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Refrigerant-141b (dichlorofluoroethane CFCl2CH3)
Dichlorofluoroethane (HCFC- R-141b) is a nontoxic and colorless chemical with small ODP value and excellent chemical stability. Since its physical and chemical properties are similar to those of CFC-11 and CFC-113, it can substitute refrigerant R-11 as foaming agent for rigid or soft PU foam without changing process and equipment, or CFC-113 as metal cleaner and solder- remover as well. refrigerant R-141b has following characteristics:
1. Chemical Stability: It can be stored at room temperature without decomposition.
2. Dissolvability: It can dissolve in most organic solvents, alcohol and ether. It has excellent compatibility with grease and lubricant, and no obvious effects on most polymers including plastics and rubbers.
3. Toxicity: The toxicity trials conducted by Allied Signal and Atochem indicate that it has no irritant effect on hum an skin and eyes, but inhalation of high-concentrated refrigerant R-141b will cause anaesthetic effect.
4. Flammability: HCFC-141b is inflammable, it should be stored in ventilated place without flame.
Typical Properties of HCFC-141b:
Formula: CH3 CFCl2
Boiling Point (101.3KPa, ◦C): 32.1
Melting Point (◦C) :-103.5
Critical Temperature(◦C):210.2
Critical Pressure (KPa): 4640.2
Density (kg/m 3 ):1221
Ignition Limits(air%):7.6-17.7
Flash Point:-
Specification:
| Appearance | Colorless and Transparent |
| Odor | Odorless |
| Purity (≥%) | 99.8 |
| Moisture (≤%) | 0.002 |
| Acidity (≤%,HCl) | 0.0001 |
| Residue (≤%) | 0.001 |