IPA CAS 121-91-5

IPA CAS 121-91-5

Shanshan Resources Group has a registered capital of RMB 200 million and four core subsidiaries. Mainly engaged in energy and chemical raw materials, non-ferrous/ferrous metals, agricultural products, oil products, coal and other bulk commodities, the scale of trade in the industry in a leading position. Renowned for its use in polymer chemistry, IPA CAS 121-91-5 is a key component in the production of polyester resins. These resins find widespread use in coatings, laminates, and fiberglass-reinforced plastics.

Product Details
IPA CAS 121-91-5, with the chemical formula C8H6O4, is a solid compound found in colorless crystals. It has a melting point between 238-240 °C and is sparingly soluble in water but dissolves well in organic solvents. The density of solid Isophthalic Acid is approximately 1.49 g/cm³, and it is odorless.

Aliases: 1,3-Benzenedicarboxylic Acid, m-Phthalic Acid

CAS Number: 121-91-5

Purity: Commercially available with a purity exceeding 99%

Stability: Stable under standard storage conditions

Item Specification
Purity ≥99.9 %
Acid No 673 - 677 mgKOH/g
Moisture ≤0.1%
Ash ≤15 ppm
Total metal ≤10.00 ppm
Fe ≤1.00 ppm
Co ≤1.00 ppm
Mn ≤1.00 ppm


A linchpin in multiple industries, IPA CAS 121-91-5 is indispensable for the synthesis of top-tier polyester resins. Its significance shines in applications such as the production of fiberglass-reinforced plastics and laminates, ensuring robust and durable materials for diverse purposes.

Packing and shipment

Our IPA CAS 121-91-5 is available in 25kg/500 bags, 1ton FCB. We prioritize secure packaging to ensure the product's integrity during transportation. Shipping is handled with care, adhering to safety regulations to guarantee the product reaches you in optimal condition.\


For pricing details, please kindly contact us. We offer competitive prices and can provide customized quotes based on your specific requirements and order quantities.


1. Q:  How do you control quality?

Answer: The manufacturer has well-rounded producing line under EPR quality system. 

2. Q: Can we have samples?  

Answer: Yes, the sample is free,  and the mail is collect payment.

3. Q: How can we confirm the quality shipped?

Answer: We can arrange third party inspection or test before shipment.

4. Q: What about the packing ?

Answer: we pack the PTA in poly-woven bags with inner plastic membranes, common 1200 Kgs per bag.

5. Q: What's the payment?

Answer: L/C and TT is both acceptable

6. Q: Can I have a discount price?

Answer: Yes, under the friendly negotiation.

7. Q: What about the shipment arrangement?

Answer: Usually after 7-10 days after we receive L/C or TT.

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