Chlorofluoromethane: Difference between revisions

{{Use dmy dates|date=February 2021}}

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| verifiedrevid = 460032038

| ImageFileL1 = Chlorofluoromethane.png

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| ImageFileR1 = Chlorofluoromethane-3D-vdW.png

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| PIN = Chloro(fluoro)methane <!-- Parentheses are used according to Subsection P-16.5.1.3 of Nomenclature of Organic Chemistry – IUPAC Recommendations and Preferred Names 2013 (Blue Book) -->

| OtherNames = Chlorofluoromethane<br />Fluorochloromethane<br />Chloro-fluoro-methane<br />Methylene chloride fluoride<br />Monochloromonofluoromethane<br />CFM<br />Khladon 31<br />Freon 31<br />HCFC 31<br />R 31

|Section1={{Chembox Identifiers

| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}

| CASNo_Ref = {{cascite|changed|??}}

| CASNo = 593-70-4

| EINECS = 209-803-2

| PubChem = 11643

| UNII_Ref = {{fdacite|correct|FDA}}

| SMILES = C(F)Cl

| KEGG = C19362

| InChI = 1/CH2ClF/c2-1-3/h1H2

|Section2={{Chembox Properties

| Formula = CH₂ClF

| MolarMass = 68.48 g/mol

| Appearance = Gas

| Density = 1.271 kg/m³ at 20&nbsp;°C

| MeltingPtC = -133.0

| BoilingPtC = -9.1

| Solubility =

| HenryConstant = 0.15 mol.kg⁻¹.bar⁻¹

|Section3={{Chembox Hazards

| MainHazards = [[Carcinogen|Carc. Cat. 3]]

| FlashPt =

| AutoignitionPt =

'''Chlorofluoromethane''' or '''Freon 31''' is the [[hydrochlorofluorocarbon]] (HCFC) with the formula CH₂ClF. It is a colorless, odorless, flammable gas.<ref name=Ullmann/> It is a class II ozone depleting substance and in accordance with the montreal protocol, its production and import were banned on 1 January 2015.<ref>{{Cite web |last=US EPA |first=OAR |date=2015-07-22 |title=Phaseout of Class II Ozone-Depleting Substances |url=https://www.epa.gov/ods-phaseout/phaseout-class-ii-ozone-depleting-substances |access-date=2024-08-29 |website=www.epa.gov |language=en}}</ref>

==Uses==

Pyrolysis of a mixture of [[dichlorofluoromethane]] and chlorofluoromethane gives [[hexafluorobenzene]]:<ref name=Ullmann>{{Ullmann | last1= Dagani|first1=M. J. | last2= Barda|first2=H. J. | last3 = Benya|first3=T. J. | last4= Sanders|first4=D. C. | title = Bromine Compounds | doi = 10.1002/14356007.a04_405 }}</ref>

:3 CHCl₂F + 3 CH₂ClF → C₆F₆ + 9 HCl

It was used as a [[refrigerant]] and has an [[ozone depletion potential]] of 0.02.

==Additional data==

Its crystal structure is [[monoclinic]] with [[space group]] P2₁ and [[lattice constant]]s ''a'' = 6.7676, ''b'' = 4.1477, ''c'' = 5.0206 (0.10⁻¹ nm), β = 108.205°.<ref>

|author1=Binbrek O. S. |author2=Torrie B. H. |author3=Swainson I. P. | year = 2002

|s2cid=6646254 }}</ref>

At an altitude of 22&nbsp;km, traces of chlorofluoromethane occur (148 ppt).<ref>

| author = C. Lippens

| journal=[[Journal of Optics (IOP Publishing)|Journal of Optics]]

| bibcode = 1981JOpt...12..331L

| display-authors=etal}}</ref>

* [https://web.archive.org/web/20080920112852/http://nvl.nist.gov/pub/nistpubs/jres/045/3/V45.N03.A03.pdf Infrared Spectrum of Chlorofluoromethane]

[[Category:Ozone-depleting chemical substances]]