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B9750

Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride

98%

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Synonym(s):

4,4′-Carbonyldiphthalic anhydride

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100 g

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$56.60
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About This Item

Empirical Formula (Hill Notation):
C17H6O7
CAS Number:
2421-28-5
Molecular Weight:
322.23
UNSPSC Code:
12162002
NACRES:
NA.23
PubChem Substance ID:
24892154
EC Number:
219-348-1
Beilstein/REAXYS Number:
761777
MDL number:
MFCD00005923

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vapor density

1.4 (vs air)

Quality Segment

200

vapor pressure

<0.1 mmHg ( 0 °C)

assay

98%

form

powder

autoignition temp.

975 °F

expl. lim.

16 %

mp

218-222 °C (lit.)

SMILES string

O=C1OC(=O)c2cc(ccc12)C(=O)c3ccc4C(=O)OC(=O)c4c3

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

InChI key

VQVIHDPBMFABCQ-UHFFFAOYSA-N

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.

Application

Used in the synthesis of polyimides.

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This Item
674605586919382426
Benzophenone-3,3&#8242;,4,4&#8242;-tetracarboxylic dianhydride 98%

Sigma-Aldrich

B9750

Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride

(R)-3,3&#8242;-Bis[3,5-bis(trifluoromethyl)phenyl]-1,1&#8242;-binaphthyl-2,2&#8242;-diyl hydrogenphosphate 95%

Sigma-Aldrich

674605

(R)-3,3′-Bis[3,5-bis(trifluoromethyl)phenyl]-1,1′-binaphthyl-2,2′-diyl hydrogenphosphate

Benzophenone-&#945;-13C-3,3&#8242;,4,4&#8242;-tetracarboxylic dianhydride 99 atom % 13C

Sigma-Aldrich

586919

Benzophenone-α-13C-3,3′,4,4′-tetracarboxylic dianhydride

(R)-(+)-1,1&#8242;-Binaphthyl-2,2&#8242;-diamine 99%

Sigma-Aldrich

382426

(R)-(+)-1,1′-Binaphthyl-2,2′-diamine

description

98%

description

95%

description

99 atom % 13C

description

99%

assay

98%

assay

95%

assay

-

assay

99%

mp

218-222 °C (lit.)

mp

162-175 °C

mp

224-226 °C (lit.)

mp

242-244 °C (lit.)

form

powder

form

solid

form

solid

form

-

vapor density

1.4 (vs air)

vapor density

-

vapor density

-

vapor density

-

vapor pressure

<0.1 mmHg ( 0 °C)

vapor pressure

-

vapor pressure

-

vapor pressure

-

expl. lim.

16 %

expl. lim.

-

expl. lim.

-

expl. lim.

-

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H319,H335

Hazard Classifications

Eye Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 1

ppe

dust mask type N95 (US), Eyeshields, Gloves

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    Certificates of Analysis (COA)

    Lot/Batch Number
    07509BH
    MKCX3687
    MKCZ5449
    MKCZ8313
    0000530005

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    Questions

    1–2 of 2 Questions  

    1. How can I determine the shelf life / expiration / retest date of this product?

      1 answer

      1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
        For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
        For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
        For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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    2. How is shipping temperature determined? And how is it related to the product storage temperature?

      1 answer

      1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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