3,3',4,4'-Benzophenonetetracarboxylic Dianhydride (BTDA) CAS 2421-28-5 Supplier & Manufacturer

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Sinimide® AN-BTDA

3,3',4,4'-Benzophenonetetracarboxylic dianhydride (CAS 2421-28-5)

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Sinimide® AN-BTDA

(Benzophenone Tetracarboxylic Dianhydride, High Purity Polyimide Monomer)


Chemical Name: 3,3',4,4'-Benzophenonetetracarboxylic dianhydride

CAS No.: 2421-28-5

MF: C17H6O7    

MW: 322.23

Molecular structure：


General Information :

Sinimide® AN-BTDA (3,3',4,4'-Benzophenonetetracarboxylic Dianhydride) is a high-purity aromatic dianhydride monomer used in the synthesis of polyimides, polyamide-imides, and polyesters. It offers excellent thermal stability, high reactivity, and good processability. Available in multiple purity grades (98.0%–99.8%) with low metal content for electronic-grade applications. Ideal for polyimide films, high-temperature adhesives, aerospace composites, and optoelectronic devices.


Standard :

Item

   Specification

Appearance

   Off-white to white powder

Purity(HPLC)

   ≥98.0%   

      ≥ 99.0%

  ≥ 99.5%

 ≥ 99.8%

BTA

   ≤ 1.2%

      ≤ 1.2%

  ≤ 1.2%

 ≤ 0.2%

Melting point

    /

      ≥ 224℃

  ≥ 224℃

 ≥ 224℃

Metal Testing

    /  

Single metal ≤ 1ppm

Single metal ≤ 1ppm

 Single metal ≤ 1ppm

YI

    / 

       / 

   /

 ≤  5


Applications :

Used in polyimide films, high-temperature adhesives, aerospace composites, and optoelectronic devices, etc.


Packaging & Storage :

Packaging: 20kgs/drum.

 

Storage:

Being kept in dry, clean warehouse with well ventilation.

Avoid exposing to light and heating.   

Protecting the product from leakage, rain and insolation during transportation.


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    132.16

  • Package :

    200kg/drum, 25KGs/drum

Sinamine® MDA

Other Catalysts And Additives

Sinamine® MDA is used to produce insulating materials, dyes, diisocyanates, polyurethane rubber, H-grade adhesives,

  • Chemical Name :

    MDA;DDM;4,4'-Methylenedianiline

  • Formula :

    C13H14N2

  • Cas No. :

    101-77-9

  • Package :

    25 KG /BAG

Sinamine® DGA

Other Catalysts And Additives

Sinamine® DGA is a primary amine and is especially recommended for use in metalworking fluids and can be substituted for diethanolamine.

  • Other name:

    2-(2-Aminoethoxy)ethanol;Diethylene glycolamine

  • Cas No.:

    929-06-6

  • Molecular formula :

    C4H11NO2

  • Molecular weight :

    105.14

  • Package :

    200kg drum、IBC tote、ISO tank、Flexitank

Sinaint® Trimesic acid

Other Catalysts And Additives

Trimellitic acid is an important chemical intermediate, 

  • Other name :

    Trimesic acid

  • Cas No. :

    554-95-0

  • Molecular formula :

    C9H6O6

  • Molecular weight :

    210.14

  • Package :

    25KGs/drum

Sinaint® TMP

Other Catalysts And Additives

SINAINT® TMP- 3 typical methylol groups on its molecule, so it has the properties of polyol similar to glycerol, 

  • Chemical name :

    Trimethylolpropane

  • Cas No. :

    77-99-6

  • Molecular formula :

    C6H14O3

  • Molecular weight :

    134.17

  • Package :

    25kgs,50kg,500kgs,1000kgs/ PE& PP Bag

Sinaint® Phenolphthalein

Other Catalysts And Additives

SINAINT® Phenolphthalein is a weak organic acid. It is white or slightly yellow fine crystals at room temperature.

  • Other name :

    Phenolphthalein

  • Cas No. :

    77-09-8

  • Molecular formula :

    C20H14O4

  • Molecular weight :

    318.32

  • Package :

    25KGs/drum

Sinaint® CYC 99.3%

Other Catalysts And Additives

SINAINT® CYC is an important fine chemical product with a wide range of uses. 

  • Chemical name :

    Cyanuric chloride

  • Cas No. :

    108-77-0

  • Molecular formula :

    C3Cl3N3

  • Molecular weight :

    184.41

  • Package :

    25kgs,50kg,500kgs,1000kgs/ PE& PP Bag

  • :

Sinaint® Chromotropic acid disodium salt dihydrate

Other Catalysts And Additives

Disodium chromotropic acid is white to gray, beige to light brown powder, 

  • Other name :

    Chromotropic acid disodium salt dihydrate

  • Cas No. :

    5808-22-0

  • Molecular formula :

    C10H10Na2O10S2

  • Molecular weight :

    400.29

  • Package :

    25kgs/bag

Sasolate® NMMO

Other Catalysts And Additives

SASOLATE®NMMO is a kind of advanced tertiary amine oxide, which can be miscible with common organic solvents. It is used for wet spinning of regenerated cellulose fiber-Lyocell fiber

  • Other name :

    4-Methylmorpholine N-oxide

  • Cas No. :

    7529-22-8

  • Molecular formula :

    C5H11NO2

  • Molecular weight :

    117.15

  • Package :

    220kgs/drum

Sasolate® D5

Other Catalysts And Additives

SASOLATE® D5 is a cyclosiloxane material with good volatility and solubility, colorless, odorless, non-irritating, good spreadability, easy to apply, 

  • Chemical name :

    Decamethylcyclopentasiloxane

  • Cas No. :

    541-02-6

  • Molecular formula :

    C10H30O5Si5

  • Molecular weight :

    370.77

  • Package :

    190kgs/drum

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