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

3,3',4,4'-Benzophenonetetracarboxylic dianhydride
3,3',4,4'-Benzophenonetetracarboxylic dianhydride structure
CAS No.
2421-28-5
Chemical Name:
3,3',4,4'-Benzophenonetetracarboxylic dianhydride
Synonyms
BTDA;NOTAVAILABLE;LABOTEST-BB LT02097910;4,4'-Diphthalic anhydride ketone;4,4'-CARBONYLDIPHTHALIC ANHYDRIDE;4,4'-Carbonylbis[phthalic anhydride];Phthalic anhydride, 4,4'-carbonyldi-;5,5’-carbonylbis-3-isobenzofurandione;Benzophenonetetracarboxylic anhydride;BTDA~4,4-Carbonyldiphthalic anhydride
CBNumber:
CB5164853
Molecular Formula:
C17H6O7
Formula Weight:
322.23
MOL File:
2421-28-5.mol

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
solubility 
DMF: 0.1 g/mL, clear
form 
Needles or Crystalline Powder
color 
Off-white to brown
explosive limit
16%
Water Solubility 
REACTS
λmax
580nm(CH3CN)(lit.)
Sensitive 
Moisture Sensitive
Sublimation 
220-230 ºC
BRN 
761777
InChIKey
VQVIHDPBMFABCQ-UHFFFAOYSA-N
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)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H319-H335
Precautionary statements  P280i-P304+P340-P501a-P305+P351+P338-P261-P264-P271-P280-P304+P340+P312-P305+P351+P338+P337+P313-P403+P233-P405-P501
Hazard Codes  Xi
Risk Statements  36/37
Safety Statements  25
WGK Germany  1
21
Autoignition Temperature 975 °F
TSCA  Yes
HS Code  29183000
NFPA 704
1
2 1

3,3',4,4'-Benzophenonetetracarboxylic dianhydride price More Price(13)

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 5g $55.4 2018-11-13 Buy
Sigma-Aldrich 262463 Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride purified by sublimation, 96% 2421-28-5 25g $221 2019-12-02 Buy
TCI Chemical B0948 3,3',4,4'-Benzophenonetetracarboxylic Dianhydride >96.0%(T) 2421-28-5 25g $31 2019-12-02 Buy
TCI Chemical B0948 3,3',4,4'-Benzophenonetetracarboxylic Dianhydride >96.0%(T) 2421-28-5 100g $82 2019-12-02 Buy
Alfa Aesar A16529 3,3',4,4'-Benzophenonetetracarboxylic dianhydride, 97+% 2421-28-5 100g $29.2 2019-12-02 Buy

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

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.

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 Preparation Products And Raw materials

Raw materials

Preparation Products


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

Global( 201)Suppliers
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Henan DaKen Chemical CO.,LTD.
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View Lastest Price from 3,3',4,4'-Benzophenonetetracarboxylic dianhydride manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2020-03-20 3,3',4,4'-benzophenonetetracarboxylic dianhydride; Benzophenone-3,3',4,4'-tetracarboxylic dianhydride; 4,4'-Carbonyldiphthalic anhydride; BTDA
2421-28-5
US $0.00 / KG 1KG 99% 10mt Chengdu Yuanda Chemical Co., Ltd
2020-01-02 3,3',4,4'-Benzophenonetetracarboxylic dianhydride
2421-28-5
US $0.10 / KG 1KG 99.0% 1000 tons Shaanxi Dideu Medichem Co. Ltd
2019-08-02 C17H6O7
2421-28-5
US $1.00 / g 1g 99% 3 tons Cangzhou Wanyou New Material Technology Co.,Ltd

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


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