dichlorodifluoromethane

(redirected from Freon 12)
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Related to Freon 12: Freon 22

dichlorodifluoromethane

[dī¦klȯr·ō·dī¦flu̇r·ō′me‚th aman]
(organic chemistry)
CCl2F2 A nontoxic, nonflammable, colorless gas made from carbon tetrachloride; boiling point -30°C; used as a refrigerant and as a propellant in aerosols.
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In July, customs officials at the New Tokyo International Airport at Narita, Chiba Prefecture seized a cargo of Freon 12 gas that was shipped from Thailand as oil lubricant by a Nagoya-based used-car dealer.
Kitakyushu customs impounds 36,000 cans of Freon gas
The next morning the control was still at 100 percent for all the materials except Freon 11 (68 percent), Freon 12 (75 percent), and toluene (95 percent).
Sanitary landfill cover materials compared
The permeation data, given in Table 1, show a significant improvement in permeation loss for ETP 65 compared with two commercially used hose materials - thermoset rubber and plasticized nylon - for both the current automotive refrigerant, Freon 12, and an environmentally safe replacement candidate, Freon 134a.
New flexible thermoplastic alloys achieve high-level synergism

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