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Key Documents

B4600

Sigma-Aldrich

1,2,4-Benzenetricarboxylic anhydride

97%

Synonym(s):

Trimellitic anhydride, Benzene-1,2,4-tricarboxylic anhydride

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About This Item

Empirical Formula (Hill Notation):
C9H4O5
CAS Number:
Molecular Weight:
192.13
Beilstein/REAXYS Number:
9394
EC Number:
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23

vapor density

6.6 (vs air)

Quality Level

vapor pressure

<0.01 mmHg ( 20 °C)

assay

97%

form

solid

expl. lim.

7 %

mp

163-166 °C (lit.)

SMILES string

OC(=O)c1ccc2C(=O)OC(=O)c2c1

InChI

1S/C9H4O5/c10-7(11)4-1-2-5-6(3-4)9(13)14-8(5)12/h1-3H,(H,10,11)

InChI key

SRPWOOOHEPICQU-UHFFFAOYSA-N

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General description

1,2,4-Benzenetricarboxylic anhydride(TA) is a hydrophilic monomer with multipurpose usage; as a curing agent for epoxy based resins and as a plasticizer for polyvinyl chloride(PVC).

Application

TA can chemically modify sugarcane bagasse, which can be used in the absorption of auramine and safranin dyes from aqueous solutions. It can be blended with epoxy propane in the synthesis of polyurethane acrylates, which can be used as oligomers for ultra-violet based coatings. Polyamide P84 ultra-filtration membranes can be functionalized with TA by interacting the amide linkages with the anhydrides.

signalword

Danger

Hazard Classifications

Eye Dam. 1 - Resp. Sens. 1 - Skin Sens. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

440.6 °F - closed cup

flash_point_c

227 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves


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