Methyl acrylate

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

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

Methyl acrylate

NIOSH REL

OSHA PEL

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