CCl2F2

ceramic

· JVASP-5185· CCl2F2

CCl2F2 (difluorodichloromethane, CFC-12) is a halogenated hydrocarbon compound historically classified and used as a refrigerant and aerosol propellant. While this material is now largely phased out under the Montreal Protocol due to ozone-depletion potential, it remains relevant in legacy equipment maintenance, historical documentation, and specialized low-temperature applications where alternatives are impractical or unavailable. Engineers encounter CCl2F2 primarily when servicing or decommissioning older air-conditioning, refrigeration, and foam-blowing systems, where understanding its properties is essential for safe handling and environmental compliance.

refrigeration systems (legacy)HVAC maintenance and recoveryaerosol propellants (discontinued)foam blowing agents (historical)cryogenic applicationsCFC phase-out compliance

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.07652	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	5.732	eV	DFT · OptB88vdW
↳	6.880	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	3.635	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	2.621	-	DFT · OptB88vdW
↳	2.208	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.1812	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000910	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000489	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-369.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	474.3	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.9394	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

CCl2F2 — Properties & Data | MatWorld

CCl2F2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental