Decalin
Perhydronaphthalene
Decahydronaphthalin
Bicyclo(4.4.0)decane
C10H18
Molecular mass: 138.25
ICSC # 1548
CAS # 91-17-8
RTECS # QJ3150000
UN # 1147
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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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Flammable.
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NO open flames, NO sparks, and NO smoking.
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Powder, carbon dioxide,
foam
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Explosion
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Above 57°C explosive vapour/air mixtures may be formed.
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Above 57°C use a closed system, ventilation, and explosion-proof electrical equipment.
Prevent build-up of electrostatic charges (e.g., by grounding).
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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.
Sore throat.
Headache.
Dizziness.
Nausea.
Vomiting.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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Redness.
Pain.
Skin burns.
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
Refer for medical attention.
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•Eyes
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Redness.
Pain.
Severe deep burns.
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Face shield,
or eye protection in combination with breathing protection.
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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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Nausea.
Vomiting.
Abdominal pain.
(Further see Inhalation).
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Do NOT induce vomiting.
Give plenty of water to drink.
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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Ventilation.
Collect leaking liquid in sealable containers.
Carefully collect remainder,
then remove to safe place.
Personal protection:
chemical protection suit including self-contained breathing apparatus.
Do NOT let this chemical enter the environment.
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Fireproof.
Separated from oxidants.
Cool.
Keep in the dark.
Well closed to reduce the rate of peroxide formation.
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UN Hazard Class: 3
UN Packing Group: III
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Important Data
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Physical State; Appearance:
COLOURLESS LIQUID
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
As a result of flow, agitation, etc., electrostatic charges can be generated.
Chemical Dangers:
The substance can form explosive peroxides.
On combustion, forms toxic gases.
Reacts with oxidants.
Occupational Exposure Limits:
TLV not established.
MAK not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its vapour.
Inhalation Risk:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance
is corrosive to
the skin and the eyes.The vapour is irritating to the respiratory tract.The substance may cause effects on the central nervous system.If this liquid is swallowed, aspiration into the lungs may result in chemical pneumonitis.
Effects of Long-Term or Repeated Exposure:
Repeated or prolonged contact with skin may cause dermatitis.
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Physical
Properties
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Boiling point: 185-195°C
Melting point: -40°C
Relative density (water = 1): 0.87 - 0.90
Solubility in water, g/100 ml at 25°C:
very poor
Vapour pressure, Pa at 20°C: 127
Relative vapour density (air = 1): 4.8
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Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point:
57°C c.c.
Auto-ignition temperature: 255°C
Explosive limits, vol% in air: 0.7-5.4
Octanol/water partition coefficient as log Pow: 4.6
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Environmental
Data
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The substance is toxic to aquatic organisms.
The substance may cause long-term effects in the aquatic environment.
Bioaccumulation of this chemical may occur in fish.
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N O T E S
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Other melting points: cis-Decahydronaphthalene: -43°C, trans-Decahydronaphthalene: -30°C. Other boiling points: cis-Decahydronaphthalene: 195°C, trans-Decahydronaphthalene: 187°C.
Check for peroxides prior to distillation; eliminate if found.
Transport Emergency Card: TEC (R)-30GF1-III
NFPA Code: H2; F2; R0;
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ADDITIONAL INFORMATION
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ICSC: 1548
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DECAHYDRONAPHTHALENE (cis/trans isomer mixture)
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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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