Basic information
- Standard SMILES
O=C(O)c1cc(C(=O)O)c(C(=O)O)cc1C(=O)O- InChIKey
CYIDZMCFTVVTJO-UHFFFAOYSA-N- Molecular formula
- C10H6O8
- Average molar mass
- 254.15 g/mol
- Monoisotopic mass
- 254.00626715
Overview
Pyromellitic acid is a tetracarboxylic acid that is benzene substituted by four carboxy groups at positions 1, 2, 4 and 5 respectively. It is a member of benzoic acids and a tetracarboxylic acid.
Names & identifiers
- Preferred name
- Pyromellitic Acid
- IUPAC
- benzene-1,2,4,5-tetracarboxylic acid
- English name
- Pyromellitic acid
- Molecular formula
- C10H6O8
- Molecular weight
- 254.15
Names & synonyms
Show more names
Database identifiers
- CAS
89-05-4- PubChem CID
- 6961
- DTXSID
DTXSID8044466- ChEMBL
CHEMBL1235346- ChEBI
CHEBI:45165- UNII
- D9UXG2U6ZU
- EC Number
- 201-879-5
- Nikkaji
- J4.299D
Properties
Computed structural properties
- XLogP
- 0
- Topological polar surface area
- 149 Ų
- Hydrogen bond donors
- 4
- Hydrogen bond acceptors
- 8
- Rotatable bonds
- 4
- Heavy atoms
- 18
- Formal charge
- 0
- Complexity
- 327
Experimental & physicochemical properties
Physicochemical properties
- Melting point
- 281 · 281-284.5 °C(lit.)
- Boiling point
- 317.36 °C · 317.36°C (rough estimate)
- Density
- 0 · 0,56 g/cm3
- refractive index
- 1.701 · 1.7010 (estimate)
- Flash point
- 325 °C · 325 °C
- storage temp.
- 30 °C · Store below +30°C.
- solubility
- 0.1 M · 0.1 M NaOH: 0.2 M, clear, faintly yellow
- pka
- 1 · pK1: 1.92;pK2: 2.87;pK3: 4.49;pK4: 5.63 (25°C)
- form
- Crystalline Powder
- color
- White to very slightly yellow
- Water Solubility
- 1.5 g/100 · 1.5 g/100 mL (20 ºC)
- Merck
- 14 · 14,8004
- Henry's Law Constant
- 1.6 · 1.6×1013 mol/(m3Pa) at 25℃, Yaws (2003)
- Stability
- Stable. Incompatible with strong oxidizing agents, strong bases.
- InChI
- 1S/C10H6O8/c11-7(12)3-1-4(8(13)14)6(10(17)18)2-5(3)9(15)16/h1-2H,(H,11,12)(H,13,14)(H,15,16)(H,17,18)
- InChIKey
- CYIDZMCFTVVTJO-UHFFFAOYSA-N
- SMILES
- OC(=O)c1cc(C(O)=O)c(cc1C(O)=O)C(O)=O
- LogP
- 0.15 at · 0.15 at 25℃
- CAS DataBase Reference
- 89 · 89-05-4(CAS DataBase Reference)
- EWG's Food Scores
- 1 · 1
- FDA UNII
- 9 UXG2U6ZU · D9UXG2U6ZU
- NIST Chemistry Reference
- 1 · 1,2,4,5-Benzene-tetracarboxylic acid(89-05-4)
- EPA Substance Registry System
- 1 · 1,2,4,5-Benzenetetracarboxylic acid (89-05-4)
- UNSPSC Code
- 12352106 · 12352106
- NACRES
- 22 · NA.22
- Symbol(GHS)
- 7 · GHS07
- Signal word
- Warning
- Hazard statements
- 319 · H319
- Precautionary statements
- 280 · P280-P305+P351+P338-P337+P313
- PPE
- 95 · dust mask type N95 (US), Eyeshields, Gloves
- Hazard Codes
- Xi
- Risk Statements
- 36 · 36/37/38-36
- Safety Statements
- 26 · 26-36-37/39-24/25
- WGK Germany
- 3 · 3
- RTECS
- 9275000 · DB9275000
- F
- 34 · 34
- TSCA
- TSCA listed
- HS Code
- 29173980 · 29173980
- Storage Class
- 11 · 11 - Combustible Solids
- REACH Registrations
- Inactive
Safety & regulation
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 53.3% (128 of 240) of all reports.
Warning
H315 (21.2%): Causes skin irritation [Warning Skin corrosion/irritation]
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 240 reports by companies from 11 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Not Classified
Hazard information
Regulatory Information
Chemical: 1,2,4,5-Benzenetetracarboxylic acid
Status: Cease Manufacture Update: 28-03-2012 https://echa.europa.eu/registration-dossier/-/registered-dossier/12839
1,2,4,5-Benzenetetracarboxylic acid: Does not have an individual approval but may be used under an appropriate group standard
Safety & protection
Protective Action Criteria (PAC)
0.98 [mg/m3]
11 [mg/m3]
65 [mg/m3]
Safety data
- F
- 34
- PPE
- dust mask type N95 (US), Eyeshields, Gloves
- wgk
- 3
- tsca
- TSCA listed
- rtecs
- DB9275000
- hs_code
- 29173980
- risk_code
- 36/37/38-36
- Signal word
- Warning
- Symbol(GHS)
- GHS07
- hazard_code
- Xi
- safety_code
- 26-36-37/39-24/25
- Storage Class
- 11 - Combustible Solids
- Hazard statements
- H319
- REACH Registrations
- Inactive
- Precautionary statements
- P280-P305+P351+P338-P337+P313
Chemistry & industry
Uses & manufacturing
Uses
Used as a metal powder coating additive; [ExPub: ECHA REACH Registrations]
Painting (Pigments, Binders, and Biocides) [Category: Paint]
Applications
UsesPyromellitic 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.
UsesPyromellitic acid (PMA) is mainly used as intermediate for powder coating. Product Data Sheet
Uses1,2,4,5-benzenetetracarboxylic acid is used for the synthesis of the polyimide, pyromellitic octyl, etc., it is the main raw material of matting curing agent.
Upstream & downstream products
Upstream raw materials
Downstream products
Suppliers50 total
Additional notes
DefinitionChEBI: A tetracarboxylic acid that is benzene substituted by four carboxy groups at positions 1, 2, 4 and 5 respectively.
Related reactions
Linked notes
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