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Thioglycolic acid																				Related Pages
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

FormulaHSCH2COOH
	Conversion
			1 ppm = 3.77 mg/m3
	IDLH
			N.D.See: IDLH INDEX

Exposure Limits
			NIOSH RELTWA 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 Weight92.1	
	Boiling Point?
	Freezing Point2°F
	SolubilityMiscible
	Vapor Pressure(64°F): 10 mmHg
	Ionization Potential?											
Specific Gravity1.32	
	Flash Point>230°F
	Upper Explosive Limit?
	Lower Explosive Limit5.9%
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 NIOSH Pocket Guide to Chemical Hazards
Introduction
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Chemical Names, Synonyms and Trade Names
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CAS Numbers
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
First Aid Procedures Follow NIOSH Facebook
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