Pyromellitic Acid
1 Inquiries
89-05-4
Tech Grade
99%
DAHAI BIOCHEM
25kg/Drum
Yes
2026-12-31
HARD FAT
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Product Description
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Seller Information
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Inquiry History
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DescriptionECHEMI Editorial ReferenceWhite powder. Absorbs moisture slowly if exposed to atmosphere. Soluble in alcohol, slightly soluble in water.
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.
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.]Basic Info-
Product Name:
Pyromellitic acid
Other Name:USAF xr-20;1,2,4,5-BenzenetetracarboxyL;benzene-1,2,4,5-tetracarboxylate;1,2,4,5-Benzenetetracarboxylic acid,Pyromellitic acid;1,2,4,5-Benzenetetracarboxylic acid, 96% 100GR;1,2,4,5-Benzenetetracarboxylic acid, 96% 5GR;1,2,4,5-BENZENETETRACARBOXYLIC ACID FOR;Pyrome1htic Acid
CAS No.:89-05-4
Molecular Formula:C10H6O8
InChIKeys:CYIDZMCFTVVTJO-UHFFFAOYSA-N
Molecular Weight:254.15
Exact Mass:254.15
EC Number:201-879-5
UNII:D9UXG2U6ZU
NSC Number:6369
TSCA:TSCA listed
DSSTox ID:DTXSID8044466
Color/Form:White to very slightly yellow
HScode:29173980
Categories:
Characteristics-
PSA:
149.20000
XLogP3:0.44
Appearance:White to very slightly yellow Crystalline Powder
Density:0,56 g/cm3
Melting Point:281-284.5 °C(lit.)
Boiling Point:317.36°C (rough estimate)
Flash Point:325 °C
Refractive Index:1.7010 (estimate)
Water Solubility:1.5 g/100 mL (20 ºC)
Storage Conditions:Store below +30°C.
PKA:pK1: 1.92;pK2: 2.87;pK3: 4.49;pK4: 5.63 (25°C)
Henrys Law Constant:1.6×1013mol/(m3Pa) at 25℃, Yaws (2003)
Dissociation Constants:1.87 (at 25 °C)
Critical Temperature & Pressure:Store below +30°C.
Hazard IdentificationClassification of the substance or mixture
Eye irritation, Category 2
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Warning
Hazard statement(s) H319 Causes serious eye irritation
Precautionary statement(s) Prevention P264 Wash ... thoroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
Response P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Storage none
Disposal none
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.
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Seller Information
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Business Type:
Trader
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Main Products:
HARD FAT
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Location:
BUILDING 4,NO.571, STR.19,BAIYANG DISTRICT, HANGZHOU,CHINA
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Payment Terms:
TT against copy of documents,TT against B/L draft before shipment,100% TT in advance
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Total Annual Revenue:
Less than $1 million
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Total Employees:
5-10
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Year of Establishment:
2025
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Inquiry History1 Inquiries
Country Product Purchase Quantity Date Posted 
Poland
Pyromellitic acid
25 KG Aug 4, 2026 Post an enquiry for this product
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