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Thioglycolic acid

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Synonyms & Trade Names
Acetyl mercaptan, Mercaptoacetate, Mercaptoacetic acid, 2-Mercaptoacetic acid, 2-Thioglycolic acid, Thiovanic acid
CAS No.
68-11-1
RTECS No.
AI5950000
DOT ID & Guide
1940 153
Formula
HSCH₂COOH
Conversion
1 ppm = 3.77 mg/m3
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
TWA 1 ppm (4 mg/m3) [skin]
OSHA PEL
none See Appendix G
Measurement Methods
None available
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with a strong, disagreeable odor characteristic of mercaptans. [Note: Olfactory fatigue may occur after short exposures.]
Molecular Weight
92.1
Boiling Point
?
Freezing Point
2°F
Solubility
Miscible
Vapor Pressure
(64°F): 10 mmHg
Ionization Potential
?
Specific Gravity
1.32
Flash Point
>230°F
Upper Explosive Limit
?
Lower Explosive Limit
5.9%
Class IIIB Combustible Liquid: Fl.P. at or above 200°F.
Incompatibilities & Reactivities
Air, strong oxidizers, bases, active metals (e.g., sodium potassium, magnesium, calcium) [Note: Readily oxidized by air.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, nose, throat; lacrimation (discharge of tears), corneal damage; skin burns, blisters; In Animals: lassitude (weakness, exhaustion); gasping respirations; convulsions
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 or contaminated
Change:No recommendation
Provide:Eyewash, Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Water flush immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0915
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health