Lot numbers can be found on the outside label of a product:
Diisobutyl terephthalate
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CAS No. 18699-48-4
- Cat. No. CS-0160333
- Purity≥97%
- MDL No.MFCD01682719
*For research and further manufacturing use only, not for direct human use.
Structure of 18699-48-4
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General Information
- CAS No. 18699-48-4
- Cat. No. CS-0160333
- Purity ≥97%
- MDL No. MFCD01682719
- Storage Store at room temperature
- Shipping Room temperature in continental US; may vary elsewhere.
- Molecular Formula C₁₆H₂₂O₄
- Molecular Weight 278.34
- Synonym(s) bis(2-methylpropyl) benzene-1,4-dicarboxylate
- SMILES O=C(OCC(C)C)C1=CC=C(C(OCC(C)C)=O)C=C1
Description
Diisobutyl terephthalate serves as a stable, low-viscosity ester plasticizer with excellent thermal and oxidative resistance. This aromatic diester integrates into polymer matrices to enhance flexibility without compromising clarity or adhesion. Its branched alkyl chains reduce crystallinity, enabling broad compatibility in polyvinyl chloride, cellulose acetate, and other resin systems under standard processing conditions.
Application
Diisobutyl terephthalate serves as a stable, bench-friendly diester building block for the synthesis of polyesters and functionalized aromatic intermediates. Its isobutyl ester groups offer improved solubility and reduced volatility compared to simpler alkyl analogs, facilitating handling in large-scale reactions. The terephthalate core enables efficient incorporation into polymer backbones and serves as a versatile scaffold for downstream transformations via hydrolysis or transesterification.
Synthesis
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References
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Eastman Chemical Company Patent: US7361779 B1, 2008 ; Location in patent: Page/Page column 3; 4; 5; 6 ;
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Route2
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In-stock
120-61-6 -
78-83-1 - ~%
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In-stock
18699-48-4
References
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Pfannl Monatshefte fuer Chemie, 1911 , vol. 32, p. 513
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Route3
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78-83-1
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68-36-0 - ~%
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In-stock
18699-48-4
References
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Dow Chem. Co. Patent: US2871256 , 1956 ;
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Safety Information
Download SDS|
GHS Pictogram :
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GHS No : GHS07
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Signal Word : Warning
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UN#: N/A
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Class : N/A
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Packing Group : N/A
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Hazard Statements : H302-H315-H319-H335
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Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501
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Quality Control
Computational Chemistry Data
- TPSA 52.6
- LogP 3.3122
- H_Acceptors 4
- H_Donors 0
- Rotatable_Bonds 6
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