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Glycidol																				Related Pages
Synonyms & Trade Names
			2,3-Epoxy-1-propanol, Epoxypropyl alcohol, Glycide, Hydroxymethyl ethylene oxide, 2-Hydroxymethyl oxiran, 3-Hydroxypropylene oxide
CAS No.
			556-52-5
	RTECS No.
			UB4375000
	DOT ID & Guide

FormulaC3H6O2
	Conversion
			1 ppm = 3.03 mg/m3
	IDLH
			150 ppmSee: 556525

Exposure Limits
			NIOSH RELTWA 25 ppm (75 mg/m3)
					OSHA PEL TWA 50 ppm (150 mg/m3) See Appendix G
	Measurement Methods
			**NIOSH** 1608;**OSHA** 7
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless liquid.													
										
Molecular Weight74.1	
	Boiling Point320°F (Decomposes)
	Freezing Point-49°F
	SolubilityMiscible
	Vapor Pressure(77°F): 0.9 mmHg
	Ionization Potential?											
Specific Gravity1.12	
	Flash Point162°F
	Upper Explosive Limit?
	Lower Explosive Limit?
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities
			Strong oxidizers, nitrates
Exposure Routes
			inhalation, ingestion, skin and/or eye contact
Symptoms
			irritation eyes, skin, nose, throat; narcosis
Target Organs
			Eyes, skin, respiratory system, central nervous 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
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Water wash promptly
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately
Respirator Recommendations
			**NIOSH****Up to 150 ppm**: (APF = 10) Any supplied-air respirator*(APF = 50) Any self-contained breathing apparatus 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 canisterAny appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0159

			
							

			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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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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