Propylene flammability limits

Propylene Glycol — Fire Hazards Flash Point (deg. F) 210 CC, 225 OC Flammable Limits in Air (%) 2.6 - 12.5 Fire Extinguishing Agents Water fog, alcohol foam, carbon dioxide, or dry... 

Vanta et al (Ref 2) determined the detonation limits of propylene oxide/air mixts to be 2.7 to 14.4 volume %, or much narrower than the flammability limits of ethylene oxide/air (see Table 3). They also measured the lower detonation limit for n-propyl nitrate/air and found it to be 2.2 volume %... 

Propylene is a colorless gas under normal conditions, has anesthetic properties at high concentrations, and can cause asphyxiation. It does not irritate the eyes and its odor is characteristic of olefins. Propjiene is a flammable gas under normal atmospheric conditions. Vapor-cloud formation from Hquid or vapor leaks is the main ha2ard that can lead to explosion. The autoignition temperature is 731 K in air and 696 K in oxygen (80). Evaporation of Hquid propylene can cause skin bums. Propylene also reacts vigorously with oxidising materials. Under unusual conditions, eg, 96.8 MPa (995 atm) and 600 K, it explodes. It reacts violentiy with NO2, N2O4, and N2O (81). Explosions have been reported when Hquid propylene contacts water at 315—348 K (82). Table 8 shows the ratio TJTp where is the initial water temperature, and T is the superheat limit temperature of the hydrocarbon. 

PETROLEUM GAS, LIQUIFIED, COMPRESSED (68476-85-7) Highly flammable gas a mixture ofpropane, butane, isobutane, propylene, butylenes, and other flammable hydrocarbon gases of low molecular weight refined from petroleum [explosion limits in air (vol %) 2.2 to 9.5... 

PHENYLPROPYLENE or 2-PHENYL-PROPYLENE or -PHENYL-PROPYLENE (98-83-9) C,H, Flammable liquid. Forms explosive mixture with air [explosion limits in air (vol %) 0.9 to 6.1 flash point 129°F/54°C autoignition tenp 1066°F/574°C Fire Rating 2]. Easily polymerizable. Unless inhibited, forms unstable peroxides. Reacts with heat and/or lack of appropriate inhibitor concentration. Reacts with catalysts for vinyl or ionic polymerization, such as alumimun, iron chloride or 2,5-dimethyl-2,5-di(/er/-butylperoxy)hexane. Violent reaction with strong oxidizers, butyl lithiiun, oleiun, xenon tetrafluoride. Incompatible with acids. The uninhibited monomer vapor may block vents and confined spaces by, forming a solid polymer material. Attacks aluminum and copper. On small fires, use dry chemical powder (such as Piuple-K-Powder), foam, or CO2 extinguishers. 

PROPYLENE TRIMER (27214-95-8) C9H1J Flammable liquid. Forms explosive mixture with air [explosion limits in air (vol %) 0.7 to 3.9 flash point 78°F/26°C Fire Rating 3]. May polymerize under certain conditions. Violent reaction with strong oxidizers, strong acids, bromine, perchlorates, perchromates, pyridinium perchlorate, peroxyacetic acid, peroxybenzoic acid, polymerization initiators. Contact with strong reducing... 

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