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Pyromellitic acid

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Pyromellitic acid Basic information

Product Name:
Pyromellitic acid
CAS:
89-05-4
MF:
C10H6O8
MW:
254.15
EINECS:
201-879-5
Mol File:
89-05-4.mol
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Pyromellitic acid Chemical Properties

Melting point:
281-284.5 °C(lit.)
Boiling point:
317.36°C (rough estimate)
Density 
0,56 g/cm3
refractive index 
1.7010 (estimate)
Flash point:
325 °C
storage temp. 
Store below +30°C.
solubility 
0.1 M NaOH: 0.2 M, clear, faintly yellow
pka
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 mL (20 ºC)
Merck 
14,8004
Stability:
Stable. Incompatible with strong oxidizing agents, strong bases.
InChIKey
CYIDZMCFTVVTJO-UHFFFAOYSA-N
CAS DataBase Reference
89-05-4(CAS DataBase Reference)
NIST Chemistry Reference
1,2,4,5-Benzene-tetracarboxylic acid(89-05-4)
EPA Substance Registry System
1,2,4,5-Benzenetetracarboxylic acid (89-05-4)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38-36
Safety Statements 
26-36-37/39-24/25
WGK Germany 
3
RTECS 
DB9275000
34
TSCA 
Yes
HS Code 
29173980

MSDS

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Pyromellitic acid Usage And Synthesis

Chemical Properties

White powder. Absorbs moisture slowly if exposed to atmosphere. Soluble in alcohol, slightly soluble in water.

Uses

Pyromellitic acid (PMA) is mainly used as intermediate for powder coating. Product Data Sheet

Uses

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.

Definition

ChEBI: A tetracarboxylic acid that is benzene substituted by four carboxy groups at positions 1, 2, 4 and 5 respectively.

Hazard

Skin irritant, may be carcinogenic.

Purification Methods

Dissolve it in 5.7 parts of hot dimethylformamide, decolorise, filter and cool. The precipitate is collected and dried in air. The solvent is removed by heating in an oven at 150-170o for several hours. It also crystallises from water. [Beilstein 9 H 997, 9 IV 3804.]

Pyromellitic acid Preparation Products And Raw materials

Preparation Products

Raw materials

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Pyromellitic acidSupplierMore

J & K SCIENTIFIC LTD.
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010-82848833- ;010-82848833-
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jkinfo@jkchemical.com;market6@jkchemical.com
Meryer (Shanghai) Chemical Technology Co., Ltd.
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21-61259100-
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sh@meryer.com
Alfa Aesar
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400-610-6006; 021-67582000
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saleschina@alfa-asia.com
TCI (Shanghai) Development Co., Ltd.
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021-67121386 / 800-988-0390
Email:
Sales-CN@TCIchemicals.com
Beijing dtftchem Technology Co., Ltd.
Tel:
13651141086; 86(10)60275028、60275820
Email:
dtftchem@sina.com
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