Cycloheptane

Formula
C7H14
Structure
Description
A colorless oily liquid.
Uses
Laboratory chemical for organic chemical research.

Registry Numbers and Inventories.
CAS
291-64-5
EC (EINECS/ELINCS)
206-030-2
UN (DOT)
2241
Beilstein/Gmelin
1900279
Beilstein Reference
04-05-00-00092
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
C7H14
Formula mass
98.19
Melting point, °C
-12
Boiling point, °C
120
Vapor pressure, mmHg
20 (25 C)
Vapor density (air=1)
3.3
Critical temperature
328
Critical pressure
37.3
Density
0.8093 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
1.34 cp (25 C)
Surface tension
28.4 g/s2 (16 C)
Refractive index
1.4436 (20 C)
Partition coefficient, pKow
4.0
Heat of vaporization
38.6 kJ/mol
Heat of combustion
-4600 kJ/mol

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. Flammables-area.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Ground and bond containers when transferring material. Do not reuse this container. Avoid contact with eyes, skin, and clothing. Avoid contact with skin and eyes. 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. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition. Provide ventilation.
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
Incompatible with oxidizing materials.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
7
Upper exp. limit, %
7.1
Lower exp. limit, %
1.1
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Water may be ineffective. Material is lighter than water and a fire may be spread by the use of water. May polymerize explosively when involved in a fire. Containers may explode when heated. Runoff to sewer may create fire or explosion hazard. Extinguishing media: Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water. For large fires, use water spray, fog or regular foam. For small fires, use dry chemical, carbon dioxide, water spray or regular foam.
Fire potential
Dangerous, when exposed to heat or flame flammable, dangerous 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
Vapor may travel considerable distance to a source of ignition and flash back.
Health
0
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure effects
Prolonged or repeated skin contact may cause defatting and dermatitis.
   Ingestion
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. Aspiration of material into the lungs may cause chemical pneumonitis, which may be fatal.
   Inhalation
Inhalation of high concentrations may cause central nervous system effects characterized by headache, dizziness, unconsciousness and coma. May cause respiratory tract irritation.
   Skin
May cause skin irritation. Prolonged and/or repeated contact may cause defatting of the skin and dermatitis.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Possible aspiration hazard. 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. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   Skin
Get medical aid if irritation develops or persists. Wash clothing before reuse. Flush skin with plenty of soap and water.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2241
Response guide
Hazard class
3
Packing Group
II
 
USCG CHRIS Code
CYE
 
Std. Transport #
4909317
 
IMO Chemical Code
17
IMO Pollution Category
C
IMO Hazard code
P