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CAS Number: 7572-29-4
Sum Formula: C2Cl2
Molar Mass: 94.93 g/mol
German Synonyms: Dichlorethin | Dichloracetylen
English Synonyms: Dichloroacetylene | Dichloroethyne
Structural Formula Dichloroethyne

Disclaimer: The CLP/GHS classification is not regularly updated in Chemsafe. For up-to-date information, please use the ECHA database. ( https://echa.europa.eu/en/information-on-chemicals )

GHS Hazard and Category:
  • Unst. Expl.: unstable, explosive
  • Carc. 2: carcinogenicity, category 2
  • STOT RE 2: specific target organ toxicity following repeated exposure, category 2
GHS Pictogram:
pictogram explosive
pictogram health hazard





GHS Signal Word: Warning
GHS Hazard Statement:
  • H200: Unstable explosives.
  • H351: Suspected of causing cancer .
  • H373: May cause damage to organs through prolonged or repeated exposure .

Boiling point
1 1991 Physikalisch-Technische Bundesanstalt (PTB) 1013.25 hPa 32 °C UTI: 4801-3491-38447/0-39
UTI: 4801-3491-38447/0-39;
Line no Boiling temperature Pressure
  • defined value
  • at atmospheric pressure
  • saturated
  • property of pure substance
  • saturated
1 32 °C [1] 1013.25 hPa
[1] explosion
Bibliographic data
Author Physikalisch-Technische Bundesanstalt (PTB)
Year 1991
Title Empfohlene Sicherheitstechnische Kenngrößen
Database PTB
Publisher Datenbank PTB-AG 3.41/3.71
Language GERM
Density
1 1991 Physikalisch-Technische Bundesanstalt (PTB) 1013.25 hPa 20 °C 1.26 g/cm3 UTI: 4801-3491-38448/0-39
UTI: 4801-3491-38448/0-39;
Line no Density Temperature Pressure
  • defined value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • property of pure substance
1 1.26 g/cm3 20 °C 1013.25 hPa
Bibliographic data
Author Physikalisch-Technische Bundesanstalt (PTB)
Year 1991
Title Empfohlene Sicherheitstechnische Kenngrößen
Database PTB
Publisher Datenbank PTB-AG 3.41/3.71
Language GERM
Melting point
1 1991 Physikalisch-Technische Bundesanstalt (PTB) -64 °C UTI: 4801-3491-38446/0-39
UTI: 4801-3491-38446/0-39;
Line no Melting temperature
  • defined value
  • experimental
  • at atmospheric pressure
  • property of pure substance
1 -64 °C
Bibliographic data
Author Physikalisch-Technische Bundesanstalt (PTB)
Year 1991
Title Empfohlene Sicherheitstechnische Kenngrößen
Database PTB
Publisher Datenbank PTB-AG 3.41/3.71
Language GERM
  • The oxidizing agent is air with an oxygen content of 20.95 % by volume. In the data base it is usually not specified as mixture component. Exceptions are highlighted.
  • Pressure values are absolute, not gauge pressures.
  • Impurities can strongly influence characteristic safety data, particulary if the properties of the impurity considerably deviate from the respective properties of the pure substance.
  • Safety characteristics are only displayed if evaluated data are available.
  • Values can be cited by using the UTI number of the table (Uniform Table Identifier).
  • Color Codes:         recommended value             no recommendation               do not use value

Flash point
1 1991 Physikalisch-Technische Bundesanstalt (PTB) UTI: 4801-3491-38449/0-39
UTI: 4801-3491-38449/0-39;
Line no Flash point
  • recommended value
  • experimental
  • closed cup
  • property of pure substance
1 -- [1]
[1] explodes when heated
Bibliographic data
Author Physikalisch-Technische Bundesanstalt (PTB)
Year 1991
Title Empfohlene Sicherheitstechnische Kenngrößen
Database PTB
Publisher Datenbank PTB-AG 3.41/3.71
Language GERM
Stoichiometric fraction of combustible substance in mixture with air
1 2005 Physikalisch-Technische Bundesanstalt (PTB) 12.2 Mol% UTI: 220-3491-38444/0-39
UTI: 220-3491-38444/0-39;
Line no Stoichiometric fraction of combustible substance in mixture with air
  • recommended value
  • property of pure substance
1 12.2 Mol%
Bibliographic data
Author Physikalisch-Technische Bundesanstalt (PTB)
Year 2005
Title Berechnete molare stöchiometrische Brenngasanteile in Luft (c_stoech)
Database PTB
Publisher Datenbank PTB-Lab. 3.43
Language GERM

No entry in database