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11.7 Chemical permeation data
The NFPA 1991 approval data was derived from permeation tests performed by Intertek
Testing Services, USA, in accordance with ASTM F739 with modifications as specified in
NFPA 1991 to provide cumulative permeation data.
NFPA 1991 requires the primary suit materials not to exhibit cumulative permeation in
excess of 6.0 µg/cm
2
during 1 hour after the material is conditioned (flexed and abraded).
It should be noted that all chemical testing was performed on swatches of suit material
under laboratory conditions, not under actual workplace environments. The user must
determine the applicability of the results obtained under laboratory conditions to the
actual conditions of use. Information presented is subject to change without notice.
MATERIAL OR SEAM TESTED: GARMENT MATERIAL (AlphaTec
®
FLASH)
Cumulative Permeation (µg/cm
2
) over Test Period Interval
Test Period Interval
0-15 min
15-30 min
30-45 min
45-60 min
1-hour
total
Chemical/Requirement
< 2.0
< 2.0
< 2.0
< 2.0
< 6.0
Acetone
< 0.20
< 0.20
< 0.20
< 0.20
< 0.80
Acetonitrile
< 0.20
< 0.20
< 0.20
< 0.20
< 0.80
Acrolein
< 0.20
< 0.20
< 0.20
< 0.20
< 0.80
Acrylonitrile
< 0.20
< 0.20
< 0.20
< 0.20
< 0.80
Anhydrous ammonia (gas)
< 0.42
< 0.39
< 0.35
< 0.27
1.42
1,3-Butadiene (gas)
< 0.34
< 0.55
< 0.66
< 0.66
< 2.22
Carbon disulfide
< 0.20
< 0.20
< 0.20
< 0.20
< 0.80
Chlorine (gas)
< 0.20
< 0.20
< 0.20
< 0.20
< 0.80
Dichloromethane
< 0.22
< 0.23
< 0.24
< 0.25
< 0.93
Diethyl amine
< 0.20
< 0.20
< 0.20
< 0.20
< 0.80
Dimethyl formamide
< 0.20
< 0.20
< 0.20
< 0.20
< 0.80
Dimethyl sulfate
< 0.20
< 0.20
< 0.20
< 0.20
< 0.80
Ethyl acetate
< 0.20
< 0.20
< 0.20
< 0.20
< 0.80
Ethylene oxide (gas)
< 0.20
< 0.20
< 0.20
< 0.20
< 0.80
Hexane
< 0.20
< 0.20
< 0.20
< 0.20
< 0.80
Hydrogen chloride (gas)
< 0.20
< 0.21
< 0.22
< 0.33
< 0.96
Methanol
< 0.20
< 0.20
< 0.20
< 0.20
< 0.80