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Malonaldehyde

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Synonyms & Trade Names
Malonic aldehyde, Malonodialdehyde, Propanedial, 1,3-Propanedial [Note: Pure Malonaldehyde is unstable and may be used as its sodium salt.]
CAS No.
542-78-9
RTECS No.
TX6475000
DOT ID & Guide
Formula
CHOCH₂CHO
Conversion
IDLH
Ca [N.D.]
See: IDLH INDEX
Exposure Limits
NIOSH REL
Ca See Appendix A See Appendix C (Aldehydes)
OSHA PEL
none
Measurement Methods
None available
See: NMAM or OSHA Methods
Physical Description
Solid (needles).
Molecular Weight
72.1
Boiling Point
?
Melting Point
161°F
Solubility
?
Vapor Pressure
?
Ionization Potential
?
Specific Gravity
?
Flash Point
?
Upper Explosive Limit
?
Lower Explosive Limit
?
Incompatibilities & Reactivities
Proteins [Note: Pure compound is stable under neutral conditions, but not under acidic conditions.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, respiratory system; central nervous system depression; [potential occupational carcinogen]
Target Organs
Eyes, skin, respiratory system, central nervous system
Cancer Site
[in animals: thyroid gland tumors]
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated/Daily
Remove:When wet or contaminated
Change:Daily
Provide:Eyewash, Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Water flush immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH

At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(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

See also
INTRODUCTION   ICSC CARD: 1632
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health