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iso-Butane
(iso-C4H10) |
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 A
flammable, colorless liquefied gas with a gasoline-like
odor. Shipped as a liquefied gas under its own vapor
pressure (31 psig @ 70°F).
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Molecular Weight:
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58.12
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Safety Data
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Vapor Pressure Data
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Specific Volume:
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6.47cf/lb@NTP
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Nontoxic-Simple Asphyxiant
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Temp (Deg. F)
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Pressure (psia)
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Boiling Point:
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11.0°F(-11.7°C)@1atm
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32
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22.9
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CAS No.:
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75-28-5
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70
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45.2
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Hazards:
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Flammability, Suffocation, Contact with liquid
can cause frostbite.
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Flammable Limits:
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1.8-8.4% in Air
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DOT Label:
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Red, Flammable Gas
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UN Number:
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UN 1969
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DOT Class:
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2.1
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Cylinder:
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Steel Alloy
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Cylinder
Size
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DOT
Specification
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Cylinder
Dimension
(in.)
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Average
Tare Weight
(lbs)
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Average
Internal Volume
(ft3)(L)
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Contents
(lbs)
|
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LP5
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4BA240
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12 x 18
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19
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0.765 (21.7)
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17
|
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LP239
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4BA240
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15 x 48
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75
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3.83 (108)
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116
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GRADE
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CP
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INSTRUMENT
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RESEARCH
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Critical Assay
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99.0%
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99.5%
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99.99%
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Methane
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-
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-
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< 5 ppm
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Ethane
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-
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-
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< 5 ppm
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Ethylene
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-
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-
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< 5 ppm
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Propane
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-
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-
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<20 ppm
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Propylene
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-
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-
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<20 ppm
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N-Butane
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-
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-
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<40 ppm
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Moisture
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-
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-
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< 5 ppm
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Valve Material
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Brass
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Brass
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Brass
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CGA Connection
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510
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510
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510
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Additional Information:
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Isobutane is a flammable, colorless liquefied
compressed gas packaged in cylinders under its
own vapor pressure of 45.2 psia at 70 °F.
It poses an immediate fire and explosion hazard
when mixed with air at concentrations exceeding
1.8%. High concentrations that can cause rapid
suffocation are above the lower flammable limit
and must not be entered. Isobutane is heavier
than air and may collect in low areas or travel
along the ground where there may be an ignition
source present. Direct contact with liquid can
cause frostbite.
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