3-(Carboxymethyl)-1,2,4-cyclopentanetricarboxylic acid 1,4:2,3-dianhydride

1. product basic information table

2.nature

3-(Carboxymethyl)-1,2, acid 1,4:2,3-dianhydride (TCA-AH for short) is an alicyclic tetracarboxylic acid dianhydride compound. Its molecular structure contains two anhydride rings and a bridging carboxymethyl group, forming a unique tricyclic skeleton (4,10-dioxacyclo [6.3.1.0,] dodecane -3,5,9,11-tetraketone structure).

In terms of physical properties: The compound has a melting point of 201°C and is white to off-white powder or crystal. It has a predicted density of about 1.567g/cm³, a high boiling point of 517.5°C (predicted value) and a flash point of 238.6°C, indicating good thermal stability. The refractive index is 1.556, the vapor pressure is very low (about 0.0±1.3 mmHg at 25°C), and it is almost non-volatile.

Chemical properties: As an acid anhydride compound, TCA-AH is highly sensitive to moisture and will undergo a hydrolysis reaction to generate the corresponding carboxylic acid. The dianhydride structure of its molecule enables its polycondensation reaction with diamine compounds, which is the key monomer for the synthesis of high-performance polyimide (PI) resins. The compound has very low solubility in water (4.0 × 10 · · g/L) and is a hydrophobic solid.

3. use

TCA-AH is an important high-performance polymer monomer, the main application areas include:

polyimide (PI) Resin Synthesis: As a tetracarboxylic dianhydride monomer, a polyimide is prepared by polycondensation with an aromatic or aliphatic diamine. Polyimides prepared therefrom have excellent thermal stability, mechanical strength and chemical resistance, and are widely used in aerospace, electrical and electronic, and automotive industries.

Electronic display materials: used in the manufacture of liquid crystal display (LCD) components, flexible circuit board (FPC) substrates and semiconductor packaging materials to meet the requirements of dimensional stability in high temperature processing environments.

Advanced coatings and adhesives: Using its characteristics of forming stable anhydride crosslinking points, special coatings and structural adhesives with high temperature resistance and high mechanical properties are prepared, which are suitable for aerospace composite bonding and electronic device packaging.

Optical film and resin film: used to produce high transparency, low birefringence optical grade polyimide film, used in flexible display, optical lens and optical waveguide materials.

Special engineering plastics: as a modified monomer into the polymer backbone, improve the material’s glass transition temperature (Tg) and thermal degradation resistance.

4. safety information

hazard Identification: According to the GHS classification, TCA-AH are skin irritants (Category 2), severe eye injury/eye irritants (Category 1/2A) and skin sensitizers (Category 1). Contact may cause skin redness, itching and, in severe cases, permanent eye damage.

Operational protection:

the operation should be carried out in a well-ventilated experimental environment or industrial production area, and it is recommended to equip with local exhaust devices.

Operators must wear chemical protective gloves (e. g. nitrile rubber gloves), protective glasses or face shields and dust masks.

Avoid dust inhalation and direct contact with skin and eyes. Wash hands and exposed parts thoroughly after operation.

Storage and transportation:

store in a cool, dry, well-ventilated warehouse at room temperature (15-25°C).

The package must be sealed with an inert atmosphere (nitrogen or argon) to prevent hygroscopic hydrolysis.

Keep away from water, humid environment and alkaline substances.

General chemical requirements shall be implemented during transportation to avoid package damage and rain.

Emergency treatment:

skin contact: immediately remove contaminated clothing, rinse with plenty of flowing water for at least 15 minutes, and seek medical attention.

Eye contact: immediately open the eyelids, rinse thoroughly with flowing water or normal saline for at least 15 minutes, and seek emergency medical attention.

Inhalation: quickly transfer to the fresh air, keep the respiratory tract unobstructed, such as breathing difficulties immediately seek medical attention.

Ingestion: Do not induce vomiting, rinse your mouth immediately and drink plenty of water, carry the product label for medical treatment.

Waste disposal: according to the requirements of local environmental protection laws and regulations, it shall be handed over to qualified hazardous waste treatment units for disposal, and it is forbidden to discharge into sewers or natural water bodies.

5. our production advantages and capacity

5.1 core production advantages

purity control: using high vacuum sublimation purification and recrystallization combined process, the conventional purity can reach ≥ 99.0 (HPLC/GC), and the highest electronic grade products can be provided with ≥ 99.5. the metal ion content (Na, K, Fe, etc.) is controlled below ppm level, meeting the strict standards of semiconductor and display panel industry.

Moisture control: the whole process of inert atmosphere to protect the production and packaging (glove box operation, nitrogen replacement), the moisture content of the finished product is less than or equal to 200 ppm, effectively inhibit the hydrolysis of acid anhydride, to ensure the downstream polymerization reaction activity and batch stability.

Process stability: multi-step cyclization and dehydration closed-loop process route with independent intellectual property rights, high reaction selectivity, few by-products, difference in molecular weight distribution between batches <1%, single batch feeding amount up to 100kg, excellent reproducibility.

Customized service: supports one-stop provision of particle size distribution (D50: 1-50μm adjustable), special packaging specifications (1 g-25 kg aluminum foil bag/aluminum bottle/iron drum) and COA, MSDS, RoHS and REACH compliance documents.

Quality certification: through the ISO 9001 quality management system certification, equipped with GC-MS, HPLC, ICP-OES, FT-IR, DSC, TGA and other full set of analytical instruments, each batch issued a complete quality inspection report.

Supply chain security: key raw materials to achieve dual-source procurement, the establishment of a six-month strategic safety inventory, to ensure that the customer’s long order supply is not affected by market fluctuations.

5.2 capacity scale

with an existing annual production capacity of 50 tons, the production line can be flexibly switched between electronic grade (≥ 99.0%) and industrial grade (≥ 97.0%) products. After the completion of the second phase of the project (expected to be put into operation in Q2 in 2027), the total production capacity will be increased to 120 tons per year, and it will become one of the major suppliers of alicyclic tetracarboxylic acid dianhydride in the Asia-Pacific region.

Delivery cycle: regular specifications from stock, delivery within 1-3 working days; customized specifications and bulk orders (≥ 500kg) delivery time of 7-15 working days.