80337-25-3

Basic information

• Product Name: 3,3,4,4,5,5,5-HEPTAFLUOROPENTYNE
• Synonyms: 3,3,4,4,5,5,5-Heptafluoropent-1-yne 97%;3,3,4,4,5,5,5-Heptafluoropent-1-yne97%;1H-Perfluoropent-1-yne 97%;1H-Heptafluoropent-1-yne 97%;3,3,4,4,5,5,5-HEPTAFLUORO-1-PENTYNE;3,3,4,4,5,5,5-HEPTAFLUOROPENT-1-YNE;3,3,4,4,5,5,5-HEPTAFLUOROPENTYNE
• CAS NO: 80337-25-3
• Molecular Formula: C5HF7
• Molecular Weight: 194.05
• Mol File: 80337-25-3.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 18-20°C 710mm
• Appearance: /
• Density: 1.457 g/cm³
• CAS DataBase Reference: 3,3,4,4,5,5,5-HEPTAFLUOROPENTYNE(CAS DataBase Reference)
• NIST Chemistry Reference: 3,3,4,4,5,5,5-HEPTAFLUOROPENTYNE(80337-25-3)
• EPA Substance Registry System: 3,3,4,4,5,5,5-HEPTAFLUOROPENTYNE(80337-25-3)

Safety Data

• Hazard Codes: F
• Statements: 10
• Safety Statements: 16
• RIDADR: 1993
• Hazardous Substances Data: 80337-25-3(Hazardous Substances Data)

Usage

General Description

3,3,4,4,5,5,5-Heptafluoropentyne is a chemical compound with the molecular formula C5F7. It is a highly fluorinated compound that consists of a linear chain of five carbon atoms, each of which is attached to a fluorine atom. 3,3,4,4,5,5,5-Heptafluoropentyne is a volatile and potentially hazardous chemical that is primarily used in research and development as a solvent, refrigerant, and as a building block for the synthesis of other fluorinated compounds. It is also used in the production of specialty polymers and as a building block for other fluorinated compounds. Due to its highly reactive nature, it requires careful handling and storage to prevent accidents and exposure.

Upstream product

• 355-08-8 3,3,4,4,5,5,5-heptafluoropent-1-ene 
• 869583-58-4 potassium (heptafluoropentynyl)trifluoroborate 
• 81291-44-3 1,1,2-trichloro-3,3,4,4,5,5,5-heptafluoro-1-pentene 
• 376-97-6 3,3,4,4,5,5,5-heptafluoro-1-iodopentene 

Relevant articles and documents

CONDENSATION OF TRICHLOROTRIFLUOROPROPYLENE AND DICHLOROPERLUOROISOBUTYLENE WITH FLUORINATED ETHYLENES IN THE PRESENCE OF SbF5

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Reactions of fluoroalk-1-en-1-yltrifluoroborate and perfluoroalk-1-yn-1- yltrifluoroborate salts and selected hydrocarbon analogues with hydrogen fluoride and with halogenating agents in aHF and in basic solvents

The relative rate of the electrophilic hydrodeboration of K[R′BF 3] with HF (27-100%) diminishes in the series R′ = C 4H9CC > C4F9CFCFCC > CF 2C(CF3) > C3F7CC ～ (CF 3)2CFCC > CF3CC. When R′ = CF 3CC the new salt K[CF3CH2-CF2BF 3] was obtained by addition of HF besides CF3CCH and K[BF4]. Small amounts of water caused the formation of K[CF 3CH2-C(O)BF3] as a by-product. The electrophilic halofluorination of perfluoroalkenyltrifluoroborate salts with NCS or NBS in aHF (anhydrous HF) led to K[RFCFHal-CF2BF 3] (from K[RFCFCFBF3]) and K[R FCHal2-CF2BF3] (from K[R FCHalCFBF3] and K[RFCCBF3]) (Hal = Cl, Br). Treatment of K[RFCFCFBF3] and K[R FCCBF3] with 5% F2/N2 in MeCN gave the corresponding salts K[RFCF2-CF2BF 3] in 16-25% isolated yield. Reactions of K[trans-C4F 9CFCFBF3] with Cl2 in MeOH resulted in K[C 4F9CFCl-C(O)BF3] (major product). The latter was also obtained in reactions of K[trans-C4F9CFCFBF 3] with Cl2 in MeCN or sulfolane after sequential methanolysis of the primarily formed products. In contrast, the salts K[RCFCFBF3] (R = CnF2n+1, trans-C 4H9) and K[CF3CCBF3] underwent bromodeboration to RCFCFBr and CF3CCBr, respectively, when they were reacted with bromine in the polar solvents MeOH, MeCN, or sulfolane.