Flavors & Fragrances
REACH
Cyclopentanone
CAS Number
120-92-3
EC Number
204-435-9
FEMA Number
FEMA 3910
What is Cyclopentanone?
Cyclopentanone (CAS 120-92-3), also known commercially as adipic ketone and by FEMA 3910, is a cyclic ketone used as a flavoring and fragrance ingredient in food and personal care.
Where is Cyclopentanone used?
- Food flavoring: trace-level background notes in savory, dairy and roasted systems
- Fragrance and personal care: depth in woody and green accords in soaps, lotions and hair care
- It also serves as an intermediate in the synthesis of more complex aroma molecules.
Good to know: Buyers should confirm compliance documentation, including CoA and purity levels, when sourcing for regulated flavor applications.
Commercial specifications
- Flavor-grade quality meeting FEMA and relevant purity specifications for food-contact use
- Clear liquid in drum and IBC quantities
Other Names (Synonyms)
Adipic ketone|Dumasin|Adipin keton|220W81TN3S
What are the physical properties of Cyclopentanone?
Melting Point -51.3 °C
Boiling Point 130.6 °C @ Press: 760 Torr
Density 0.94869 g/cm³ @ Temp: 20 °C
Flash Point 87 °F
Appearance colourless liquid
Color Clear colorless to slightly yellow
Odor Pleasant
Form Liquid
Water Solubility PRACTICALLY INSOLUBLE
Vapor Pressure 11.5 hPa (20 °C)
Refractive Index n 20/D 1.437(lit.)
Log P 0.7 at 25℃
How is Cyclopentanone classified and handled safely? Learn More
Warning
GHS02· Flammable GHS07· Irritant
Hazard Statements
H226 Flammable liquid and vapor
H302 Harmful if swallowed
H315 Causes skin irritation
H319 Causes serious eye irritation
H332 Harmful if inhaled
Precautionary Statements
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.
Which trade and regulatory codes apply to Cyclopentanone?
HS Code 29142990
UN Number 2245
ADR Class 3
Packing Group III
Storage Class 3 - Flammable liquids
WGK (Germany) 1