6-FDA 4,4-Diphthalic Anhydride CAS 1107-00-2

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Products Description

Name: 6-FDA

Cas: 1107-00-2

Purity: 99%min


Basic Info:

CAS No.:






Stock Availability

In stock

Brand Name

Look chem



Product Introduction:

6-FDA, also known as 4,4′-(hexafluoroisopropylidene)diphthalic anhydride, Hexafluorodianhydride, has the chemical formula C19H6F6O6.

White crystal or powder, is one of the six most widely used dianhydride monomers, and is currently the most used dianhydride monomer in colorless and transparent polyimide.

The glass transition temperature of polyimide synthesized by 6-FDA is usually above 300°C, and the mechanical properties and electrical properties are well balanced.

It is still the most representative fluorine-containing polyimide so far.

Product Nature:

  • Density: 1.697 g/cm3
  • Boiling point: 494.5ºC at 760 mmHg
  • Melting point: 244-247 °C (lit.)
  • Flash point: 243.7ºC
  • Water solubility: Miscible with water.
  • BRN: 7057916


Product Name6-FDA Powder
CAS No.1107-00-2
Appearance White crystalline powder
Content99% min
Shelf Life2 years
Packing1kg/bag,25kg/bag or as your requirements

Product Usage:

6-FDA (6FDA) is mainly used in epoxy resin, polyamide resin and polyimide resin.

6-FDA is an organic synthesis intermediate and a pharmaceutical intermediate, which can be used in the laboratory research and development process and the chemical and pharmaceutical synthesis process, mainly as an electronic material polymer.

The hygroscopicity and dielectric constant of the fluorine-containing polyimide synthesized by 4,4-Diphthalic Anhydride are lower than those synthesized by other dianhydrides.

In addition, the fluorine-containing polyimide is soluble and is a necessary dianhydride monomer for producing colorless and transparent polyimide.

Product Performance and Advantages:

Low dielectric constant

  • The dielectric constant of ordinary polyimide is about 3.4, but after adding 6FDA, its dielectric constant can be reduced to 2.5.
  • The low dielectric constant of 6-FDA brings about a reduction in signal delay and loss, which is of great value in electrical applications.

Transparency and controllable refractive index

  • Because polyimide is slightly yellowish or brown, adding 6-FDA can make it transparent.
  • And according to how much 6FDA is added, its refractive index (refractive index) can be controlled. These properties play a great role in the application of optical components.

Chemical and thermal stability

  • After the introduction of fluorine atoms, due to the strong negative charge of fluorine atoms, the chemical and thermal stability of polyimide will be improved, so that the product can work under special chemistry or temperature.


  • Because of the low polarity of fluorine atoms, the fluorine-containing polyimide has low surface free energy, smooth surface and low friction.

Thermal oxidation resistance

  • The fluorine-containing polyimide material synthesized with 6FDA has very good thermal oxidation resistance, high temperature hot melt resistance and radiation resistance, and is the preferred structural material in the aerospace industry.


  1. Diaryl Fluorine Compounds” – US Patent | 1967-03-21.
  2. Research: Soluble Functional (Co)Polyimides – BEILSTEIN | 25 May 2012.
  3. Wikipedia


Pre-Sales Service

* Timely reply and 24 hours online, the professional team will provide you with the most favorable prices and high-quality products.

* The sample supports testing and inspection.

* Each batch of products will be tested to ensure that its quality meets user needs.

*Packaging can also be made according to customer requirements.

*Any inquiries will be answered by our relevant personnel within 24 hours.

*We will provide you with commercial invoice, packing list, packing list, COA, health certificate and certificate of origin if you need it. If your market has other special requirements, please let us know.


After-Sales Service

*We will monitor the logistics information in real time and will share the information with you.

* You can consult us at any time if you have any questions about the product, and we will answer you in time.

*If you have any questions about the product, you can report it to us, we will deal with it in time for you, and the product can be returned.

Look Chemical

As an experienced 6-FDA manufacturer and supplier, Look Chemical is committed to producing and selling high quality products.

We cooperate and trade with 6000+ factories around the world, and our high-quality products and excellent services make us enjoy a high reputation internationally.

If you have a demand for this product, please contact our company’s sales staff, we will provide you with a solution in the shortest time.


1. For products ≤50kg, we recommend using express delivery, which is usually called DDU service (discounted, convenient).

2. For products ≤500kg, we generally recommend air freight, which is usually called FOB, CFR or CIF service (fast and efficient).

3. For products >500kg, we generally recommend shipping by sea, which is usually called FOB, CFR or CIF service (economical, safe).

4. For high-value products, please choose air or express to ensure the safety of product transportation.


Do you accept sample order?

We will make samples before mass production. After the samples are approved by the department and users, we will start mass production. During the production process, we will carry out 100% inspection, and then carry out random inspection before packaging.

How to confirm whether the product quality meets our needs before placing an order?

You can consult us to get free samples of some products, you only need to pay the freight or arrange express delivery to us and get the samples. You can send us the product specifications and requirements you need, and we will manufacture products according to your requirements.

What’s your MOQ?

Our MOQ is 1kg. But usually we can also accept a smaller quantity, such as 100g, if you need it, provided that the sample fee is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.

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4,4 - Diphthalic Anhydride