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Methylene, chlorofluoro- (7CI, 8CI, 9CI) is a chemical compound that falls under the category of halogenated hydrocarbons. It is composed of a methylene group (CH2) bonded to a chlorine atom and a fluorine atom, resulting in the molecular formula CClF. Methylene,chlorofluoro- (7CI,8CI,9CI) is also known as chlorodifluoromethane or difluorochloromethane. It is a colorless, odorless, and non-toxic gas at room temperature, with a boiling point of -38.3°C. Methylene, chlorofluoro- is primarily used as a refrigerant, blowing agent, and propellant in various industrial applications. Due to its low global warming potential and ozone depletion potential, it is considered a more environmentally friendly alternative to other chlorofluorocarbons (CFCs). However, it is still a potent greenhouse gas and its use is regulated under international agreements to mitigate its impact on climate change.

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1691-88-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1691-88-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,9 and 1 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1691-88:
(6*1)+(5*6)+(4*9)+(3*1)+(2*8)+(1*8)=99
99 % 10 = 9
So 1691-88-9 is a valid CAS Registry Number.

1691-88-9Upstream product

1691-88-9Relevant academic research and scientific papers

Emission from FCO in the Reactions of Ozone with Fluoroethenes

Toby, Sidney,Toby, Frina S.

, p. 4071 - 4073 (2007/10/02)

The gas-phase reactions of ozone with cis-1,2-difluoroethene, trans-1,2-difluoroethene, trifluoroethene, and chlorotrifluoroethene are all accompanied by light with a maximum intensity at approximately 425 nm.A partial vibrational analysis of this emission is presented and it is concluded that the emitting species is the FCO radical, as previously suggested.A comparison is made between the enthalpy changes of the primary reactions between ozone and the fluoroethenes and their correlation with the identity of the emitting species.The exothermicity of the reaction correlates with the chemiluminescent reaction channel.

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