Pyromellitic acid

Base Information

• Chemical Name: Pyromellitic acid
• CAS No.: 89-05-4
• Molecular Formula: C10H6O8
• Molecular Weight: 254.153
• Hs Code.: 29173980
• European Community (EC) Number: 201-879-5
• NSC Number: 6369
• UNII: D9UXG2U6ZU
• DSSTox Substance ID: DTXSID8044466
• Nikkaji Number: J4.299D
• Wikidata: Q3453375
• Metabolomics Workbench ID: 67534
• ChEMBL ID: CHEMBL1235346
• Mol file: 89-05-4.mol

Synonyms:pyromellitic acid;pyromellitic acid, cesium (3+) salt, (3:4);pyromellitic acid, cesium salt;pyromellitic acid, cobalt salt;pyromellitic acid, copper (2+) salt;pyromellitic acid, dicopper (2+) salt;pyromellitic acid, dinickel (2+) salt;pyromellitic acid, maganese salt;pyromellitic acid, monoammonium salt;pyromellitic acid, monosodium salt;pyromellitic acid, potassium salt;pyromellitic acid, tetrasilver (1+) salt;pyromellitic acid, tetrasodium salt;pyromellitic acid, thorium (4+) salt

Chemical Property of Pyromellitic acid

Chemical Property:

• Appearance/Colour: White powder
• Vapor Pressure: 1.45E-14mmHg at 25°C
• Melting Point: 281-284.5 °C(lit.)
• Refractive Index: 1.7010 (estimate)
• Boiling Point: 585.8 °C at 760 mmHg
• PKA: pK1: 1.92;pK2: 2.87;pK3: 4.49;pK4: 5.63 (25°C)
• Flash Point: 322.1 °C
• PSA: 149.20000
• Density: 1.821 g/cm³
• LogP: 0.47940
• Storage Temp.: Store below +30°C.
• Solubility.: 0.1 M NaOH: 0.2 M, clear, faintly yellow
• Water Solubility.: 1.5 g/100 mL (20 ºC)
• XLogP3: 0
• Hydrogen Bond Donor Count: 4
• Hydrogen Bond Acceptor Count: 8
• Rotatable Bond Count: 4
• Exact Mass: 254.00626715
• Heavy Atom Count: 18
• Complexity: 327

Purity/Quality:

99% ^*data from raw suppliers

1,2,4,5-Benzenetetracarboxylic acid ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi
• Statements: 36/37/38-36
• Safety Statements: 26-36-37/39-24/25

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Other Classes -> Organic Acids
• Canonical SMILES: C1=C(C(=CC(=C1C(=O)O)C(=O)O)C(=O)O)C(=O)O
• Uses: Pyromellitic acid (PMA) is mainly used as intermediate for powder coating. Product Data Sheet 1,2,4,5-benzenetetracarboxylic acid is used for the synthesis of the polyimide, pyromellitic octyl, etc., it is the main raw material of matting curing agent. Pyromellitic acid is an eluent used in anion chromatography and forms complexes with magnesium and calcium ions. It is used as a curing agent, as an intermediate for powder coating and a cross-linking agent for alkyd resin. It is involved in the synthesis of polyimide and pyromellitic octyl.

Technology Process of Pyromellitic acid

There total 115 articles about Pyromellitic acid which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 99.0%

2,3,6,7-Tetrahydro-2,6-di-n-butylbenzo<1,2-c:4,5-c'>dipyrrole-1,5-dione (85067-96-5) → 1,2,4,5-benzenetetracarboxylic acid (89-05-4)

Guidance literature:

With nitric acid; at 130 ℃; for 4h;

DOI:10.1021/jo00158a020

Reference yield: 97.0%

1,2,4,5-tetramethylbenzene (95-93-2) → 1,2,4,5-benzenetetracarboxylic acid (89-05-4)

Guidance literature:

With 3H₃N*3H⁽¹⁺⁾*[MnMo₆O₁₈(OH)6]^(3-)*7H₂O; sodium acetate; In acetonitrile; at 100 ℃; for 15h; under 7500.75 Torr; Reagent/catalyst; Solvent;

Reference yield: 96.6%

Pyromellitic dianhydride (89-32-7,34527-94-1) → 1,2,4,5-benzenetetracarboxylic acid (89-05-4)

Guidance literature:

With water; for 4h; Reflux;

upstream raw materials:

2,4,5-trimethylbenzaldehyde

tetrachloromethane

4,5-dimethylphthalic anhydride

2,3-dibromo-glutaric acid

Downstream raw materials:

tetramethyl 1,2,4,5-benzenetetracarboxylate

fluorescein

3',6'-dihydroxy-3-oxo-spiro[phthalan-1,9'-xanthene]-5,6-dicarboxylic acid

N,N,N',N',N'',N'',N''',N'''-octamethyl-1,2,4,5-benzenetetracarboxamide

Refernces

• 1、 Gensler,Whitehead. "". . p. 3843,3844,3845. Retrieved 1973.
• 2、 Wang, Chang-Cheng,Zhang, Guo-Xiang,Zuo, Zhi-Wei,Zeng, Rong,Zhai, Dan-Dan,Liu, Feng,Shi, Zhang-Jie. "Photo-induced deep aerobic oxidation of alkyl aromatics". . p. 1487 - 1492. Retrieved 2021/07/10.
• 3、 Han, Bo,Ma, Pengchen,Cong, Xuefeng,Chen, Hui,Zeng, Xiaoming. "Chromium- and Cobalt-Catalyzed, Regiocontrolled Hydrogenation of Polycyclic Aromatic Hydrocarbons: A Combined Experimental and Theoretical Study". supporting information. p. 9018 - 9026. Retrieved 2019/06/13.