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Trimellitic anhydride																				Related Pages
Synonyms & Trade Names
			1,2,4-Benzenetricarboxylic anhydride, 4-Carboxyphthalic anhydride, TMA [Trimellitic anhydride], TMAN, Trimellic acid anhydride
					[Note: TMA is also a synonym for Trimethylamine.]
CAS No.
			552-30-7
	RTECS No.
			DC2050000
	DOT ID & Guide

FormulaC9H4O5
	Conversion
			1 ppm = 7.86 mg/m3
	IDLH
			N.D.See: IDLH INDEX

Exposure Limits
			NIOSH RELTWA 0.005 ppm (0.04 mg/m3) Should be handled in the workplace as an extremely toxic substance.
					OSHA PEL none See Appendix G
	Measurement Methods
			**NIOSH** 5036;**OSHA** 98
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless solid.													
										
Molecular Weight192.1	
	Boiling Point?
	Melting Point322°F
	Solubility?
	Vapor Pressure0.000004 mmHg
	Ionization Potential?											
Specific Gravity?	
	Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA
Combustible Solid
Incompatibilities & Reactivities
			None reported
Exposure Routes
			inhalation, ingestion, skin and/or eye contact
Symptoms
			irritation eyes, skin, nose, respiratory system; pulmonary edema, resp sensitization; rhinitis, asthma, cough, wheezing, dyspnea (breathing difficulty), malaise (vague feeling of discomfort), fever, muscle aches, sneezing
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:**Daily
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Soap wash
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately
Respirator Recommendations
			Not available.
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0345

			
							

			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
RTECS Numbers
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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