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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 28813Generated: November 4, 2026

Butyl isobutyl phthalate

butyl isobutyl phthalate · n-Butyl iso-butyl phthalate · Butyl-2-methylpropylphthalate · 1-Butyl-2-isobutyl Phthalic acid · Phthalic Acid Butyl Isobutyl Ester · Phthalic acid 1-butyl 2-isobutyl ester · Butyl isobutyl phthalate, 10 mM in DMSO · n-Butyl isobutyl phthalate in isooctane

https://huagongshe.com/en/chemical/28813

Butyl isobutyl phthalate molecular structure

Identifiers & Physical Properties

CAS No.17851-53-5
Molecular formulaC16H22O4
Average molar mass278.34 g/mol
Monoisotopic mass278.15180918 g/mol
SMILESCCCCOC(=O)c1ccccc1C(=O)OCC(C)C
InChIKeyUVIVWIFUPKGWGF-UHFFFAOYSA-N
PubChem CID28813
ChEMBLCHEMBL4071043
EC No.241-802-2
DTXSIDDTXSID80170497

Chemical & Physical Properties

XLogP4.8
Topological polar surface area52.6
Hydrogen bond donors0
Hydrogen bond acceptors4
Rotatable bonds9
Heavy atoms20
Formal charge0
Complexity312
Chemical classesPhthalate
PolymersPlastics & Rubber -> Phthalate Esters
Endocrine DisruptorsPotential endocrine disrupting compound
Boiling point315.7±10.0 °C(Predicted)
Density1.051±0.06 g/cm3(Predicted)
Storage conditionsSealed in dry,Room Temperature
SolubilityChloroform (Slightly), Ethyl Acetate (Slightly)
Physical stateOil
ColorColourless
InChIInChI=1S/C16H22O4/c1-4-5-10-19-15(17)13-8-6-7-9-14(13)16(18)20-11-12(2)3/h6-9,12H,4-5,10-11H2,1-3H3
InChIKeyUVIVWIFUPKGWGF-UHFFFAOYSA-N
SMILESC1(C(OCCCC)=O)=CC=CC=C1C(OCC(C)C)=O
FDA UNIIZFJ3BJ8E4K
GHS pictogramGHS05,GHS07,GHS02
Signal wordDanger
GHS hazard statementsH302+H312+H332-H314-H261
GHS precautionary statementsP501-P260-P270-P231+P232-P271-P264-P280-P370+P378-P362+P364-P303+P361+P353-P301+P330+P331-P301+P312+P330-P304+P340+P310-P305+P351+P338+P310-P402+P404-P405

Safety & Regulations

GHS classificationDangerH335 (50%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposureRespiratory tract irritation]P203, P261, P271, P273, P280, P304+P340, P318, P319, P391, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 2 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazards summarySee PHTHALATE ESTERS.
Hazard Classes and CategoriesSTOT SE 3 (50%)
Signal wordDanger
GHS pictogramGHS05,GHS07,GHS02
GHS hazard statementsH302+H312+H332-H314-H261
GHS precautionary statementsP501-P260-P270-P231+P232-P271-P264-P280-P370+P378-P362+P364-P303+P361+P353-P301+P330+P331-P301+P312+P330-P304+P340+P310-P305+P351+P338+P310-P402+P404-P405

Applications & Uses

Uses

Butyl Isobutyl Phthalate, is a volatile constituent of the ligarine extracts of twig, leaf and root of Clerodendrum inerme, having antioxidant properties.