Cyanobenzene
Benzoic acid nitrile
Phenyl cyanide
C7H5N / C6H5(CN)
Molecular mass: 103.1
ICSC # 1103
CAS # 100-47-0
RTECS # DI2450000
UN # 2224
EC # 608-012-00-3
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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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Combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames.
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Powder, AFFF, foam, carbon dioxide.
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Explosion
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Above 75°C explosive vapour/air mixtures may be formed.
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Above 75°C use a closed system, ventilation.
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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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Confusion.
Headache.
Laboured breathing.
Nausea.
Unconsciousness.
Vomiting.
Weakness.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
Artificial respiration if indicated.
Refer for medical attention.
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•Skin
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Redness.
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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.
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Safety goggles,
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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(Further see Inhalation).
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Rest.
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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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 let this chemical enter the environment.
Chemical protection suit including self-contained breathing apparatus.
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Separated from
food and feedstuffs
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Well closed.
Keep in a well-ventilated room.
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Do not transport with food and feedstuffs.
Xn symbol
R: 21/22
S: 2-23
UN Hazard Class: 6.1
UN Packing Group: II
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Important Data
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Physical State; Appearance:
COLOURLESS LIQUID
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating or
on burning,
producing toxic fumes including hydrogen cyanide, nitrogen oxides.
Reacts
violently with
strong acids
to produce
highly toxic hydrogen cyanide.
Attacks some plastics.
Occupational Exposure Limits:
TLV not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation,
through the skin and
by ingestion.
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
irritates
the eyes,
the skin and
the respiratory tract.
The substance may cause effects on the cellular respiration
, resulting in cyanosis.
The effects may be delayed.
Medical observation is indicated.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: 190.7°C
Melting point: -12.8°C
Relative density (water = 1): 1.0
Solubility in water: poor (0.1-0.5 g/100 ml at 22°C)
Vapour pressure, Pa at 25°C: 102
Relative vapour density (air = 1): 3.6
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Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00
Flash point: 75°C c.c.
Auto-ignition temperature: 550°C
Explosive limits, vol% in air: 1.4-7.2
Octanol/water partition coefficient as log Pow: 1.56
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Environmental
Data
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The substance is harmful to aquatic organisms.
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N O T E S
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Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Transport Emergency Card: TEC (R)-61G61b
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ADDITIONAL INFORMATION
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ICSC: 1103
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BENZONITRILE
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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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