Diisononyl phthalate

Diisononyl phthalate (DINP) is a phthalate used as a plasticizer. DINP is typically a mixture of chemical compounds consisting of various isononyl esters of phthalic acid۔

Diisononyl phthalate^[1]

Names
Preferred IUPAC name 1,2-Benzenedicarboxylic acid, di-C8-10 branched alkyl esters, C9 rich
Other names 1,2-Benzenedicarboxylic acid, 1,2-diisononyl ester
Identifiers
CAS Number	28553-12-0 Y 68515-48-0 Y
3D model (JSmol)	Interactive image
Abbreviations	DINP
ChEBI	CHEBI:35459 Y
ChemSpider	513622 Y
ECHA InfoCard	100.044.602
PubChem CID	590836
UNII	4010KIX4CK Y
CompTox Dashboard (EPA)	DTXSID60860420
InChI InChI=1S/C26H42O4/c1-21(2)15-9-5-7-13-19-29-25(27)23-17-11-12-18-24(23)26(28)30-20-14-8-6-10-16-22(3)4/h11-12,17-18,21-22H,5-10,13-16,19-20H2,1-4H3 Y Key: HBGGXOJOCNVPFY-UHFFFAOYSA-N Y InChI=1/C26H42O4/c1-21(2)15-9-5-7-13-19-29-25(27)23-17-11-12-18-24(23)26(28)30-20-14-8-6-10-16-22(3)4/h11-12,17-18,21-22H,5-10,13-16,19-20H2,1-4H3 Key: HBGGXOJOCNVPFY-UHFFFAOYAX
SMILES O=C(OCCCCCCC(C)C)c1ccccc1C(=O)OCCCCCCC(C)C
Properties
Chemical formula	C26H42O4
Molar mass	418.618 g·mol−1
Appearance	Oily viscous liquid
Density	0.98 g/cm3
Melting point	−43 °C (−45 °F; 230 K)
Boiling point	244 to 252 °C (471 to 486 °F; 517 to 525 K) at 0.7 kPa
Solubility in water	<0.01 g/mL at 20 °C
Viscosity	64 to 265 mPa·s
Hazards
Flash point	221 °C (430 °F; 494 K) (c.c.)
Autoignition temperature	380 °C (716 °F; 653 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Use

It is commonly used in a large variety of plastic products including:

• Plasticizer in polyvinyl chloride (PVC)^[2]
• Construction and building material
• Fuel and automotive products
• In electronics materials (as a flexible vinyl additive)^[3]
• As cable insulation additive
• Adhesives and sealants
• Paints and coatings
• Rubber products.

Health issues

The European Union has set a maximum specific migration limit (SML) from food contact materials of 9 mg/kg food for the sum of diisononyl phthalates and diisodecyl phthalates.^[4]

DINP is listed as a substance "known to the State of California to cause cancer" under Proposition 65 legislation.^[5]

Studies find that exposure to environmentally relevant concentrations of DINP in zebrafish disrupt the endocannabinoid system (ECS) and affect reproduction in a gender specific manner,^[6] and have other adverse effects on aquatic organisms, as DINP upregulates orexigenic signals and causes hepatosteatosis together with deregulation of the peripheral ECS and lipid metabolism.^[7]

The ECHA's Risk Assessment Committee (RAC) has concluded, on March 7, 2018, that Di-isononyl phthalate (DINP) does not warrant classification for reprotoxic effects under the EU's Classification, Labelling and Packaging (CLP) regulations.^[8]

Children and childcare products are strictly regulated by regulatory organizations.^[3]

See also

• Diisoheptyl phthalate
• Plastic pollution