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"Clean Agent" Halon Alternatives

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Physical Properties Comparison Halotron I and Halon 1211

Property Halotron I Halon 1211
Chemical Formula (1) C2HCl2F3 (HCFC-123)
+ Prop. Gas Mixture
CF2C1Br
Ozone Depletion Potential (ODP) (CFC-11 = 1.0) 0.014 4
Global Warming Potential (GWP) (2) (100 year CO2 based ITH) 140 to 840
0.04 to 0.24 (CFC-1=1.0)
Non Calculated
Atmospheric Lifetime in Years (2) 3.5 to 11 12.5 > 25
Molecular Weight 150.7 165.4
Boiling Point (3) 80.6°F (27°C) 25°F (-4°C)
Liquid Density at 25 °C 92.3 lb/ft3 (1.48 kg/l) 111.6 lb/ft³
Vapor Pressure at 25 °C (4) 95 psi (6.55 bar) 38.7psi (2.67 bar)
Extinguishing Concentration:
n-heptane Cup Burner
6-7 % by vol. 3-5% by vol.
Acute Toxicity: Cardiotox LOAEL (5) (Lowest Observed Adverse Effect Level) 2% 1.0%
Acute Toxicity: Cardiotox NOAEL (5) (No Observed Adverse Effect Level) 1% 0.5%
Acute Toxicity: ALC, LC50 (4 hours) 3% 3.1 to 10%
  • Halotron I is a proprietary blend of HCFC-123 and two gases.
  • Calculated values from a range of environmental models.
  • At 1 atm., 70% liquid fill ratio.
  • In a typical storage container (the vapor pressure of the liquid alone is less).
  • Data from U.S. EPA.
 

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