# Pentachlorocyclopropane

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Pentachlorocyclopropane Names IUPAC name 1,1,2,2,3-Pentachlorocyclopropane Identifiers CAS Number 6262-51-7 Y 3D model (JSmol) Interactive image ChemSpider 21214 EC Number 613-064-5 PubChem CID 22631 UNII V4TJ9AL9RF CompTox Dashboard (EPA) DTXSID6073366 InChI InChI=1S/C3HCl5/c4-1-2(5,6)3(1,7)8/h1H Key: IACJMSLMMMSESC-UHFFFAOYSA-N SMILES C1(C(C1(Cl)Cl)(Cl)Cl)Cl Properties Chemical formula C3HCl5 Molar mass 214.29 g·mol−1 Appearance Colourless liquid Odor Mild, minty[1] Density 1.668 g/cm3[2] Boiling point 56 °C / 7 mmHg[1] Refractive index (nD) 1.51[2] Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chemical compound

**Pentachlorocyclopropane** is a chlorinated [cyclopropane](/source/Cyclopropane) with the chemical formula C3HCl5. It is a colourless liquid with a faint minty odour.[1] It is thermally unstable above 100 °C; decomposition gives [1,1,3,3,3-pentachloropropene](https://en.wikipedia.org/w/index.php?title=1,1,3,3,3-pentachloropropene&action=edit&redlink=1) by [isomerisation](/source/Isomerisation).[3] Pentachlorocyclopropane can be obtained by the addition of [dichlorocarbene](/source/Dichlorocarbene) into [trichloroethylene](/source/Trichloroethylene) in presence of a base.[4] Pentachlorocyclopropane itself gives [tetrachlorocyclopropene](/source/Tetrachlorocyclopropene) when reacted with a base such as [potassium hydroxide](/source/Potassium_hydroxide) by means of [dehydrohalogenation](/source/Dehydrohalogenation).[5]

## References

1. ^ [***a***](#cite_ref-tobey_1-0) [***b***](#cite_ref-tobey_1-1) [***c***](#cite_ref-tobey_1-2) *Pentachlorocyclopropane* Stephen W. Tobey and Robert West The University of Wisconsin (1965)

1. ^ [***a***](#cite_ref-yaws_2-0) [***b***](#cite_ref-yaws_2-1) Yaws, C. L. (2015). The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals: Physical Properties for More Than 54,000 Organic and Inorganic Chemical Compounds, Coverage for C1 to C100 Organics and Ac to Zr Inorganics.

1. **[^](#cite_ref-3)** Organic Reaction Mechanisms 1966: An Annual Survey Covering the Literature Dated December 1965 Through November 1966. Page 228

1. **[^](#cite_ref-4)** Strain and Its Implications in Organic Chemistry: Organic Stress and Reactivity. (2012). Page 384

1. **[^](#cite_ref-5)** Advances in Alicyclic Chemistry. (2013). Elsevier Science. page 57

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