Methyl acetylene-propadiene mixture
|
CAS
59355-75-8
|
C3H4
|
RTECS
UK4920000
|
Synonyms & Trade Names
MAPP gas, Methyl acetylene-allene mixture, Methyl acetylene-propadiene mixture (stabilized), Propadiene-methyl acetylene, Propyne-allene mixture, Propyne-propadiene mixture
|
DOT ID & Guide
1060 / 116P (stabilized)
|
Exposure
Limits
|
NIOSH REL: TWA 1000 ppm (1800 mg/m3) ST 1250 ppm (2250 mg/m3)
|
|
OSHA PEL†: TWA 1000 ppm (1800 mg/m3)
|
IDLH
3400 ppm [10%LEL]
See: 59355758
|
Conversion
1 ppm = 1.64 mg/m3
|
Physical Description
Colorless gas with a strong, characteristic, foul odor. [Note: A fuel that is shipped as a liquefied compressed gas.]
|
MW: 40.1
|
BP: -36 to -4°F
|
FRZ: -213°F
|
Sol: Insoluble
|
VP: >1 atm
|
IP: ?
|
RGasD: 1.48
|
|
Fl.P: NA (Gas)
|
UEL: 10.8%
|
LEL: 3.4%
|
|
|
Flammable Gas
|
Incompatibilities & Reactivities
Strong oxidizers, copper alloys [Note: Forms explosive compounds at high pressure in contact with alloys containing more than 67% copper.]
|
Measurement Methods
NIOSH S85 (II-6); OSHA 7
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Frostbite
Eyes: Frostbite
Wash skin: No recommendation
Remove: When wet (flammable)
Change: No recommendation
Provide: Frostbite wash
|
First Aid (See procedures)
Eye: Frostbite
Skin: Frostbite
Breathing: Respiratory support
|
Respirator Recommendations
NIOSH/OSHA
Up to 3400 ppm:
(APF = 10) Any supplied-air respirator
(APF = 50) Any self-contained breathing apparatus with a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
|
Exposure Routes
inhalation, skin and/or eye contact (liquid)
|
Symptoms
Irritation respiratory system; excitement, confusion, anesthesia; liquid: frostbite
|
Target Organs
respiratory system, central nervous system
|
