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161330

Sigma-Aldrich

Cyclobutane-1,2,3,4-tetracarboxylic dianhydride

≥94%

Synonym(s):

1,2,3,4-Cyclobutanetetracarboxylic dianhydride, Cyclobutanetetracarboxylic acid dianhydride, Cyclobutanetetracarboxylic dianhydride, Maleic anhydride cyclic dimer

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About This Item

Empirical Formula (Hill Notation):
C8H4O6
CAS Number:
4415-87-6
Molecular Weight:
196.11
Beilstein/REAXYS Number:
1430553
EC Number:
224-577-5
MDL number:
MFCD00004944
UNSPSC Code:
12352100
PubChem Substance ID:
24849922
NACRES:
NA.22

assay

≥94%

form

solid

mp

>300 °C (lit.)

functional group

anhydride

SMILES string

O=C1OC(=O)C2C1C3C2C(=O)OC3=O

InChI

1S/C8H4O6/c9-5-1-2(6(10)13-5)4-3(1)7(11)14-8(4)12/h1-4H

InChI key

YGYCECQIOXZODZ-UHFFFAOYSA-N

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Application

Cyclobutane-1,2,3,4-tetracarboxylic dianhydride was used to synthesize polyimide films and poly(amic acid) having liquid crystal alignment layers.
Reactant for:
  • Preparation of biologically and pharmacologically active molecules
  • Preparation of photosensitive polyimide material for high performance organic thin-film transistors
  • Selective crosslinking of polyimide for photonic devices

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
SHBJ2709
09896HMV
09896HM
STBB5457
54196EM

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The synthesis and X-ray structure of 1, 2, 3, 4-cyclobutane tetracarboxylic dianhydride and the preparation of a new type of polyimide showing excellent transparency and heat resistance.
Suzuki H, et al.
Journal of Polymer Science: Part A, General Papers, 38(1), 108-116 (2000)
Synthesis and characterization of novel polyimides with 1-octadecyl side chains for liquid crystal alignment layers.
Lee YJ, et al.
Polymers For Advanced Technologies, 18(3), 226-234 (2007)
Mei Zhang et al.
Polymers, 12(7) (2020-07-16)
Transparent polyimides (PI) films with outstanding overall performance are attractive for next generation optoelectronic and microelectronic applications. Semi-alicyclic PIs derived from alicyclic dianhydrides and aromatic diamines have proved effective to prepare transparent PIs with high transmittance. To optimize the combined

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