Trimellitic Anhydride

Product details

Trimellitic Anhydride (TMA) is a Dicarboxylic Acid and is being produced by oxidation
of Pseudocumene (1,2,4-Trimethylbenzene).
Synonym: Benzene-1,2,4-Tricarboxylic-1,2-anhydride
CAS-Nr. 552-30-7
EINECS-No. 209-008-0
Uses/applications:
Polyester- and Polyamide Resins, raw material for PVC-plasticizers,
curing agent (hardener) for Epoxy Resins, watersoluble Alkyd- and Amino-alkyd resins, Polyurethane Resins, Wire enamels, etc.

Specifications

Specification FLAKES

MSDS according 91/155 EEC (2001/58 EC)

Product inquiry / Your message

more information

possible hazards

Information pertaining to particular dangers for man and environment:
R 37 Irritating to respiratory system.
R 41 Risk of serious damage to eyes.
R 42/43 May cause sensitisation by inhalation and skin contact.

Classification system for Trimellitic Anhydride (TMA):
The classification was made according to the latest editions of the EU-lists, and expanded using company data and specialized
literature.

Additional information: Aqueous solutions of the substance are acidic.

Composition / information on ingredients

Chemical characterization for Trimellitic Anhydride (TMA), Benzene-1,2,4-Tricarboxylic-1,2-anhydride:
CAS No. Description:
552-30-7 benzene-1,2,4-tricarboxylic-1,2-anhydride

Identification number(s):
EINECS Number: 209-008-0
EU Number: 607-097-00-4

Physical and Chemical Properties

General Information for Trimellitic Anhydride (TMA), Benzene-1,2,4-Tricarboxylic-1,2-anhydride:
Form:	Flakes
Colour:	Whitish
Odour:	mouldy

Change in condition:
Melting point/Melting range:	165°C
Boiling point/Boiling range:	390°C

Flash point:	not applicable
Flammability (solid, gaseous)	Product is not flammable.
Danger of explosion:	Product is not explosive. However, formation of explosive air/dust mixtures is possible.

Explosion limits:
Lower:	1 Vol %
Upper:	7 Vol %

Vapour pressure:	7.6x10-5 Pa
Density at 20°C:	1.54 g/cm³

Solubility in / Miscibility with
Water:	decomposition

pH-value (21 g/l) at 20°C:	2
Segregation coefficient (n-octanol/water):	1.95 log POW
Additional information:	Soluble in acetone.

Transport information

Land transport ADR/RID (cross-border) for Trimellitic Anhydride (TMA):
ADR/RID class: -
No hazardous good according to the regulation.

Maritime transport IMDG:
IMDG Class: -
No hazardous good according to the regulation.

Air transport ICAO-TI and IATA-DGR:
ICAO/IATA Class: -
No hazardous good according to the regulation.

Regulatory information

Markings according to EC guidelines for Trimellitic Anhydride (TMA):
The product has been classified and marked in accordance with EU Directives / Ordinance on Hazardous Materials
EC-labelling

Code letter and hazard designation of product:
Xn Harmful

Risk phrases:
37 Irritating to respiratory system.
41 Risk of serious damage to eyes.
42/43 May cause sensitisation by inhalation and skin contact.

Safety phrases:
22 Do not breathe dust.
26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
36/37/39 Wear suitable protective clothing, gloves and eye/face protection.

National regulations

Information about limitation of use:
Employment restrictions concerning pregnant and lactating women must be observed.
Restrictions on juvenile employment must be observed.

Water hazard class: Water hazard class 1 (Self-assessment): slightly hazardous for water.