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Penetration of Methyl Isocyanate Through Organic Vapor and Acid Gas Respirator Cartridges.

PB87103057

Publication Date	1986
Personal Author	Moyer, E. S.; Berardinelli, S. P.
Page Count	66
Abstract	Methyl isocyanate (MIC) is a very volatile liquid which is highly toxic (TLV 0.02 ppm) and possesses inadequate warning properties, because of high toxocity and lack of adequate warning properties, organic vapor (OV) cartridges are contra-indicated for use against MIC. Nevertheless, a study was undertaken to evaluate the MIC breakthrough of OV and acid gas cartridges in order to assess their effectiveness. Two different manufacturer's OV and acid gas cartridges were tested against MIC at three different relative humidities and at different concentrations of MIC in air. Breakthrough times were generally very short. Relative humidity had a large effect on the breakthrough characteristics. The test apparatus and results will be presented.
Keywords	Respirators Protective masks Performance Penetration Breathing apparatus Tables(Data) Vapors Concentration(Composition) Toxic substances Isocyanic acid/(methyl-ester)
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	95E - Life Support Systems
Corporate Authors	National Inst. for Occupational Safety and Health, Morgantown, WV. Div. of Safety Research.
Document Type	Technical Report
NTIS Issue Number	198701

Penetration of Methyl Isocyanate Through Organic Vapor and Acid Gas Respirator Cartridges.

Penetration of Methyl Isocyanate Through Organic Vapor and Acid Gas Respirator Cartridges.
PB87103057

Publication Date	1986
Personal Author	Moyer, E. S.; Berardinelli, S. P.
Page Count	66
Abstract	Methyl isocyanate (MIC) is a very volatile liquid which is highly toxic (TLV 0.02 ppm) and possesses inadequate warning properties, because of high toxocity and lack of adequate warning properties, organic vapor (OV) cartridges are contra-indicated for use against MIC. Nevertheless, a study was undertaken to evaluate the MIC breakthrough of OV and acid gas cartridges in order to assess their effectiveness. Two different manufacturer's OV and acid gas cartridges were tested against MIC at three different relative humidities and at different concentrations of MIC in air. Breakthrough times were generally very short. Relative humidity had a large effect on the breakthrough characteristics. The test apparatus and results will be presented.
Keywords	Respirators Protective masks Performance Penetration Breathing apparatus Tables(Data) Vapors Concentration(Composition) Toxic substances Isocyanic acid/(methyl-ester)
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	95E - Life Support Systems
Corporate Authors	National Inst. for Occupational Safety and Health, Morgantown, WV. Div. of Safety Research.
Document Type	Technical Report
NTIS Issue Number	198701