Benzenetetrahydride
Hexanaphthylene
Tetrahydrobenzene
C6H10
Molecular mass: 82.14
ICSC # 1054
CAS # 110-83-8
RTECS # GW2500000
UN # 2256
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Highly flammable.
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NO open flames, NO sparks, and NO smoking.
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Powder, water spray, foam, carbon dioxide.
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Explosion
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Vapour/air mixtures are explosive.
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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.
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In case of fire: keep drums, etc., cool by spraying with water.
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Exposure
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PREVENT GENERATION OF MISTS!
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•Inhalation
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Cough.
Drowsiness.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
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•Skin
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Redness.
Dry skin.
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Protective gloves.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
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•Eyes
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Redness.
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Safety spectacles.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Drowsiness.
Laboured breathing.
Nausea.
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Rinse mouth.
Do NOT induce vomiting.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Remove all ignition sources.
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.
Filter respirator for organic gases and vapours.
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Fireproof.
Separated from
strong oxidants.
Cool.
Well closed.
Store only if stabilized.
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UN Hazard Class: 3
UN Packing Group: II
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Important Data
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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.
Occupational Exposure Limits:
TLV: 300 ppm; (as TWA) (ACGIH 1999).
MAK: IIb (not established but data is available) (DFG 2008).
OSHA PEL: TWA 300 ppm (1015 mg/m3)
NIOSH REL: TWA 300 ppm (1015 mg/m3)
NIOSH IDLH: 2000 ppm See: 110838
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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.
The substance may cause effects on the central nervous system.
Effects of Long-Term or Repeated Exposure:
The liquid defats the skin.
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Physical
Properties
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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
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Relative density of the vapour/air-mixture at 20°C (air = 1): 1.16
Flash point:
-6°C c.c.
Auto-ignition temperature: 244°C
Octanol/water partition coefficient as log Pow: 2.86
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Environmental
Data
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N O T E S
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An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert.
Check for peroxides prior to distillation; render harmless if positive.
Transport Emergency Card: TEC (R)-30G30
NFPA Code: H 1; F 3; R 0;
Card has been partially updated in November 2008: see Occupational Exposure Limits.
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ADDITIONAL INFORMATION
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ICSC: 1054
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CYCLOHEXENE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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