Hydrogen rhodanide
HSCN
Molecular mass: 59.1
ICSC # 1671
CAS # 463-56-9
EC # 615-003-00-8
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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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Not combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO contact with acid(s), base(s), oxidants.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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Exposure
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See NOTES.
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•Inhalation
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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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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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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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Do not eat, drink, or smoke during work.
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Rinse mouth.
Give one or two glasses 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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Personal protection: filter respirator for acid gases.
Collect leaking liquid in covered containers.
Carefully collect remainder,
then remove to safe place.
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Separated from
strong oxidants,
strong bases,
food and feedstuffs
Ventilation along the floor.
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Do not transport with food and feedstuffs.
Xn symbol
R: 20/21/22-32-52/53
S: 2-13-61
Signal: Warning
Excl mark-Health haz
Harmful if swallowed
May cause damage to thyroid through prolonged or repeated exposure
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Important Data
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Physical State; Appearance:
COLOURLESS LIQUID
.
Physical Dangers:
The vapour is heavier than air
Chemical Dangers:
The substance polymerizes
due to warming.
The substance decomposes
on heating
producing toxic fumes.
Reacts
violently with
strong bases
and
strong oxidants
producing
toxic fumes
including
hydrogen cyanide
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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
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:
See Notes.
Effects of Long-Term or Repeated Exposure:
The substance may have effects on the
thyroid
, resulting in hypothyroidism.
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Physical
Properties
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Melting point: 5°C
Solubility in water: good
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Relative vapour density (air = 1): 2.0
Octanol/water partition coefficient as log Pow: 0.58 (estimated)
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Environmental
Data
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N O T E S
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Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.
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ADDITIONAL INFORMATION
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ICSC: 1671
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THIOCYANIC ACID
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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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