Properties
- Melting point:
- -158°C
- Boiling point:
- -29.79°C
- Density
- 1.329
- vapor pressure
- 4,306 at 20 °C (McConnell et al., 1975)
- refractive index
- 1.2850
- Flash point:
- 11 °C
- storage temp.
- -20°C
- solubility
- Soluble in acetic acid, acetone, chloroform, ether (Weast, 1986), and ethanol (ITII, 1986)
- form
- buffered aqueous glycerol solution
- color
- Colorless gas with an ethereal odor
- Water Solubility
- Insoluble. 0.028 g/100 mL
- Henry's Law Constant
- 1.72, 2.63, and 3.91 at 10, 20, and 30 °C, respectively (Munz and Roberts, 1987)
- Exposure limits
- NIOSH REL: TWA 1,000 ppm (4,950 mg/m3), IDLH 15,000 ppm; OSHA PEL:
TWA 1,000 ppm; ACGIH TLV: TWA 1,000 ppm (adopted).
- Dielectric constant
- 2.4(21℃)
- Stability:
- Stable. Non-flammable. May react violently with aluminium.
- InChIKey
- PXBRQCKWGAHEHS-UHFFFAOYSA-N
- LogP
- 2.160
Safety Information
- Symbol(GHS)
![](https://img.chemicalbook.com/GHS02.jpg)
![](https://img.chemicalbook.com/GHS06.jpg)
![](https://img.chemicalbook.com/GHS08.jpg)
GHS02,GHS06,GHS08
- Signal word
- Danger
- Hazard statements
- H225-H301+H311+H331-H370-H420
- Precautionary statements
- P210-P260-P280-P301+P310-P311
- Hazard Codes
- Xn;N,Xi,N,Xn,T,F
- Risk Statements
- 20-59-23/25-11-39/23/24/25-23/24/25-22
- Safety Statements
- 23-24/25-59-61-45-24-16-7-36/37
- RIDADR
- 1028
- OEB
- A
- OEL
- TWA: 1000 ppm (4950 mg/m3)
- WGK Germany
- 1
- Hazard Note
- Irritant
- DOT Classification
- 2.2 (Nonflammable gas)
- HazardClass
- 2.2
- Toxicity
- LD50 for rats >1 g/kg (quoted, Verschueren, 1983).
- IDLA
- 15,000 ppm
Use
Dichlorodifluoromethane is used as an aerosol propellant in MDIs, either as the sole propellant or in combination with dichlorotetrafluoroethane, trichloromonofluoromethane, or mixtures of these chlorofluorocarbons. Dichlorodifluoromethane may also be used as a propellant in an aerosolized sterile talc used for intrapleural administration and is also used alone in some MDIs containing a steroid.