Physical Properties Comparison Halotron I and Halon 1211

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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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