3,3,5-trimethylcyclohexanone

CAS: 873-94-9

Overview

3,3,5-Trimethylcyclohexanone (CAS 873-94-9 ) is a cyclic ketone used in fragrance formulation and as a specialty solvent in personal care applications. Isophorone is its structurally related industrial counterpart.

This compound occupies a distinct niche as a fragrance ingredient with a characteristic woody, camphoraceous odor profile. It functions both as a scent contributor and as a carrier solvent in finished formulations.

In fragrance compounding, it serves as a building block for woody and fresh accords, particularly in fine fragrance and functional fragrance applications such as detergents and fabric care products.

Personal care formulators incorporate it into rinse-off and leave-on products where controlled odor release is required. Its solvent properties support the dissolution of fragrance concentrates.

The material is also used for resinous materials in cosmetic bases. It is also evaluated as a flavoring agent in contexts governed by FEMA -recognized ingredient lists for various applications.

3,3,5-Trimethylcyclohexanone is supplied as a clear liquid in standard drum and intermediate bulk container quantities. Fragrance-grade material is the primary commercial specification for the industry.

Purity levels are typically at 98% or above for standard batches. Smaller pack sizes are available to support laboratory evaluation and pilot-scale formulation work for research and development teams.

Physical Properties

Melting Point	79-81 °C
Boiling Point	189 °C
Density	0.9676 g/cm³ @ Temp: 419.1 °C
Flash Point	150 °F
Appearance	CLEAR COLOURLESS TO VERY SLIGHTLY YELLOW LIQUID
Color	Colorless to Almost colorless
Form	clear liquid
Water Solubility	13 g/L (20 ºC)
Vapor Pressure	60-133.36Pa at 20-30.99℃
Refractive Index	n 20/D 1.445(lit.)
Log P	2.2-2.6 at 25℃

Safety & Handling

Warning GHS07 Hazard Statements H319 Causes serious eye irritation H332 Harmful if inhaled H335 May cause respiratory irritation Precautionary Statements P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P317 Get emergency medical help. P319 Get medical advice/attention if you feel unwell. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code	29142200
Storage Class	10 - Combustible liquids
WGK (Germany)	1

Other Names

Industries

Personal Care & Cosmetics