1-chloropropene

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Structural formula
Structural formula of 1-chloropropene
Structural formulas of the trans isomer (left) and the cis isomer (right)
General
Surname 1-chloropropene
other names
  • 1-chloroprop-1-en
  • 1-chloro-1-propene
  • Propenyl chloride
Molecular formula C 3 H 5 Cl
Brief description

colorless to yellowish liquid

External identifiers / databases
CAS number
  • 590-21-6 (unspecified)
  • 16136-84-8 ( cis )
  • 16136-85-9 ( trans )
EC number 209-675-8
ECHA InfoCard 100,008,797
PubChem 5284364
Wikidata Q61702553
properties
Molar mass 76.52 g mol −1
Physical state

liquid

density
  • 0.9347 g cm −3 ( cis )
  • 0.9349 g cm −3 ( trans )
Melting point
  • −134.8 ° C ( cis )
  • −99 ° C ( trans )
boiling point
  • 32.8 ° C ( cis )
  • 37.4 ° C ( trans )
Vapor pressure

675.8 hPa (25 ° C)

solubility
Refractive index
  • 1.4055 (20 ° C, cis )
  • 1.4054 (20 ° C, trans )
safety instructions
GHS labeling of hazardous substances
02 - Highly / extremely flammable 07 - Warning

danger

H and P phrases H: 225-302-315-319
P: 210-270-280-302 + 352-332 + 313-362 + 364-305 + 351 + 338-337 + 313-370 + 378
Toxicological data
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

1-chloropropene is a chemical compound from the group of chlorinated alkenes .

Isomerism

1-Chloropropene occurs in two isomeric forms of the cis form [synonym: ( Z ) form] and the trans form [synonym: ( E ) form]. If “1-chloropropene” is mentioned in the scientific literature or in this article without reference to the cis or trans form, an unspecified mixture of cis and trans forms is meant. Structural isomers of 1-chloropropene are 2-chloropropene and 3-chloropropene (= allyl chloride).

Extraction and presentation

1-chloropropene is formed when hydrogen chloride is added to propyne . With a yield of 33%, the compound can be prepared by hydrogenation of 1,3-dichloropropane in cyclohexane at 100 ° C and 30-40 atm with an aluminum - or rhodium catalyst are presented.

It is formed as the main product from 1,1-dichloropropane with ethanolic potassium hydroxide solution.

properties

1-chloropropene is a very volatile, easily flammable, colorless to yellowish liquid that is practically insoluble in water.

use

1-chloropropene can be used to make propyne .

safety instructions

1-chloropropene forms highly flammable vapor-air mixtures. The compound has a flash point of 0 ° C. The explosion range is between 4.5% by volume as the lower explosion limit (LEL) and 16% by volume as the upper explosion limit (UEL). The compound was characterized as carcinogenic in long-term animal experiments .

literature

Individual evidence

  1. a b c d e f g Entry on 1-chloropropene, cis, trans in the GESTIS substance database of the IFA , accessed on February 12, 2019(JavaScript required) .
  2. a b c d e f g h i j k David R. Lide: CRC Handbook of Chemistry and Physics, 84th Edition . CRC Press, 2003, pp. 122 ( limited preview in Google Book search).
  3. Entry on 1-Propenyl Chloride (cis- and trans- mixture) at TCI Europe, accessed on February 12, 2019.
  4. ^ Daniel Bellus, Manfred Braun, Tonia Freysoldt, Richard Göttlich, Jens Hartung, Monica Härtinger, Stefan Härtinger, Paul Margaretha, Wolf-Diethard Pfeiffer, Kathrin-Maria Roy, Karola Rück-Braun, Ernst Schaumann, Theodor Troll, Henri Ulrich: Science of Synthesis: Houben-Weyl Methods of Molecular Transformations Vol ... - Daniel Bellus, Manfred Braun, Tonia Freysoldt, Richard Göttlich, Jens Hartung, Monica Härtinger, Stefan Härtinger, Paul Margaretha, Wolf-Diethard Pfeiffer, Kathrin-Maria Roy, Karola Rück-Braun, Ernst Schaumann, Theodor Troll, Henri Ulrich . Georg Thieme Verlag, 2014, p. 117 ( limited preview in Google Book search).
  5. ^ Calvin L. Stevens, Carl R. Johnson, Don C. de Jongh, Norman A. Lebel, Norman L. Allinger, Michael P. Cava: Gnichtel, Horst: Organische Chemie. [Main volume] Walter de Gruyter, 1980, p. 641 ( limited preview in Google Book search).
  6. ^ Dietrich Henschler: Toxicology of organochlorine compounds . John Wiley & Sons, 2008, ISBN 3-527-62421-X , pp. 34 ( limited preview in Google Book search).