • H225
  • :Highly flammable liquid and vapor.
  • H302
  • :Harmful if swallowed.
  • H320
  • :Causes eye irritation.
  • H335+H336
  • :May cause respiratory irritation. May cause drowsiness or dizziness.
  • H340
  • :May cause genetic defects.
  • H360
  • :May damage fertility or the unborn child.
  • H372
  • :Causes damage to Liver through prolonged or repeated exposure.
  • H373
  • :May cause damage to Nervous System through prolonged or repeated exposure.
Precautionary Statements
  • P201
  • :Obtain special instructions before use.
  • P202
  • :Do not handle until all safety precautions have been read and understood.
  • P210
  • :Keep away from heat, sparks, open flames and hot surfaces. – No smoking.
  • P233
  • :Keep container tightly closed.
  • P240
  • :Ground and bond container and receiving equipment.
  • P241+P242+P243
  • :Use explosion-proof electrical, ventilating and lighting equipment. Use only non-sparking tools. Take precautionary measures against static discharge.
  • P260
  • :Do not breathe mist, vapors or spray.
  • P264
  • :Wash hands and face thoroughly after handling.
  • P270
  • :Do not eat, drink or smoke when using this product.
  • P271
  • :Use only outdoors or in a well-ventilated area.
  • P280
  • :Wear protective gloves, protective clothing, face protection.
  • P301+P312+P330
  • :If swallowed: Call a poison center or doctor if you feel unwell. Rinse mouth.
  • P303+P361+P353
  • :If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P304+P340+P312
  • :If inhaled: Remove person to fresh air and keep comfortable for breathing. Call a poison center or doctor if you feel unwell.
  • P305+P351+P338+P337+P313
  • :If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice or attention.
  • P308+P313
  • :If exposed or concerned: Get medical advice or attention.
  • P403+P233
  • :Store in a well-ventilated place. Keep container tightly closed.
  • P405
  • :Store locked up.
  • P501
  • :Dispose of contents and container in accordance with local, regional, national regulations (e.g. US: 40 CFR Part 261, EU:91/156/EEC, JP: Waste Disposal and Cleaning Act, etc.).

Transport Information

UN Number 1993
Class 3
Packing Group II


Rifluoroacetaldehyde Ethyl Hemiacetal: A Precursor of Trifluoromethyl Compounds

Trifluoroacetaldehyde ethyl hemiacetal is used for preparation of trifluoromethyl compounds such as β-hydroxy-β-trifluoromethyl ketones, α-trifluoromethyl alcohols and α-trifluoromethyl amines.1-3) It is also used for in situ generation of gaseous unstable trifluoroacetaldehyde (b.p. -18 ºC) in organic synthesis.4-6)


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