Products Description

Product Name: HQDA
CAS: 17828-53-4
MF: C22H10O8
MW: 402.31
Melting point: 251-252℃
Boiling point: 638.9±50.0 °C
Density: 1.566

Specification

Items	Specifications
Appearance	White crystal
Purity	99%Min.
storage temp.	2-8°C Refrigerator
Package	1 kg/bag or 20 kg/drum

Application

1. Acts as a key monomer for synthesizing high-performance polyimide resins with excellent thermal and mechanical stability.

2. Applied HQDA in manufacturing advanced electronic materials such as high-temperature insulation films and flexible circuit boards.

3. Utilized in producing aerospace-grade composite materials and corrosion-resistant coatings for harsh environments.

Storage and Precautions

HQDA (4,4'-Hydroquinone Diphthalic Anhydride) should be stored in a tightly sealed container at 2–8°C in a cool, dry, and well-ventilated dark area.

Protect HQDA from moisture, direct sunlight, and oxidizing agents to prevent hydrolysis and degradation.

During handling, wear chemical-resistant gloves, goggles, and a lab coat, and operate in a fume hood to avoid dust inhalation. Reseal the container immediately after use and dispose of waste per local hazardous chemical regulations. Avoid mixing with acids or bases.

Packaging

product-300-300

Transportation & Payment

Transportation

About Transportation

Depending on the requirements of our clients, we can give a variety of transportation options.

For smaller orders, we offer air shipping or international courier services like FedEx, DHL, TNT, EMS, and numerous other unique lines of international transit.

We can transport by sea to a specified port for bigger amounts.

Additionally, we can offer unique services based on the requirements of our clients and the characteristics of their goods.

payment

About Payment

* We can offer a range of payment options to our clients.

* When the sum is modest, clients typically pay with PayPal, Western Union, Alibaba, and other similar services.

* When the sum is significant, clients typically pay with T/T, L/C at sight, Alibaba, and so on.

* Furthermore, an increasing number of consumers will use Alipay or WeChat Pay to make payments.

FAQ

May I get any sample from you?

Re: Yes, of course, we'd like to provide sample to you according to your demands.

What is your MOQ?

Re: Usually our MOQ is 1 kg, but sometimes it is also flexible and depends on different products.

How long I can get my goods after payment?
Re: If shipped by couriers or air, it usually cost 5-10 days.
If shipped by sea, it usually cost 3-40 days, which depends on your destination.

Do you have any after-sales service?

Re: Yes, we will inform you progress of the order, such as product preparation, declaration, transportation follow-up, customs clearance assistance, technical guidance, etc.