Isophthalic acid (IPA), has strong heat resistance, hydrolysis resistance and chemical resistance, can happen to salt, dehydration, hydrogenation, halogenation reactions, is the biggest use of ai as the intermediate of unsaturated polyester resin production, the second is used in the manufacture of polyester resin, alkyd resin (main use paint manufacturing) and printing ink. In addition, it can also be used to strengthen plastics and packaging, film forming agent, coating, polyester fiber dyeing modifier and medicine, etc., the development and utilization of a broad prospect.
Melting point | 341-343 °C (lit.) |
Boiling point | 214.32°C (rough estimate) |
density | 1,54 g/cm3 |
refractive index | 1.5100 (estimate) |
storage temp. | Sealed in dry,Room Temperature |
solubility | 0.12g/l |
pka | 3.54(at 25ºC) |
form | Crystalline Powder |
color | White to off-white |
Water Solubility | 0.01 g/100 mL (25 ºC) |
BRN | 1909332 |
Stability: | Stable. Incompatible with strong oxidizing agents, strong bases. |
InChIKey | QQVIHTHCMHWDBS-UHFFFAOYSA-N |
CAS DataBase Reference | 121-91-5(CAS DataBase Reference) |
NIST Chemistry Reference | 1,3-Benzenedicarboxylic acid(121-91-5) |
EPA Substance Registry System | Isophthalic acid (121-91-5) |


1. 25kg/bag, 20mt/20'fcl,
2.1000kg/bag, 20mt/20'fcl,
Customized according to suctomer requirements
1,Used for making alkyd resin, unsaturated polyester resin and other high polymer and plasticizer, also used for making film forming agent, fiber dyeing modifier
2,For the production of alkyd resins, unsaturated polyester resins and other polymers and plasticizers, but also for the manufacture of film forming agents, coatings and polyester fiber dyeing modifiers .
3,Used as chromatographic reagent and also in organic synthesis
4,Analytical reagent.Organic synthesis.
Achilles Chemical belongs to HOPE Chemical GROUP
Who we are: Hope Chemical is a distribution and consulting company based in California, USA.
Global offices: USA, India, Turkey, China.
Main business: trading chemical & oleo-chemical products in global markets.
Customer Success Drives Our Success
Principle: Trust, Integrity, Transparency.
Services: We try to deliver high quality, cost-effective products to our clients.
Activities: We stay in constant contact with partners to understand their product requirements and keep them up to date on market conditions, new product offerings and pricing information.
2. We can provide chemical raw materials in a wide range of fields, which includes Oleochemical; Coating, Ink, Paint & Adhesive; Food additives; Persenal care, home care; Pharmaceutical; Textile, leather; Matals, surface treatment; Fertilizer, Oil and gas.
3. We have 2 offices and 2 warehouses in Qingdao and Shanghai. Also We prepare stock in our warehouse before price increasing to ensure the stability of our supply.
Q. How to guarantee the quality?
Up-to-date facilities and technology, strict inspection in production process and final product, inspection before delivery.
Q: Do you provide samples ? Is it free?
A: Yes, we could offer the sample for free, but hope the customer to pay the courier cost.
Q: How long is your delivery time?
A: Generally it is about 15 days, if we have stock. If not, maybe need 20-30 days to arrange the shipping.
Q: What is your terms of payment ?
A: TT payment is favorable, LC at sight is fine. After we build good cooperation, we can discuss other payment terms.