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Cyclopropyl methyl ketone, 99% - CAS 765-43-5 - Formula C5H8O


Certificate of Analysis

Cyclopropyl methyl ketone, 99%

CAS: 765-43-5 MDL: MFCD00001297  EINECS: 212-146-4
UN#:UN1992Hazard Class:3Packing Group:II
Alternate Name: Acetylcyclopropane


Pricing and Availability

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Chemical Properties

Formula: C5H8O  Flash point: 16°(61°F)
Formula weight: 84.12  Density: 0.898
Melting point: <-70° Refractive Index: 1.4240
Boiling point: 113-114° 

Literature References

Various cyclopropyl ketones have been used in the synthesis of δ-ketonic phosphonium salts which, protected as thioacetals, have found use in the Wittig reaction: Synthesis, 648 (1987):

Other References

Beilstein: 1633817
UN#: UN1992
Harmonized Tariff Code:   2914.29

GHS Hazard and Precautionary Statements

Hazard Statements : H225-H301-H315-H319-H335

Highly flammable liquid and vapour. Toxic if swallowed. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements : P210-P301+P310-P303+P361+P353-P305+P351+P338-P405-P501A

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.


Risk & Safety

Risk Phrases: 11-22-36/37/38
Flammable. Harmful if swallowed. Irritating to eyes, respiratory system and skin.
Safety Phrases: 9-16-23-26-36/37-60
Keep container in a well ventilated place. Keep away from sources of ignition - No Smoking. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing and gloves. This material and/or its container must be disposed of as hazardous waste.
Harmful Highly Flammable
RTECS: KM5648000