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Acetylsalicylic acid

Synonyms & Trade Names
o-Acetoxybenzoic acid, 2-Acetoxybenzoic acid, Aspirin
CAS No.
50-78-2
RTECS No.
VO0700000
DOT ID & Guide
Formula
CH3COOC6H4COOH
Conversion
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
: TWA 5 mg/m3
OSHA PEL
†: none
Measurement Methods

NIOSH 0500
See: NMAM or OSHA Methods
Physical Description
Odorless, colorless to white, crystal-line powder. [aspirin] [Note: Develops the vinegar-like odor of acetic acid on contact with moisture.]
MW:
180.2
BP:
284°F (Decomposes)		 MLT: 275°F Sol(77°F): 0.3%
VP:
0 mmHg (approx)
IP:
NA
Sp.Gr:
1.35
Fl.P:
NA
UEL:
NA
LEL:
NA
MEC:
40 g/m3
Combustible Powder; explosion hazard if dispersed in air.
Incompatibilities & Reactivities
Solutions of alkali hydroxides or carbonates, strong oxidizers, moisture [Note: Slowly hydrolyzes in moist air to salicyclic & acetic acids.]
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, upper respiratory system; increased blood clotting time; nausea, vomiting; liver, kidney injury
Target Organs
Eyes, skin, respiratory system, blood, liver, kidneys
Personal Protection/Sanitation
(See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: No recommendation
Change: Daily
Provide: Eyewash, Quick drench
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 0822
 

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