CYCLOHEXENE

International Chemical Safety Cards

CYCLOHEXENE

ICSC: 1054

CYCLOHEXENE
Benzenetetrahydride
Hexanaphthylene
Tetrahydrobenzene
C₆H₁₀
Molecular mass: 82.14
CAS # 110-83-8
RTECS # GW2500000
ICSC # 1054
UN # 2256

TYPES OF HAZARD/ EXPOSURE	ACUTE HAZARDS/ SYMPTOMS	PREVENTION	FIRST AID/ FIRE FIGHTING
FIRE	Highly flammable.	NO open flames, NO sparks, and NO smoking.	Powder, AFFF, foam, carbon dioxide.
EXPLOSION	Vapour/air mixtures are explosive.	Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding). Do NOT use compressed air for filling, discharging, or handling. Use non-sparking handtools.	In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE		PREVENT GENERATION OF MISTS!
INHALATION	Cough.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest.
SKIN	Redness.	Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
EYES	Redness.	Safety spectacles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
INGESTION	Drowsiness. Laboured breathing. Nausea.		Rinse mouth. Do NOT induce vomiting. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer.

Fireproof. Separated from strong oxidants. Cool. Keep in the dark. Well closed. Store only if stabilized.

UN Hazard Class: 3
UN Packing Group: II

SEE IMPORTANT INFORMATION ON BACK

ICSC: 1054

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

CYCLOHEXENE

ICSC: 1054

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PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air and may travel along the ground; distant ignition possible. As a result of flow, agitation, etc., electrostatic charges can be generated.

CHEMICAL DANGERS:
The substance can form explosive peroxides. The substance may polymerize under certain conditions. Reacts with strong oxidants causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV: 300 ppm; 1010 mg/m³ (as TWA) (ACGIH 1992-1993).

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation and by ingestion.

INHALATION RISK:
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes, the skin and the respiratory tract. Swallowing the liquid may cause aspiration into the lungs with the risk of chemical pneumonitis.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 83°C
Melting point: -104°C
Relative density (water = 1): 0.81
Solubility in water: none
Vapour pressure, kPa at 20°C: 8.9
Relative vapour density (air = 1): 2.8

Relative density of the vapour/air-mixture at 20°C (air = 1): 1.16
Flash point: -6°C (c.c.)°C
Auto-ignition temperature: 310°C
Explosive limits, vol% in air: 1.2-4.8 (at 100°C)
Octanol/water partition coefficient as log Pow: 2.86