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| Environment HFC-365mfc |
HFC-365mfc (1,1,1,3,3-pentafluorobutane)
Ecological properties
Mobility
Air, Henry's law constant (H) ca : 3.8 kPa.m³/mol
Result: considerable volatility
Conditions: 20°C /calculated value
Soil/sediments, adsorption : log KOC ca. 1.8
Conditions: calculated value
Abiotic degradation
Air, indirect photo-oxidation : t ½ ca.7.04 year(s)
Air, photolysis, ODP : = 0
Result: no effect on stratospheric ozone
Reference value for CFC 11: ODP = 1
Air, greenhouse effect, GWP : = 890
Reference value for CO2 = 9.9 years
Biotic degradation
Aerobic, test : ready biodegradability/closed bottle, 13 %, 28 day(s)
Result: non-readily biodegradable
Potential for bioaccumulation
Bioconcentration : log P o/w ca. 1.61
Result: improbable bioaccumulation
Conditions: measured value
Comments : Product is persistent in air
(atmospheric lifetime: 1 at 100 years)
Hazard for the aquatic environment is limited due to
product properties:
· Considerable volatility
· Low bioaccumulation potential
Ecotoxicological properties
Acute ecotoxicity
Fishes, Brachidanio rerio, LC 50, 96 h >= 200 mg/l
Crustaceans, Daphnia magna, NOEC, 48 h > 200 mg/l
Algae, Selenastrum capricornutum, NOEC 72 h = 113 mg/l
Source: Safety Data Sheet of Solvay
IPCC, climate change 2001, third assessment report, Cambridge university press, 2001.
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