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Methyl acrylate

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Synonyms & Trade Names
Methoxycarbonylethylene, Methyl ester of acrylic acid, Methyl propenoate
CAS No.
96-33-3
RTECS No.
AT2800000
DOT ID & Guide
1919 129P(inhibited)
Formula
CH₂=CHCOOCH₃
Conversion
1 ppm = 3.52 mg/m3
IDLH
250 ppm
See: 96333
Exposure Limits
NIOSH REL
TWA 10 ppm (35 mg/m3) [skin]
OSHA PEL
TWA 10 ppm (35 mg/m3) [skin]
Measurement Methods
NIOSH 1459 , 2552;
OSHA 92
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with an acrid odor.
Molecular Weight
86.1
Boiling Point
176°F
Freezing Point
-106°F
Solubility
6%
Vapor Pressure
65 mmHg
Ionization Potential
9.90 eV
Specific Gravity
0.96
Flash Point
27°F
Upper Explosive Limit
25%
Lower Explosive Limit
2.8%
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities
Nitrates, oxidizers such as peroxides, strong alkalis [Note: Polymerizes easily; usually contains an inhibitor such as hydroquinone.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, upper respiratory system
Target Organs
Eyes, skin, respiratory system
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet (flammable)
Change:No recommendation
Provide:Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Water flush immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH/OSHA

Up to 100 ppm:
(APF = 10) Any supplied-air respirator*

Up to 250 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator 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

See also
INTRODUCTION   ICSC CARD: 0625
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health