Isophthalic acid Price — China Factory EXW 2026

Isophthalic acid price Spec: N/A

China EXW, VAT excluded

Newest China EXW USD 1,215.64 / MT · VAT excluded +0.4336 (0.00%) as of 20261105

Newest Price 1,215.64

Price Date 20261105

Day's Change +0.43

Day's Range 1,215.64 - 1,216.07

Month's Change -20.23

Month's Range 1,215.64 - 1,195.41

Year's Change +329.44

Year's Range 1,215.64 - 886.19

The spread between domestic and imported PIA is notable at about 1,000 yuan/ton. That gap reflects quality perception and reliability of supply. For converters, domestic material i...

Also known as 1,3-BENZENEDICARBOXYLIC ACID, 1,3-dicarboxybenzene, 1,3-PHENYL DICARBOXYLIC ACID, 1,3-phthalicacid

Opinions

What is the current price trend for isophthalic acid in China?

The spread between domestic and imported PIA is notable at about 1,000 yuan/ton. That gap reflects quality perception and reliability of supply. For converters, domestic material is increasingly viable, but importers still serve buyers needing specific specifications or guaranteed delivery schedules. Watch meta-xylene trends as the main cost lever.

Is China's isophthalic acid industry a duopoly, and what does that mean for buyers?

Buyers face limited negotiating leverage in this market. However, the 34% import share still provides an alternative supply source. Global producers like Lotte and BASF can serve as a price ceiling. For long-term planning, consider dual-sourcing strategies and monitor any capacity announcements from the two incumbents.

Why did China's isophthalic acid import dependence drop sharply in 2024?

The import substitution story is real, but note the oligopoly risk. With just two domestic producers and no new capacity since 2021, any unplanned outage could quickly tighten supply. Buyers should watch Hengyi's operating rates closely and consider locking in term contracts with importers as a hedge.

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Isophthalic acid price context

What drives Isophthalic acid prices

What is the current price trend for isophthalic acid in China?: The spread between domestic and imported PIA is notable at about 1,000 yuan/ton. That gap reflects quality perception and reliability of supply. For converters,...

Is China's isophthalic acid industry a duopoly, and what does that mean for buyers?: Buyers face limited negotiating leverage in this market. However, the 34% import share still provides an alternative supply source. Global producers like Lotte ...

How we assess Isophthalic acid price

China factory / mainstream market EXW quotes (VAT excluded where shown) - not a single global public index

Regional and specification detail so buyers can compare like-for-like grades

Landed cost figures from our calculator are planning estimates, not a customs ruling

Overview

Isophthalic acid (1,3-benzenedicarboxylic acid, PIA, CAS 121-91-5) is a white crystalline powder or needle-like crystal with high heat, hydrolysis, and chemical resistance. It serves as a key intermediate in polymer production, capable of undergoing salt formation, dehydration, hydrogenation, and halogenation reactions.

Polyester bottles: the largest downstream market in China, accounting for over 40% of consumption, driven by the country's leading global production of PET bottle chips.
Coatings & resins: raw material for alkyd resins and unsaturated polyester resins used in paints, printing inks, and reinforced plastics.
Textiles & pharmaceuticals: used as a dyeing modifier for polyester fibers and in pharmaceutical applications.
Packaging: contributes to enhanced plastic and packaging performance.

China's isophthalic acid industry is a concentrated oligopoly with few entrants due to high technical and capital barriers. The market is tightly linked to the domestic polyester bottle chip sector, whose output growth has driven rising PIA consumption and production. The upstream feedstock chain includes meta-xylene, cobalt acetate, and acetaldehyde.

Key domestic producers:
Yanshan Petrochemical – major integrated producer.
Hengyi Petrochemical – significant capacity holder.
Ningbo Formosa – active in the PTA and related aromatics chain.
Xili Bio – participant in the production segment.

Properties

Name

Isophthalic acid

1,3-BENZENEDICARBOXYLIC ACID

1,3-dicarboxybenzene

1,3-PHENYL DICARBOXYLIC ACID

1,3-phthalicacid

CAS Number

121-91-5

EINECS No.

204-506-4

Risk Codes

S24/25;S36;S26

Safety Description

36/37/38

HS Code

2917391000

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