Product show
HFC-152a (Difluoroethane)
Identification
Synonyms: 1,1-Difluoroethane (IUPAC); Ethylidene Difluoride; Freon 152a; R-152a; Fluorocarbon 152a; HFC152a
CAS No.: 75-37-6 EC No.: 200-866-1 RTECS No.: KI1410000
Molecular Weight: 66.05
Molecular Formula: C2H4F2
Structural Formula: 
m.p.: -117°C
b.p. (1 atm): -24.7°C
Vapor Pressure: 0.599Mpa
Critical T.: 113.5°C
Critical P.: 45.0 mPa
Critical Density: 0.365g/cm3
ODP: 0
GWP: 120 (CO2=1)
Chemical and Physical properties: HFC-152 is a colorless, odorless compressed gas, stable under normal condition
(Note: 1,2-difluoroethane: HFC-152)
Preparation
HFC-152a can be made by the following reaction under mercury-based catalyst: HC≡CH + 2HF → CH3CHF2
Application
1) HFC-152a is used as electronic cleaning solvent
2) Used as consumer aerosol propellant, especially those subject to stringent VOC requirements, alternative for CFC-12, and gas duster (canned air)
3) Used as a component of azeotopic blend refrigerant such as R-401a (with 13% HFC-152a), R-401b (with 11% HFC-152a), R-401C (with 15% HFC-152a) and R-411a (with 11% HFC-152a) and R-411b (with 3% HFC-152a)
Specification*
| Items | Specification | ||
|---|---|---|---|
| First grade | Second grade | Third grade | |
| HFC-152a purity, % | 99.9 min. | 99.8 min. | 99.5 min. |
| moisture, mg/kg | 10 max. | 10 max. | 20 max. |
| acidity, ppm | 0.1 max. | 0.1 max. | 1.0 max. |
| nonvolatile residues, mg/kg | 100 max. | 100 max. | 100 max. |
| noncondensable gas in vapor phase, % | 1.5 | 1.5 | 1.5 |
Standard Packaging
740kgs/cylinder, 9.62mt/20' FCL
Filling ratio 0.79
Risks and Safety Information
HFC-152a is regulated by UN as Flammable Gas
UN1030
Class 2.1
PG: unknown
R-Phrase: R12
S-Phrase: S7, S16, S33, S43
For more information, please see MSDS