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Trimellitic acid

Trimellitic acid structure

CAS No:
528-44-9
Formula:
C9H6O6
Chemical Name:
Trimellitic acid
Synonyms:
1,2,4-Benzenetricarboxylic acid;1,2,4-Tricarboxybenzene;Trimellitic acid;1,4,5-Benzenetricarboxylic acid;1,3,4-Benzenetricarboxylic acid;4-Carboxyphthalic acid;NSC 72986;F-TMA;ETM;Trimellic acid;Benzene-1,2,5-tricarboxylic acid
Categories:
Catalyst and Auxiliary > Coupling Agent

Description

Colorless crystals.Partially soluble in DMF and alcohol; insoluble in benzene and carbon disulfide; slightly soluble in water.

Trimellitic acid is benzene substituted at the 1,2, and 4 positions by carboxy groups.

Trimellitic acid Basic Attributes

Molecular Weight：

210.14

Exact Mass：

210.14

BRN：

2214815

EC Number：

208-432-3

UNII：

7NVY29MQ5F

NSC Number：

72986

DSSTox ID：

DTXSID3021487

HScode：

29173990

Characteristics

PSA：

112

XLogP3：

0.3

Appearance：

White Crystalline Powder

Density：

0.317 g/cm³

Melting Point：

219 °C

Boiling Point：

200-220 °C @ Press: 12 Torr

Flash Point：

273.6±25.2 °C

Refractive Index：

1.663

Water Solubility：

H2O: 2.1 G/100 ML (25 ºC)

Storage Conditions：

2-8°C

Safety Information

Transport codes：

NONH for all modes of transport

wgk germany：

hazard class code：

36/37/38

safety instructions：

26-36-37/39

RTECS Number：

DC1980000

Marks：

Hazard note：

Irritant

Precautionary statement(s)：

P261-P305 + P351 + P338

Hazard Statements：

H315-H319-H335

GHS Classification：

|Warning|H315 (99.26%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 303 companies from 13 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Drug Information

MeSH Entry Terms：

1,2,4-tricarboxybenzene

Trimellitic acid Use and Manufacturing

Methods of Manufacturing

It is obtained by using meta-toluene (1, 2, 4-trimethylbenzene) as raw material, through nitric acid oxidation or potassium permanganate oxidation or liquid phase air oxidation. 1. The first step oxidation of nitric acid oxidation method: the molar ratio of mesitylene and nitric acid is 1: 2.16, the concentration of nitric acid is 17%, the reaction temperature is 200 ℃, and the reaction pressure is about 3.9 MPa or less. The second step oxidation: the molar ratio of meta-toluene to nitric acid is 1:4.5, the concentration of nitric acid is 50%, the reaction temperature is 180°C, and the reaction pressure is about 3.9 MPa or less. The trimellitic acid mother liquor obtained by the reaction is cooled, crystallized, centrifuged and washed to dry the finished product. The yield is over 55%. 2. The potassium permanganate oxidation method uses 95% purity of meta-trimethylbenzene as the raw material, and is oxidized with potassium permanganate at a temperature of 90-95℃ in the presence of 20-30 times water, and the resulting product is acidified and recrystallized , Dry, get white needle crystal.

Uses

Intermediate in the preparation of resins, plasticizers, dyes, inks, adhesives.

Manufacturing Info：

1,2,4-Benzenetricarboxylic acid: ACTIVE

Computed Properties

Molecular Weight:210.14
XLogP3:0.3
Hydrogen Bond Donor Count:3
Hydrogen Bond Acceptor Count:6
Rotatable Bond Count:3
Exact Mass:210.01643791
Monoisotopic Mass:210.01643791
Topological Polar Surface Area:112
Heavy Atom Count:15
Complexity:297
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Toluene

Sodium hydroxide

Ethanol

Sodium nitrite

Hydrochloric acid

Sulfuric acid

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Guide of Trimellitic acid

Description
Basic Attributes
Characteristics
Safety Information
Drug Information
Use and Manufacturing
Computed Properties
Material
Recommended Suppliers
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Trimellitic acid

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