Also known as: IPA, PIA, purified isophthalic acid, benzene-1,3-dicarboxylic acid
CAS 121-91-5C8H6O4Enquire for availability
The aromatic diacid that gives polyester resins chemical and weather resistance. Purified grade (PIA), 99.9% min. Available ex-stock UAE.
CAS No.
121-91-5
Formula
C8H6O4
Grade
Purified grade (PIA), 99.9% min
Packing
25 kg paper bag · 1000 kg jumbo bag
Typical response time: within one business day, with price, packing and lead time.
Isophthalic Acid (PIA) is the aromatic diacid that gives polyester resins chemical and weather resistance. We carry it within our acids line and supply it to manufacturers across the UAE, the GCC and East Africa.
It is supplied as white crystalline powder, in purified grade (PIA), 99.9% min, with an assay of 99.9% min. The CAS number is 121-91-5 and the molecular formula is C8H6O4.
Applications of Isophthalic Acid (PIA)
Where it is used:
Unsaturated polyester resins for gel coats, marine and corrosion-resistant laminates
PET bottle resin modification for improved clarity and barrier
Powder coating and coil coating polyester resin
Alkyd resin and plasticiser manufacture
Packing, storage and handling
Standard packing is 25 kg paper bag · 1000 kg jumbo bag. Store in cool, dry store. Shelf life is 24 months from the date of manufacture when stored as specified.
Buying Isophthalic Acid (PIA) in the UAE
Technical specification for Isophthalic Acid (PIA)
CAS No.
121-91-5
Formula
C8H6O4
Appearance
White crystalline powder
Grade
Purified grade (PIA), 99.9% min
Purity / Assay
99.9% min
Assay
99.9% min
Acid value
670–680 mg KOH/g
Moisture
0.2% max
Colour (APHA, molten)
10 max
Melting point
345–348 °C
Packing
25 kg paper bag · 1000 kg jumbo bag
Storage
Cool, dry store
Shelf life
24 months
Values are typical for the grade we stock. Please confirm the required specification with our sales team.
Unsaturated polyester resins for gel coats, marine and corrosion-resistant laminates
PET bottle resin modification for improved clarity and barrier
Powder coating and coil coating polyester resin
Alkyd resin and plasticiser manufacture
What packing is Isophthalic Acid (PIA) supplied in?
Isophthalic Acid (PIA) is supplied in 25 kg paper bag · 1000 kg jumbo bag. Other pack sizes can be arranged for container quantities — tell us what suits your plant.
Which grade of Isophthalic Acid (PIA) do you stock?
We supply purified grade (PIA), 99.9% min. If you work to a different specification, send it across — a large part of what we supply is sourced to the customer's own standard.
Can you deliver Isophthalic Acid (PIA) outside the UAE?
Yes. We ship to Oman, Qatar, Saudi Arabia, Kuwait and Bahrain by road and consolidated container, and to East and West African ports on CIF terms.
