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Methyl alcohol

Synonyms & Trade Names
Carbinol, Columbian spirits, Methanol, Pyroligneous spirit, Wood alcohol, Wood naphtha, Wood spirit
CAS No.
67-56-1
RTECS No.
PC1400000
DOT ID & Guide
1230 131
Formula
CH3OH
Conversion
1 ppm = 1.31 mg/m3
IDLH
6000 ppm
See: 67561
Exposure Limits
NIOSH REL
: TWA 200 ppm (260 mg/m3) ST 250 ppm (325 mg/m3) [skin]
OSHA PEL
†: TWA 200 ppm (260 mg/m3)
Measurement Methods

NIOSH 2000 , 3800;
OSHA 91
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with a characteristic pungent odor.
MW:
32.1
BP:
147°F
FRZ:
-144°F
Sol:
Miscible
VP:
96 mmHg
IP:
10.84 eV
Sp.Gr:
0.79
Fl.P:
52°F
UEL:
36%
LEL:
6.0%
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities
Strong oxidizers
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, upper respiratory system; headache, drowsiness, dizziness, nausea, vomiting; visual disturbance, optic nerve damage (blindness); dermatitis
Target Organs
Eyes, skin, respiratory system, central nervous system, gastrointestinal tract
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
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Water flush promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations

NIOSH/OSHA

Up to 2000 ppm:
(APF = 10) Any supplied-air respirator

Up to 5000 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode

Up to 6000 ppm:
(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is 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:
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 0057   See MEDICAL TESTS: 0137
 

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