P-phthalic Acid
11 Inquiries
100-21-0
Shanghai
25kg/Cardboard Drum
2025-08-31
Resin,Coating&Ink,Adhesive,Polyurethane,Home&Personal Care,Plastic & Rubber
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Product Description
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Seller Information
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Inquiry History
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DescriptionBasic Info
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Product Name:
Terephthalic acid
Other Name:1,4-Benzenedicarboxylic acid;Terephthalic acid;p-Benzenedicarboxylic acid;p-Phthalic acid;WR 16262;p-Dicarboxybenzene;p-Carboxybenzoic acid;TPA;1,4-Dicarboxybenzene;4-Carboxybenzoic acid;NSC 36973;TA 33LP;QTA;Amoco TA 33;S-LOP;TPA (terephthalic acid);PTM 6633;211863-90-0;211863-92-2;2088100-81-4
CAS No.:100-21-0
Molecular Formula:C8H6O4
InChIKeys:InChIKey=KKEYFWRCBNTPAC-UHFFFAOYSA-N
Molecular Weight:166.13
Exact Mass:166.13
BRN:1909333
EC Number:202-830-0
UNII:6S7NKZ40BQ
ICSC Number:0330
NSC Number:36973
DSSTox ID:DTXSID6026080
Color/Form:Needles|White crystals or powder
HScode:2917361100
Categories:
Characteristics-
PSA:
74.6
XLogP3:2
Appearance:White Crystalline Powder
Density:1.51 g/cm3
Melting Point:402 °C (sublm)
Boiling Point:>572°F (sublimes)
Flash Point:260°C
Refractive Index:1.648
Water Solubility:slightly soluble in water (0,017 g/L at 25°C)
Storage Conditions:0-6°C
Vapor Pressure:<0.01 mm Hg ( 20 °C)
Explosive limit:Can explode during preparation.
Henrys Law Constant:Henry's Law constant = 3.9X10-13 atm-cu m/mole at 25 °C (est)
Dissociation Constants:The dissociation constants pK1 and pK2 for terephthalic acid at 25 °C are 3.54 and 4.46, respectively.
Experimental Properties:Sublimes at 402 °C|Hydroxyl radical reaction rate constant = 1.2X10-12 cu cm/molec-sec at 25 °C (est)
Air and Water Reactions:Insoluble in water.
Reactive Group:Acids, Carboxylic
Reactivity Profile:TEREPHTHALIC ACID is a carboxylic acid. It donates hydrogen ions if a base is present to accept them. This "neutralization" generates substantial amounts of heat and produces water plus a salt. Insoluble in water but even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in it to corrode or dissolve iron, steel, and aluminum parts and containers. May react with cyanide salts to generate gaseous hydrogen cyanide. Will react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by reaction with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. React with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. May initiate polymerization reactions; may catalyze (increase the rate of) chemical reactions.
Autoignition Temperature:925 °F (496 °C)|496 °C
Physical Dangers:Dust explosion possible if in powder or granular form, mixed with air.
Hazard IdentificationClassification of the substance or mixture
Not classified.
GHS label elements, including precautionary statements
Pictogram(s) No symbol. Signal word No signal word
Hazard statement(s) none
Precautionary statement(s) Prevention none
Response none
Storage none
Disposal none
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
NO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust. 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
Separated from strong oxidants.
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Seller Information
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Business Type:
Distributor
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Main Products:
Resin,Coating&Ink,Adhesive,Polyurethane,Home&Personal Care,Plastic & Rubber
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Location:
12F Huayin Building, NO.5, Donghai West, Road, Qingdao, China
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Payment Terms:
TT against copy of documents,D/P,L/C,O/A,100% TT in advance
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Average lead Time:
40
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Total Annual Revenue:
$2.5 million-$5 million
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Total Employees:
101-200
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Year of Establishment:
2007
ECHEMI Chemical BU provides raw materials covering different industries, CASE, Polyurethane, Home & Personal Care, Plastic & Rubber, etc., serves customers over 110 countries and regions.
As a bridge connecting chemical producers and end-users, we provide efficient, safe and sustainable chemical service and high-quality products to our customers.
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Inquiry History11 Inquiries
Country Product Purchase Quantity Date Posted 
Pakistan
Pta Purified Terephthalic Acid Hengli Brand
400000 KG Aug 8, 2025 
India
Terephthalic Acid
20.00 TON Jan 26, 2025
India
Terephthalic Acid
25.00 KG Dec 9, 2024 
Bangladesh
terephthalic acid 99%
1 KG Sep 3, 2025 
Thailand
Terephthalic Acid
1 KG Aug 21, 2025 
Poland
Terephthalic acid
100 MT Aug 13, 2025 
Uzbekistan
Pure Terephthalic acid (PTA)
100 MT Oct 14, 2023 
Indonesia
Pure Terephthalic acid (PTA)
1 TON Jul 13, 2023
Bangladesh
Terephthalic acid
120 MT May 17, 2025 
Austria
Purified Terephthalic Acid PTA
500 MT Nov 1, 2023
Uzbekistan
Pure Terephthalic acid (PTA)
200 MT Aug 21, 2023 Post an enquiry for this product
