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Nitromethane																				Related Pages
Synonyms & Trade Names
			Nitrocarbol
CAS No.
			75-52-5
	RTECS No.
			PA9800000
	DOT ID & Guide
			1261 129

FormulaCH3NO2
	Conversion
			1 ppm = 2.50 mg/m3
	IDLH
			750 ppmSee: 75525

Exposure Limits
			NIOSH RELSee Appendix D
					OSHA PEL TWA 100 ppm (250 mg/m3)
	Measurement Methods
			**NIOSH** 2527
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless, oily liquid with a disagreeable odor.													
										
Molecular Weight61.0	
	Boiling Point214°F
	Freezing Point-20°F
	Solubility10%
	Vapor Pressure28 mmHg
	Ionization Potential11.08 eV											
Specific Gravity1.14	
	Flash Point95°F
	Upper Explosive Limit?
	Lower Explosive Limit7.3%
Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
Incompatibilities & Reactivities
			Amines; strong acids, alkalis & oxidizers; hydrocarbons & other combustible materials; metallic oxides
					[Note: Slowly corrodes steel & copper when wet.]
Exposure Routes
			inhalation, ingestion, skin and/or eye contact
Symptoms
			dermatitis; In Animals: irritation eyes, respiratory system; convulsions, narcosis; liver damage
Target Organs
			Eyes, skin, central nervous system, liver
										
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:**Soap wash promptly
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately
Respirator Recommendations
			**OSHA****Up to 750 ppm**: (APF = 25) Any supplied-air respirator 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
					  ICSC CARD: 0522

			
							

			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
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