Thiocyanic acid, sodium salt
Sodium sulfocyanate
Sodium rhodanide
NaSCN
Molecular mass: 81.1
ICSC # 0675
CAS # 540-72-7
RTECS # XL2275000
EC # 615-004-00-3
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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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Not combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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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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PREVENT DISPERSION OF DUST!
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•Inhalation
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Cough.
Further
see Ingestion.
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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 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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Nausea.
Vomiting.
Diarrhoea.
Weakness.
Confusion.
Convulsions.
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Give a slurry of activated charcoal in 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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Sweep spilled substance into covered containers.
Carefully collect remainder.
Personal protection: P2 filter respirator for harmful particles.
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Separated from
acids,
bases
,
oxidants
,
food and feedstuffs
.
Dry.
Well closed.
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Note: A
Xn symbol
R: 20/21/22-32-52/53
S: 2-13-61
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Important Data
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Physical State; Appearance:
COLOURLESS
HYGROSCOPIC
CRYSTALS
OR WHITE POWDER
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating
producing toxic fumesincludingsulfur oxides,nitrogen oxides, sodium oxide and cyanides.
Reacts
violently with
acids
,
strong bases
and
strong 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 ingestion
and
by inhalation of its aerosol.
Inhalation Risk:
A harmful concentration of airborne particles can be reached quickly when dispersed.
Effects of Short-Term Exposure:
The substance may cause effects on the
central nervous system
, resulting in excitement and convulsions.
Effects of Long-Term or Repeated Exposure:
The substance may have effects on the
central nervous system
and
thyroid
, resulting in
impaired functions
and hypothyroidism.
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Physical
Properties
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Boiling point (decomposes): 368°C
Melting point: about 300°C
Density: 1.7
g/cm3
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Solubility in water, g/100 ml at 21°C: 139
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Environmental
Data
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N O T E S
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ADDITIONAL INFORMATION
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ICSC: 0675
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SODIUM THIOCYANATE
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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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