Isononanoic acid
CAS 3302-10-1
EC 221-975-0
Formula C9H18O2
MW 158.24 g/mol
Organic Acids Lubricants & MetalworkingCoatings, Adhesives, Sealants & ElastomersAutomotivePlastics & Polymers Plasticizer & SoftenerLubricationCorrosion Inhibition
Description
Isononanoic acid (CAS 3302-10-1) is a branched-chain C9 carboxylic acid, also known by the abbreviation TMHA and trade names including Kyowanoic N. It carries no E-code designation and is not classified as a food additive. It is registered under REACH and assigned EC number 221-975-0.
In lubricant and metalworking formulations, isononanoic acid functions as a corrosion inhibitor by forming a protective layer on metal surfaces, and as a lubricity additive through its polar carboxyl group. In coatings and plastics, it serves as a building block for ester-based plasticizers and synthetic lubricant esters, improving flexibility and low-temperature performance in polymer matrices.
Isononanoic acid is supplied as a technical-grade clear liquid, compliant with REACH registration requirements. Standard packaging includes intermediate bulk containers and drums. Buyers should confirm purity specifications and acid value with the supplier prior to formulation use.
In lubricant and metalworking formulations, isononanoic acid functions as a corrosion inhibitor by forming a protective layer on metal surfaces, and as a lubricity additive through its polar carboxyl group. In coatings and plastics, it serves as a building block for ester-based plasticizers and synthetic lubricant esters, improving flexibility and low-temperature performance in polymer matrices.
Isononanoic acid is supplied as a technical-grade clear liquid, compliant with REACH registration requirements. Standard packaging includes intermediate bulk containers and drums. Buyers should confirm purity specifications and acid value with the supplier prior to formulation use.
Physical Properties
| Melting Point | -70°C |
| Boiling Point | 103-104 °C @ Press: 6 Torr |
| Density | 0.91 g/cm³ (liquid) |
| Flash Point | 125°C |
| Appearance | colourless liquid |
| Color | Colorless to Almost colorless |
| Form | clear liquid |
| Water Solubility | 700mg/L at 20℃ |
| Vapor Pressure | 0.46Pa at 20℃ |
| Refractive Index | 1.4278-1.4298 |
| Log P | 3.2 at 25℃ |
Safety & Handling (Learn More)
Danger GHS05 GHS07
H
H302H315H318H319
P
P264P270P280P317P321P330P501P264+P265P301+P317P302+P352P332+P317P337+P317P362+P364P305+P351+P338P305+P354+P338
Trade & Regulatory
| HS Code | 2915907098 |
Other Names
3,5,5-trimethylhexanoic acidTMHAIsononansreKyowanoic NTIMTEC-BB SBB005782RARECHEM AL BE 01973,5,5-Trimethylcaproic acid3,5,5-trimethyl-hexanoicaci
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