3,5,5-Trimethylhexanoic acid

CAS Number

3302-10-1

EC Number

221-975-0

Industries: Lubricants & Metalworking Coatings, Adhesives, Sealants & Elastomers Plastics & Polymers

What is 3,5,5-Trimethylhexanoic acid?

3,5,5-Trimethylhexanoic acid (CAS 3302-10-1) is a branched-chain fatty acid used as a chemical building block. Also marketed as Isononanoic acid and KYOWANOIC N.

Where is 3,5,5-Trimethylhexanoic acid used?

Coatings: synthesis of alkyd resins and metallic driers
Lubricants: esterified to produce synthetic base fluids
Plastics and polymers: precursor to plasticizer esters
Metalworking fluids and automotive system additives: corrosion inhibitor component
In ester synthesis its branched structure improves solubility and low-temperature behaviour.

Good to know: Technical grade is the standard commercial specification.

Commercial specifications

Purity typically 98% or higher
Clear liquid in drums, IBCs and bulk tankers
Documentation supports use in regulated downstream formulations

Other Names (Synonyms)

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What are the physical properties of 3,5,5-Trimethylhexanoic acid?

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℃

How is 3,5,5-Trimethylhexanoic acid classified and handled safely? Learn More

Danger

GHS05· Corrosive GHS07· Irritant

Hazard Statements

H302 Harmful if swallowed

H315 Causes skin irritation

H318 Causes serious eye damage

H319 Causes serious eye irritation

Precautionary Statements

P264 Wash … thoroughly after handling.

P270 Do not eat, drink or smoke when using this product.

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P317 Get emergency medical help.

Which trade and regulatory codes apply to 3,5,5-Trimethylhexanoic acid?

HS Code 2915907098