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2-Methylterephthalic acid

Also known as: 2-Methyl-1,4-benzenedicarboxylic acid, 2,5-Toluenedicarboxylic acid, 5-Methylterephthalic acid, Methylterephthalic acid, NSC 20693, Terephthalic acid, methyl-, monomethylterephthalic acid

2-Methylterephthalic acid (CAS 5156-01-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H8O4 and a molecular weight of 180.15900 g/mol. Key properties include a boiling point of 388.2ºC at 760mmHg, a density of 1.377g/cm3 and a flash point of 202.8ºC. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
5156-01-4
Jingsj CID
J-1511265-9
Molecular Formula
C9H8O4
Molecular Weight
180.15900 g/mol
Category
Organic Acids
Last updated
11/2/2026
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Physicochemical Properties

Boiling Point388.2ºC at 760mmHg
Density1.377g/cm3
Flash Point202.8ºC
Exact Mass360.084503
PSA74.60000
LogP1.39140
Refractive Index1.611

Customs & Trade Information

HS Code2917399090
Summary2917399090 aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-Methylterephthalic acid?

The CAS number of 2-Methylterephthalic acid is 5156-01-4.

What are the molecular formula and molecular weight of 2-Methylterephthalic acid?

2-Methylterephthalic acid has molecular formula C9H8O4 and molecular weight 180.15900 g/mol.

What are the upstream and downstream products of 2-Methylterephthalic acid?

For 2-Methylterephthalic acid, Upstream Products: 2-Methylterephthalonitrile, Carbon dioxide, 1,2,4-TRIMETHYL BENZENE; Downstream Products: Trimellitic acid, Isophthalic acid, Dimethyl 2-methylterephthalate.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2-Methylterephthalic acid (CAS 5156-01-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1511265-9 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.