Ketene
|
CAS
463-51-4
|
CH2=CO
|
RTECS
OA7700000
|
Synonyms & Trade Names
Carbomethene, Ethenone, Keto-ethylene
|
DOT ID & Guide
|
Exposure
Limits
|
NIOSH REL: TWA 0.5 ppm (0.9 mg/m3) ST 1.5 ppm (3 mg/m3)
|
|
OSHA PEL†: TWA 0.5 ppm (0.9 mg/m3)
|
IDLH
5 ppm
See: 463514
|
Conversion
1 ppm = 1.72 mg/m3
|
Physical Description
Colorless gas with a penetrating odor.
|
MW: 42.0
|
BP: -69°F
|
FRZ: -238°F
|
Sol: Reacts
|
VP: >1 atm
|
IP: 9.61 eV
|
RGasD: 1.45
|
|
Fl.P: NA (Gas)
|
UEL: ?
|
LEL: ?
|
|
|
Flammable Gas
|
Incompatibilities & Reactivities
Water, alcohols, ammonia [Note: Readily polymerizes. Reacts with water to form acetic acid.]
|
Measurement Methods
NIOSH S92 (II-2)
See: NMAM or OSHA Methods
|
Personal Protection & Sanitation (See protection codes)
Skin: No recommendation
Eyes: No recommendation
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation
|
First Aid (See procedures)
Breathing: Respiratory support
|
Respirator Recommendations
NIOSH/OSHA
Up to 5 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 organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
|
Exposure Routes
inhalation, skin and/or eye contact
|
Symptoms
Irritation eyes, skin, nose, throat, respiratory system; pulmonary edema
|
Target Organs
Eyes, skin, respiratory system
|
|
See also: INTRODUCTION
See ICSC CARD: 0812 See MEDICAL TESTS: 0126
|
