Sodium monoiodide
NaI
Molecular mass: 149.9
ICSC # 1009
CAS # 7681-82-5
RTECS # WB6475000
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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!
AVOID Exposure OF (PREGNANT) WOMEN!
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•Inhalation
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Cough.
Sore throat.
Headache.
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Ventilation (not if powder), local exhaust, or breathing protection.
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Fresh air, rest.
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•Skin
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Redness.
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Protective gloves.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
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•Eyes
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Redness.
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Safety goggles
or
eye protection in combination with breathing protection if powder.
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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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Diarrhoea.
Nausea.
Vomiting.
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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: P1 filter respirator for inert particles.
Sweep spilled substance into containers.
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Separated from strong oxidants, food and feedstuffs.
Dry.
Well closed.
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Important Data
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Physical State; Appearance:
COLOURLESS
TO WHITE
HYGROSCOPIC
CRYSTALS
OR WHITE POWDER
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TURNS BROWN ON Exposure TO AIR.
Physical Dangers:
Chemical Dangers:
Reacts violently with strong oxidants to produce iodine fumes.
Occupational Exposure Limits:
TLV: (Iodides, inhalable fraction & vapour) 0.01 ppm as TWA A4 (not classifiable as a human carcinogen); (ACGIH 2008).
MAK not established.
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Routes of Exposure:
The substance can be absorbed into the body
by ingestion.
Inhalation Risk:
A harmful concentration of airborne particles can be reached quickly especially if powdered.
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes
,
the skin
and
the respiratory tract.
Effects of Long-Term or Repeated Exposure:
If ingested:
the substance may have effects on the
thyroid
and
may cause systemic sensitization. See Notes.
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Physical
Properties
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Boiling point: 1304°C
Melting point: 660°C
Density: 3.67
g/cm3
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Solubility in water, g/100 ml at 25°C: 184
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Environmental
Data
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N O T E S
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Health effects apply also to Sodium iodide dihydrate CAS 13517-06-1. Symptoms of systemic sensitization may include airway obstruction and various skin reactions or even anaphylactic shock. Exposure during pregnancy may affect the thyroid function of the newborn.
Card has been partially updated in November 2008: see Occupational Exposure Limits, Ingestion First Aid.
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ADDITIONAL INFORMATION
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ICSC: 1009
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SODIUM IODIDE (ANHYDROUS)
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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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