Product Description

PTA (purified terephthalic acid) is a fundamental feedstock for countless applications including PET polyester packaging, textiles, clothing, plastics, car parts, tires, carpeting, toys, and more. Made from CMF, Origin PTA enables the production of carbon-negative products using sustainable wood residues instead of petroleum.

Product Benefits

  • Cost-competitive with fossil-based PTA

  • Sustainable, drop-in ready material, and physically and chemically identical to fossil-based PTA

  • Precursor to Origin PET plastic, which is recyclable within the existing infrastructure and supports a circular economy vision

  • Expected to provide stable pricing largely de-coupled from the petroleum supply chain, which is exposed to more volatility than supply chains based on sustainable wood residues

  • Up to 100% bio-content


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PTA (Purified Terephthalic Acid)

Product Information

  • Chemical Formula: C8H6O4

  • IUPAC Name: Terephthalic Acid

  • CAS Number: 100-21-0

  • EINECS (European Inventory of Existing Commercial Chemical Substances): 202-830-0

  • EPA Substance Registry System: 1,4-Benzenedicarboxylic Acid (Systematic Name)


  • Molecular Weight: 166.13 g/mol Lit.

  • Melting Point: > 300°C (> 572°F) Lit.

  • Relative Density: 1.5g/cm3 Lit.

  • Vapor Density: 5.74 (Air = 1) Lit.

  • Vapor Pressure: < 0.01 hPa (< 0.01 mmHg) at 20 °C (68 °F) Lit.

  • Color: White

  • Water Solubility: 0.017g/Lat 25°C (77°F) – Slightly Soluble Lit.

  • SMILES String (Simplified Molecular-Input Line-Entry System: Molecular Structure): C1=CC(=CC=C1C(=O)O)C(=O)O

  • InChI: 1S/C8H6O4/c9-7(10)5-1-2-6(4-3-5)8(11)12/h1-4H,(H,9,10)(H,11,12)

Alternative Product Names

p-Phthalic acid, MTA, 1,4-Benzenedicarboxylic acid, p-Dicarboxybenzene, p-Benzenedicarboxylic acid, p-Phthalate, para-Phthalic acid, Benzene-p-dicarboxylate, ACMC-1BUZR, benzene-1,4-dioic acid, WLN: QVR DVQ, Terephthalic acid, 97%, Terephthalic acid, 98%, EC 202-830-0, SCHEMBL1655, para-benzenedicarboxylic acid, Benzene, p-dicarboxylic acid, 4-09-00-03301 (Beilstein Handbook Reference), BIDD:ER0245, tere-Phthalic Acid (Sublimed), CHEMBL1374420, DTXSID6026080, Benzene, 1,4-Dicarboxylic acid, p-Dicarboxybenzene p-Phthalic acid, BCP06429, NSC36973, STR02759, Tox21_201659, Tox21_303229, ANW-14186, NSC-36973, RW2132, s6251, SBB060285, STL281856, ZINC12358714, Terephthalic acid, analytical standard, AKOS000119464, CS-W010814, HY-W010098, MCULE-9289682931, NE10209, TEREPHTHALIC-CARBOXY-13C2 ACID, NCGC00091618-01, NCGC00091618-02, NCGC00091618-03, NCGC00257014-01, NCGC00259208-01, AC-10250, AK137962, BP-21157, FT-0674866, FT-0773240, ST50824887, 6806-EP2270113A1, 6806-EP2272935A1, 6806-EP2284165A1, 6806-EP2292611A1, 6806-EP2298776A1, 6806-EP2301536A1, 6806-EP2301538A1, 6806-EP2305808A1, 6806-EP2308865A1, 6806-EP2311455A1, 6806-EP2314295A1, 6806-EP2314575A1, 6806-EP2374895A1, C06337, Terephthalic acid, SAJ special grade, >=98.0%, AE-562/40217759, Q408984, Terephthalic acid, Vetec(TM) reagent grade, 98%, Z57127536, F0001-0012, Kyselina terftalova, RARECHEM AL BO 0011, 1,4-phthalicacid, Ecamsule Related Compound C, United States Pharmacopeia (USP) Reference Standard, UB7, AI3-16108, P-Phthelate, P-Phthelic acid, p-Benzenedicarboxylate, terephthalsäure, 100-21-0, benzene-1,4-dicarboxylic acid, Tephthol, DSSTox_CID_6080, 99+%, DSSTox_RID_78007, DSSTox_GSID_26080, Acide terephtalique [French], Kyselina tereftalova [Czech], CAS-100-21-0, CCRIS 2786, 4-Carboxybenzoic Acid, EINECS 202-830-0, BRN 1909333, p-Carboxybenzoic acid, Acide terephtalique, 1,4-dicarboxybenzene, Kyselina tereftalova, WR 16262, TA-33MP, NSC 36973, HSDB 834, TA 12, UNII-6S7NKZ40BQ, Kyselina terftalova, MFCD00002558, Benzene-p-dicarboxylic acid, 6S7NKZ40BQ, CHEBI:15702,

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