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ChemicalBook >> CAS DataBase List >>3,3',4,4'-Benzophenonetetracarboxylic dianhydride

3,3',4,4'-Benzophenonetetracarboxylic dianhydride

3,3',4,4'-Benzophenonetetracarboxylic dianhydride Structure
3,3',4,4'-Benzophenonetetracarboxylic dianhydride structure
CAS No.
2421-28-5
Chemical Name:
3,3',4,4'-Benzophenonetetracarboxylic dianhydride
Synonyms
BTDA;NOTAVAILABLE;5,5'-Carbonylbis(isobenzofuran-1,3-dione);4,4'-CARBONYLDIPHTHALIC ANHYDRIDE;Benzophenone-3,3',4,4'-tetracarboxylic dianhydride;Benzophenone-3,3',4,4'-tetracarboxylic dianhydride;3,3',4,4'-Benzophenonetetracarboxylic acid dianhydride;5,5'-Carbonylbis;LABOTEST-BB LT02097910;4,4'-Diphthalic anhydride ketone
CBNumber:
CB5164853
Molecular Formula:
C17H6O7
Molecular Weight:
322.23
MDL Number:
MFCD00005923
MOL File:
2421-28-5.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-07-16 07:06:08
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3,3',4,4'-Benzophenonetetracarboxylic dianhydride Properties

Melting point 218-222 °C (lit.)
Boiling point 320°C 5mm
Density 1,57 g/cm3
vapor density 1.4 (vs air)
vapor pressure <0.1 mm Hg ( 0 °C)
refractive index 1.6380 (estimate)
Flash point 324 °C
storage temp. Inert atmosphere,Room Temperature
solubility DMF: 0.1 g/mL, clear
form Needles or Crystalline Powder
color Off-white to brown
explosive limit 16%
Water Solubility REACTS
Sensitive Moisture Sensitive
λmax 580nm(CH3CN)(lit.)
Sublimation 220-230 ºC
BRN 761777
Stability Hygroscopic
InChI 1S/C17H6O7/c18-13(7-1-3-9-11(5-7)16(21)23-14(9)19)8-2-4-10-12(6-8)17(22)24-15(10)20/h1-6H
InChIKey VQVIHDPBMFABCQ-UHFFFAOYSA-N
SMILES O=C1OC(=O)c2cc(ccc12)C(=O)c3ccc4C(=O)OC(=O)c4c3
LogP 3.3 at 25℃
EWG's Food Scores 4
FDA UNII Y61GVA8097
NIST Chemistry Reference Bis-(3-phthalyl anhydride) ketone(2421-28-5)
EPA Substance Registry System Benzophenonetetracarboxylic dianhydride (2421-28-5)
UNSPSC Code 12162002
NACRES NA.23

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H319-H335
Precautionary statements  P261-P264-P271-P280-P304+P340+P312-P305+P351+P338
target organs Respiratory system
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xi
Risk Statements  36/37
Safety Statements  25
WGK Germany  1
F  21
Autoignition Temperature 975 °F
TSCA  TSCA listed
HS Code  29183000
Storage Class 11 - Combustible Solids
Hazard Classifications Eye Irrit. 2
STOT SE 3
REACH Registrations Active
NFPA 704
1
2 1

3,3',4,4'-Benzophenonetetracarboxylic dianhydride price More Price(48)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 262463 Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride purified by sublimation, 96% 2421-28-5 25g $277 2023-06-20 Buy
TCI Chemical B0948 3,3',4,4'-Benzophenonetetracarboxylic Dianhydride >96.0%(T) 2421-28-5 25g $55 2026-04-30 Buy
TCI Chemical B0948 3,3',4,4'-Benzophenonetetracarboxylic Dianhydride >96.0%(T) 2421-28-5 100g $139 2026-04-30 Buy
TRC TRC-B130390-5G 3,3',4,4'-Benzophenonetetracraboxylic Dianhydride 2421-28-5 5g $91 2026-06-03 Buy
TRC TRC-B130390-1G 3,3',4,4'-Benzophenonetetracraboxylic Dianhydride 2421-28-5 1g $72 2026-06-03 Buy
Product number Packaging Price Buy
262463 25g $277 Buy
B0948 25g $55 Buy
B0948 100g $139 Buy
TRC-B130390-5G 5g $91 Buy
TRC-B130390-1G 1g $72 Buy

3,3',4,4'-Benzophenonetetracarboxylic dianhydride Chemical Properties,Uses,Production

Description

3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA) is used as intermediate and in polycondensation (fiber and powder production) to manufacture plastic products or fine chemicals in the industrial sector. Consumer risk is very unlikely as BTDA is manufactured and handled under closed conditions in industrial settings only. The environmental effects, ecotoxicology and toxicology information available for BTDA is provided based on studies and/or a reliable evaluation of its hazardous properties.

Uses

BTDA is used as intermediate in the manufacture of plastic products or fine chemicals in the industrial sector. 

Physical properties

BTDA is a tan-colored crystalline powder. The substance has a melting point of 218.67 °C and shows decomposition at 360 °C. The auto-ignition temperature is very high and no flammability is observed. The substance has a density of 1.5452 g/ml and a vapor pressure of 6.53E-011 Pa. The substance is slightly water soluble and has a log Pow of 3.3.

Health Hazard

3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA) has no acute toxicity by oral and inhalative route or by dermal exposure. The substance is irritating to eyes and the respiratory tract. BTDA is sensitizing to skin. BTDA is not mutagenic.

Environmental effects

Based on available data for the substance, BTDA is harmful to aquatic organisms with long lasting effects. The substance is not readily biodegradable and is not considered to have potential to bioaccumulate.BTDA is industrially used as monomer to manufacture the rmoplastics or another substance. The manufacture and handling is a closed process, thus only very limited exposure to the environment is expected. Any exposure from manufacture or use will generally be below the level of concern.

Chemical Properties

white crystall powder

Uses

BTDA is important monomer of polyimide, and used for production of polyimide material.

Uses

Used in the synthesis of polyimides.

Uses

3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA) polymer fine free-flowing powder suitable for general purposes. BTDA Microfine Micronized powder facilitates mixing in epoxy resins. BTDA ultrapure high-purity, high-assay powder for critical polyimide synthesis.

Application

3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA) is used for:
(1) Synthesis of polyimides
(2) Preparation of cellulose acetate (AC) hydrogels
(3) Curing epoxy powder coatings
(4) Preparation of nanocomposite films
(5) BTDA-formed polyimide/copolymer as dielectric layer for high-performance OFET memory devices

General Description

Benzophenone-3,3′,4,4′-tetracarboxylic acid is formed by hydrolysis, it can be converted to the dianhydride by treating with Ac2O (molar ratio 4 to 1 of acid).The dianhydride is used to synthesize polyimides, which are highly flexible in nature due to the presence of keto and carbonyl groups in the dianhydride molecule. The keto and carbonyl groups subsequently increase the spacing between the imide rings enhancing the solubility and processibility.

Flammability and Explosibility

Non flammable

Purification Methods

The main impurity is the free acid formed by hydrolysis (check for OH bands in the IR). This can be converted to the dianhydride by treating with Ac2O (molar ratio of 4 to 1 of acid), heating at 110-120o for 1.5 to 2hours, cooling to 0—5o and collecting the dianhydride. This is then dissolved in hot dioxane or Me2CO, filtered and cooled to 10—15o. The moisture sensitive solid is collected and dried at 120—130o in vacuo. It has been sublimed at high vacuum. [Faberov et al. J Org Chem USSR 4 153 (English translation) 1968.]

3,3',4,4'-Benzophenonetetracarboxylic dianhydride synthesis

2479-49-4
2421-28-5
Synthesis of 3,3',4,4'-Benzophenonetetracarboxylic dianhydride from 4,4'-Carbonyldiphthalic acid

3,3',4,4'-Benzophenonetetracarboxylic dianhydride Preparation Products And Raw materials

Raw materials

Acetone

Preparation Products

2-Hydroxyethyl methacrylate

3,3',4,4'-Benzophenonetetracarboxylic dianhydride Suppliers

Global( 457)Suppliers
Supplier Tel Email Country ProdList Advantage
CHINATECH(TIANJIN) CHEMICAL CO.,LTD. 18222205756 sales6@chinatechem.com China 100 58
Chengdu Yuanda chemical co.,ltd 028-85356300 18980937689 chenquanxing@126.com China 159 55
Tianmen Hengchang Chemical Co., Ltd 027-59322316 15172518801 1208480077@qq.com China 9485 58
Heynova (Shanghai) New Material Technology CO., Ltd 17821102608 zoe@heynovachem.com China 211 58
Shanghai Maclean Biochemical Technology Co., LTD 021-50706066 15221275939 shenlinxing@macklin.cn China 29676 58
Zhongshan Dixin Chemical Co., Ltd 0760-1893339-0325 18933390325 274264471@qq.com China 784 58
Hubei Chuanhe Chemical Co., Ltd 187-7130-7593 18672969259 3919539926@qq.com China 2624 58
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
Alfa Aesar 400-6106006 saleschina@alfa-asia.com China 30103 84
Supplier Advantage
CHINATECH(TIANJIN) CHEMICAL CO.,LTD. 58
Chengdu Yuanda chemical co.,ltd 55
Tianmen Hengchang Chemical Co., Ltd 58
Heynova (Shanghai) New Material Technology CO., Ltd 58
Shanghai Maclean Biochemical Technology Co., LTD 58
Zhongshan Dixin Chemical Co., Ltd 58
Hubei Chuanhe Chemical Co., Ltd 58
J & K SCIENTIFIC LTD. 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 62
Alfa Aesar 84

Related articles

Related Questions

Ask a question
Q:What can 3,3',4,4'-Benzophenonetetracarboxylic dianhydride(BTDA) be used for?Layla - Oct 13,2025
A:The primary use of 3,3',4,4'-Benzophenonetetracarboxylic dianhydride is for synthesizing polyimide with primary amines undergoing nucleophilic substitution followed by condensation reactions. This polyimide is used in photocatalytic dye degradation applications such as methylene blue in water. Potentially it can extend its applications to dye-sensitized solar cells (DSSCs) and photocatalytic reactions.

View Lastest Price from 3,3',4,4'-Benzophenonetetracarboxylic dianhydride manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
3,3',4,4'-Benzophenonetetracarboxylic dianhydride pictures 2026-09-12 3,3',4,4'-Benzophenonetetracarboxylic dianhydride
2421-28-5
 $10.00 1ASSAYS 99% 1 ton RongNa Biotechnology Co.,Ltd
3,3',4,4'-Benzophenonetetracarboxylic dianhydride pictures 2026-09-11 3,3',4,4'-Benzophenonetetracarboxylic dianhydride
2421-28-5
 $23.00 1KG 99% 200mt/year Jinan Finer Chemical Co., Ltd
3,3',4,4'-Benzophenonetetracarboxylic dianhydride pictures 2026-09-11 3,3',4,4'-Benzophenonetetracarboxylic dianhydride
2421-28-5
 1KG 98%min 30tons/month WUHAN FORTUNA CHEMICAL CO., LTD

3,3',4,4'-Benzophenonetetracarboxylic dianhydride Spectrum

3,3',4,4'-Benzophenonetetracarboxylic dianhydride(2421-28-5)MS3,3',4,4'-Benzophenonetetracarboxylic dianhydride(2421-28-5)1HNMR3,3',4,4'-Benzophenonetetracarboxylic dianhydride(2421-28-5)IR13,3',4,4'-Benzophenonetetracarboxylic dianhydride(2421-28-5)IR23,3',4,4'-Benzophenonetetracarboxylic dianhydride(2421-28-5)Raman

2421-28-5(3,3',4,4'-Benzophenonetetracarboxylic dianhydride)Related Search:

Benzophenone hydrazone 4,4'-Oxydiphthalic anhydride Succinic anhydride Glutaric anhydride Benzoic anhydride
Trifluoromethanesulfonic anhydride Benzophenone oxime Isatoic Anhydride Benzophenone Maleic anhydride
Phthalic anhydride Methyl 3-formylbenzoate 3-ACETYLBENZOIC ACID 3-BENZOYLBENZOIC ACID 4-Methylbenzophenone
p-Toluic acid 4-Ethylbenzoic acid Acetic anhydride

1of4

1,3-Isobenzofurandione, 5,5'-carbonylbis- 3,3',4,4'-Tetracarboxybenzophenone dianhydride 3,3’,4,4’-benzophenonetetracarboxylicaciddianhydride BENZOPHENONETETRACARBOXYLIC ACID DIANHYDRIDE BENZOPHENONE-TETRACARBOXYLIC-DIANHYDRIDE BTDA~4,4-Carbonyldiphthalic anhydride 3,3',4,4'-BENZOPHENONETETRACARBOXYLIC DI ANHYDRIDE, SUBLIMED, 98% 3,3',4,4'-BENZOPHENONETETRACARBOXYLIC DI 3,3',4,4'-Benzophenonetetracarboxylic dianhydride, 97+% BENZOPHENONE-3,3'',4,4''-TETRACARBOXYLIC DIANHYDRIDE (BTDA) 3,3'',4,4''-BENZOPHENONETETRACARBOXYLIC DIANHYDRIDE 98% 5,5-Carbonylbis(1,3-isobenzofurandione) benzophenone-3,3',4,4'-tetracarboxylic dianhydride 4,4'-carbonyldi(phthalic anhydride) 3,3',4,4'-Benzophenonetetracarboxylic dianhydride ,99.5% 3,3',4,4'-Benzophenonetetracarboxylic dianhydride, 98+% 5-(1,3-Dioxo2-benzofuran-5-carbonyl)-2-benzofuran-1,3-dione 3,3',4,4'-Benzophenonetetracarboxylic dianhydride ,99% 4,4'-Carbonylbis(benzene-1,2-dicarboxylic acid)1,2:1',2'-dianhydride 3,3',4,4'-Benzophenonetetracarboxylic dianhydride,96% 3,3',4,4'-Benzophenonetetracarboxylic dianhydride, reagent grade 4,4'-Carbonyldiphthalic Anhydride (BTDA) 3-Isobenzofurandione,5,5’-carbonylbis-1 4,4'-Carbonylbis[phthalic anhydride] 4,4'-Diphthalic anhydride ketone 5,5’-carbonylbis-3-isobenzofurandione 3,3',4,4'-BENZOPHENONETETRACARBOXYLIC DIANHYDRIDE Benzophenonetetracarboxylic acid anhydride Benzophenonetetracarboxylic anhydride Phthalic anhydride, 4,4'-carbonyldi- LABOTEST-BB LT02097910 3,3',4,4'- twophenyl ketonefourtwo acidanhydride Benzophenone-3,3',4,4'-tetracarboxylic dianhydride 96% 3,3',4,4'-Benzophenonetetracarboxylic Dianhydride (purified by sublimation) 3,3'4,4'-Benzophenonetetracarboxylic dianhydride (BTDA) 3,3',4,4'-Benzophenonetetracarboxylic Dianhydride > 3,3',4,4'-Benzophenonetetracarboxylic Dianhydride (purified by sublimation)> 3,3',4,4'-Benzophenonetetracarboxylic dianhydride, 99.5%, reagent grade 3,3',4,4'-BenzophenonetetracarboxyL 3,3',4,4'-BENZOPHENONETETRACARBOXYLIC DIANHYDRIDE 2421-28-5 3,3',4,4'-Benzophenonetetracarboxylic dianhydride ISO 9001：2015 REACH 3,3',4,4'-Benzophenonetetracraboxylic Dianhydride Factory supply BTDA CAS 2421-28-5 with purity 99% Benzophenon-3,3':4,4'-tetracarbonsaeuredianhydrid 3,3'4,4' -benzophenone tetracarboxylic anhydride Bis-(3-phthalyl anhydride) ketone 3,3 ', 4,4' - Diphenylketone tetraacetic anhydride 3,3',4,4' -diphenylketetracoic anhydride 3,3',4,4'-Benzophenonetetracarboxylicdianhydride 5,5'-Carbonylbis 3,3',4,4'-Benzophenonetetracarboxylic dianhydride(BTDA) 4,4'-CARBONYLBIS(PHTHALIC ANHYDRIDE) 3,3'4,4'-Benzophenonetetracarboxylic dianhydride (s-BTDA) 3,3'',4,4''-Benzophenonetetracarboxylic dianhydride 3,3'',4,4''-Benzophenonetetracarboxylic dianhydride, 10 mM in DMSO Benzophenone-3,3',4,4'-tetracarboxylic dianhydride. 96% 5,5'-carbonylbis(isobenzofuran-1,3-dione)（BTDA） 3,3',4,4'-BENZOPHENONETETRACARBOXYLIC DIANHYDRIDE 98.5-99% 3,3',4,4'-Benzophenonetetracarboxylic acid dianhydride