Methylcyclohexanone

  • 2-Methylcyclohexanone
  • o-Methylcyclohexanone
Formula
2-(CH3)C6H9(=O)
Structure
Description
Colorless to light yellow tinted liquid with a weak, peppermint-like odor.
Uses
Solvent, lacquers.

Registry Numbers and Inventories.
CAS
583-60-8
EC (EINECS/ELINCS)
209-513-6
EC Index Number
606-011-00-2
EC Class
Flammable; Harmful
R 10 20
RTECS
GW1750000
RTECS class
Other
UN (DOT)
2297
Beilstein/Gmelin
506751
Beilstein Reference
4-07-00-00041
Swiss Giftliste 1
G-2447
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C7H12O
Formula mass
112.17
Melting point, °C
-14
Boiling point, °C
163
Vapor pressure, mmHg
1 (25 C)
Vapor density (air=1)
3.86
Saturation Concentration
Approximately 1300 ppm (0.13%) at 20 C (calculated)
Evaporization number
50 (diethyl ether = 1)
Critical temperature
392
Critical pressure
36.3
Density
0.924 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
3.3 cp (20 C)
Surface tension
29.61 g/s2 (45 C)
Refractive index
1.4448 (20 C)
Partition coefficient, pKow
2.0

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Ground and bond containers when transferring material. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Remove all sources of ignition. Provide ventilation. A vapor suppressing foam may be used to reduce vapors. Water spray may reduce vapor but may not prevent ignition in closed spaces.
Disposal code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
48
Lower exp. limit, %
1.2
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Containers may explode when heated. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Use agent most appropriate to extinguish fire. Do NOT use straight streams of water.
Fire potential
Moderate fire risk.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
-
 
Flammability
2
 
 
Reactivity
0
 

Health.
Exposure limit(s)
NIOSH REL: TWA 50 ppm (230 mg/m3) ST 75 ppm (345 mg/m3) [skin] OSHA PEL: TWA 100 ppm (460 mg/m3) [skin] IDLH 600 ppm
Poison_Class
4
Exposure effects
Limited studies have generally documented little or no effect of ketones on reproduction in experimental animals. Human data is lacking. 2,5-Hexanedione has an effect on spermatogenesis in male experimental animals.
   Ingestion
May cause irritation of the digestive tract. May cause liver and kidney damage. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure.
   Inhalation
Causes respiratory tract irritation. May cause liver and kidney damage. May cause drowsiness, unconsciousness, and central nervous system depression. Vapors may cause dizziness or suffocation. Exposure may produce conjunctival irritation, lacrimation, salivation, and lethargy.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
2297
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
MCX
 
HS Code
2914 22 00