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Malononitrile																				Related Pages
Synonyms & Trade Names
			Cyanoacetonitrile, Dicyanomethane, Malonic dinitrile
CAS No.
			109-77-3
	RTECS No.
			OO3150000
	DOT ID & Guide
			2647 153

FormulaNCCH2CN
	Conversion
			1 ppm = 2.70 mg/m3
	IDLH
			N.D.See: IDLH INDEX

Exposure Limits
			NIOSH RELTWA 3 ppm (8 mg/m3)
					OSHA PEL none
	Measurement Methods
			**NIOSH** Nitriles Crit. Doc.
					
					See: NMAM or OSHA Methods
										
Physical Description
			White powder or colorless crystals.
					[Note: Melts above 90°F. Forms cyanide in the body.]													
										
Molecular Weight66.1	
	Boiling Point426°F
	Melting Point90°F
	Solubility13%
	Vapor Pressure?
	Ionization Potential12.88 eV											
Specific Gravity1.19	
	Flash Point(oc) 266°F
	Upper Explosive Limit?
	Lower Explosive Limit?
Combustible Solid
Incompatibilities & Reactivities
			Strong bases
					[Note: May polymerize violently on prolonged heating at 265°F, or in contact with strong bases at lower temperatures.]
Exposure Routes
			inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
			irritation eyes, skin, nose, throat; headache, dizziness, lassitude (weakness, exhaustion), confusion, convulsions; dyspnea (breathing difficulty); abdominal pain, nausea, vomiting
Target Organs
			Eyes, skin, respiratory system, central nervous system, cardiovascular 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:**Daily
							**Provide:**Eyewash, Quick drench
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Water wash immediately
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately
Respirator Recommendations
			**NIOSH****Up to 80 mg/m3**: (APF = 10) Any supplied-air respirator**Up to 200 mg/m3**: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode**Up to 400 mg/m3**: (APF = 50) Any self-contained breathing apparatus with a full facepiece(APF = 50) Any supplied-air respirator with a full facepiece**Up to 667 mg/m3**: (APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode**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: 1466

			
							

			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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