LN-241117
Dichloromonofluoromethane , 99.0% Min , 75-43-4
CAS NO.：75-43-4
Empirical Formula: CHCl2F
Molecular Weight: 102.92
MDL number: MFCD00000825
EINECS: 200-869-8
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | -135°C |
| Boiling point: | 8.9°C |
| Density | 1,354 g/cm3 |
| vapor pressure | 1,216 at 11.8 °C (NIOSH, 1997) |
| refractive index | 1.3540 |
| solubility | Soluble in acetic acid, alcohol, and ether (Weast, 1986) |
| form | Colorless gas |
| color | Colorless liquid or gas with an ether-like odor |
| Water Solubility | 0.7 wt % at 30 °C (NIOSH, 1997) |
| Exposure limits | NIOSH REL: TWA 10 ppm (40 mg/m3), IDLH 5,000 ppm; OSHA PEL: TWA
1,000 ppm (4,200 mg/m3); ACGIH TLV: TWA 10 ppm (adopted). |
| Dielectric constant | 5.3（28℃） |
| NIST Chemistry Reference | Methane, dichlorofluoro-(75-43-4) |
| EPA Substance Registry System | HCFC-21 (75-43-4) |
Description and Uses
Dichlorofluoro-methane is a heavy, colorlessgas or liquid (below 9℃) with a slight ether-like odor.Molecular weight=102.92; Boiling point=9℃; Freezing/Melting point=2135℃; Relative vapor density (air-5 1)=3.57; Vapor pressure=1.6 atm at 25℃;Autoignition temperature=522℃. Hazard Identification(based on NFPA-704 M Rating System): Health 1,Flammability 0, Reactivity 0. Poor solubility in water;solubility=0.7% at 30℃.
Refrigerant gas; propellant gas
Safety
| Symbol(GHS) |  GHS04 |
| Signal word | Danger |
| Hazard statements | H280 |
| Precautionary statements | P410+P403 |
| Hazard Codes | N |
| Risk Statements | 59 |
| Safety Statements | 59 |
| RIDADR | 1029 |
| OEB | A |
| OEL | TWA: 10 ppm (40 mg/m3) |
| RTECS | PA8400000 |
| HazardClass | 2.2 |
| Hazardous Substances Data | 75-43-4(Hazardous Substances Data) |
| Toxicity | LC50 (inhalation) for rats 49,900 ppm/4-h (quoted, RTECS, 1985). |
| IDLA | 5,000 ppm |
