Trifluoroacetic anhydride TFAA is the acid anhydride of trifluoroacetic acid. It is the perfluorinated derivative of acetic anhydride. Trifluoroacetic anhydride was originally prepared by the dehydration of trifluoroacetic acid with phosphorus pentoxide. For example, with dichloroacetyl chloride : . Trifluoroacetic anhydride has various uses in organic synthesis. It may be used to introduce the corresponding trifluoroacetyl group, for which it is more convenient than the corresponding acyl chloridetrifluoroacetyl chloridewhich is a gas.
It can be used to promote reactions of carboxylic acids, including nucleophilic acyl substitutionFriedel-Crafts acylationand acylation of other unsaturated compounds.2019 duramax problems
Other electrophilic aromatic substitution reactions can also be promoted with trifluoroacetic anhydride, including nitration, sulfonation and nitrosylation. Similar to acetic anhydridetrifluoroacetic anhydride can be used as a dehydrating agent and as an activator for the Pummerer rearrangement. With sodium iodideit reduces sulfoxides to sulfides.
Trifluoroacetic anhydride is the recommended desiccant for trifluoroacetic acid.
From Wikipedia, the free encyclopedia. CAS Number. Interactive image. PubChem CID. Chemical formula. Solubility in water. GHS hazard statements. GHS precautionary statements. Retrieved on Encyclopedia of Reagents for Organic Synthesis.Cisco vc device default password
New Reagent for Oxidation of Alcohols to Carbonyls". Purification of laboratory chemicals Google Books excerpt. Oxford: Butterworth-Heinemann. Categories : Carboxylic anhydrides Trifluoromethyl compounds. Namespaces Article Talk. Views Read Edit View history.Don't have a profile?
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Department of Transportation hazard labels, and a general description of the chemical. A colorless fuming liquid with a pungent odor. Soluble in water and denser than water. Corrosive to skin, eyes and mucous membranes.
Used to make other chemicals and as a solvent. The Hazard fields include special hazard alerts air and water reactions, fire hazards, health hazards, a reactivity profile, and details about reactive groups assignments and potentially incompatible absorbents.
Some are oxidizers and may ignite combustibles wood, paper, oil, clothing, etc. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. ERG, Contact with molten substance may cause severe burns to skin and eyes.
Avoid any skin contact. Effects of contact or inhalation may be delayed. Explosions have occurred, if the excess peroxide is not catalytically destroyed, prior to removal of solvent, [Tetrahedron Lett. The reduction of amides of trifluoroacetic acid with lithium aluminum hydride are dangerous at all phases of the process, explosions have occurred, [Chem. News,33, ]. The Response Recommendation fields include isolation and evacuation distances, as well as recommendations for firefighting, non-fire response, protective clothing, and first aid.
Move containers from fire area if you can do it without risk. Dike fire-control water for later disposal; do not scatter the material. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out.
Trifluoroacetic acid (Sequanal Grade)
Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk.Trifluoroacetic acid Sequanal Grade. ID: CSP CAS: Suppliers - Quick View.
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Chemical ID Identifying information, including synonyms, ID numbers, use type, chemical classification, a link to a list of all products containing this chemical and a list of the top crops this pesticide is used on in California. Poisoning Symptoms Signs and symptoms of poisoning, first aid, and links to treatment information for this chemical. Toxicity Link to information on toxicity to humans, including carcinogenicity, reproductive and developmental toxicity, neurotoxicity, and acute toxicity.
Regulatory Links to world-wide registration status as well as regulatory information for the U. Water Water quality standards and physical properties affecting water contamination potential. Ecotoxicity Toxicity to aquatic organisms. Related Chems List of chemicals in the same family, including breakdown products, salts, esters, isomers, and other derivatives. There may be other diseases and chemicals that have similar symptoms.
If you have a poisoning emergency in the United States call If the victim has collapsed or is unconscious, call No symptoms for this chemical or chemical group are available. See related chemicals for possible additional information. Sorry, no water quality standards or criteria have been established for this chemical by the U. Information for many chemicals is incomplete and may not be fully representative of effects on the environment.
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Prices and delivery dates may fluctuate. Trifluoroacetic Acid, Reagent is a colorless liquid that has a sharp smell and is an organofluorine compound. It is an acid that is roughly 34, times stronger than acetic acid. As a reagent it is used in organic synthesis as the prec. Trifluoroacetic Acid, Biochemical Grade is a colorless liquid that has a sharp smell and is an organofluorine compound. It is an acid that is roughly 34, times stronger than acetic acid and is a synthetic organic reagent for removal t.
Thermo Scientific Pierce Trifluoroacetic Acid TFA is manufactured and tested to meet strict specifications that ensure superior performance for use as an ion-pairing agent in reverse-phase peptide separations. For complex peptide s. Trifluoroacetic Acid-d, Spectrum offers a broad range of high quality deuterated products for all your routine synthesis and structural a. Trifluoroacetic Acid Sodium Salt is the sodium salt of trifluoroacetic acid. It is a general use laboratory reagent that is used in when a certified graded quality is not required or available.
Ungraded products supplied by Spectrum are. L-Leucine Hydroxamate -- Trifluoroacetic acid Complex is a branched-chain alpha-amino acid and classified as a flavor enhancer and food additive.Botellon de barro
Ungraded products supplied by Spectrum are indicative of a grade suitable for general indus. Trifluoroacetic Acid is a colorless liquid that has a sharp smell and is an organofluorine compound. It is an acid that is roughly 34, times stronger than acetic acid and is a synthetic organic reagent for removal the t-butoxycarbonyl. Trifluoroacetic Acid, Sequenation Reagent is a colorless liquid that has a sharp smell and is an organofluorine compound.
It is an acid that is roughly 34, times stronger than acetic acid and is a synthetic organic reagent for removal. You have no items in your cart. My Favorites List My Quotes.Don't have a profile?
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To place an order, contact Fisher Scientific Customer Service. Emergency Overview Causes severe burns by all exposure routes. Inhalation may cause central nervous system effects. Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. Use personal protective equipment. Use only under a chemical fume hood. Wash off immediately with plenty of water for at least 15 minutes. Immediate medical attention is required. Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes.
Move to fresh air. If breathing is difficult, give oxygen.
Trifluoroacetic acid ethyl ester (TFAEt)
Do not use mouth-to-mouth resuscitation if victim ingested or inhaled the substance; induce artifici. Precast Electrophoresis Gels. View All Antibodies. Antibodies Advanced Search. Biochemicals and Reagents. Biological Buffers.
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