Ethylhexyl isononanoate is a chemical compound, ester of 2-ethyl-hexyl alcohol and a branched-chain nonanoic acid, obtained by the reaction of isonononanoic acid with ethylhexyl alcohol. 

It appears as a fine, white powder with a pH ≈ 5.5

What it is used for and where

Cosmetics

Lipid used in oil/water formulations for the formation of nanoemulsions to improve skin appearance with emollient function able to generate emulsions with viscosity lower than medium chain triglycerides and paraffin with values of 3.09±0.03 Pa-s Emulsifiers have the property to directly influence stability, sensory properties and surface tension of sunscreens, modulating their filmometric performance. Branched chain esters are currently the most interesting alternative to replace silicones in cosmetic formulations.

For more information:

     Ethylhexyl isononanoate studies

Appearance	White powder
Boiling Point	286.8±8.0 °C at 760 mmHg
Flash Point	134.0±9.7°C
Density	0.9±0.1 g/cm3
Vapor Pressure	0.0±0.6 mmHg at 25°C
Index of Refraction	1.439
LogP	6.88
Safety

• Molecular Formula  C₁₇H₃₄O₂
• Molecular Weight     270.5
• Exact Mass   270.255890
• CAS  70969-70-9
• UNII    I6KB4GE3K4
• EC Number   275-073-7
• DSSTox Substance ID  DTXSID60867974
• IUPAC  2-ethylhexyl 3,5,5-trimethylhexanoate
• InChI=1S/C17H34O2/c1-7-9-10-15(8-2)13-19-16(18)11-14(3)12-17(4,5)6/h14-15H,7-13H2,1-6H3 
• InChl Key      LCVHZNSIAYNAGX-UHFFFAOYSA-N
• SMILES   CCCCC(CC)COC(=O)CC(C)CC(C)(C)C
• MDL number  
• PubChem Substance ID    
• SCHEMBL579684     
• RTECS   

Synonyms

• 2-Ethylhexyl 3,5,5-trimethylhexanoate
• 3,5,5-Trimethylhexanoic acid 2-ethylhexyl ester
• 2-ethylhexyl 3,5,5-trimethylhexanoate;hexanoic acid, 3,5,5-trimethyl-, 2-ethylhexyl ester
• Hexanoic acid, 3,5,5-trimethyl-, 2-ethylhexyl ester