Chlorous acid, sodium salt
NaClO2
Molecular mass: 90.44
ICSC # 1045
CAS # 7758-19-2
RTECS # VZ4800000
UN # 1496
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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 but enhances combustion of other substances.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO contact with
combustibles
and
reducing agents
.
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Water in large amounts, water spray.
NO carbon dioxide.
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Explosion
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Risk of fire and explosion
on contact with
reducing agents
and organic matter.
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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 DISPERSION OF DUST!
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•Inhalation
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Cough.
Sore throat.
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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.
Pain.
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Protective gloves.
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First rinse with plenty of water, then remove contaminated clothes and rinse again.
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•Eyes
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Redness.
Pain.
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Safety goggles.
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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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Abdominal pain.
Vomiting.
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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Rinse mouth.
Induce vomiting (ONLY IN CONSCIOUS PERSONS!).
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 sealable containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
Do NOT absorb in saw-dust or other combustible absorbents.
(Extra personal protection: P3 filter respirator for toxic particles).
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Separated from
combustible and reducing substances,
acids,
and other
incompatible materials
.
See Chemical Dangers.
Cool.
Dry.
Keep in a well-ventilated room.
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UN Hazard Class: 5.1
UN Packing Group: II
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Important Data
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Physical State; Appearance:
SLIGHTLY
HYGROSCOPIC
,
WHITE
CRYSTALS
OR FLAKES
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating to 200°C,
producing
toxic and corrosive fumes
, causing fire and explosion hazard.
The substance is a strong oxidant and reacts violently with combustible and reducing materials.
Reacts violently with acids, ammonium compounds, phosphorus, sulfur, sodium dithionate,
causing explosion hazard.
Occupational Exposure Limits:
TLV not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol
and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered.
Effects of Short-Term Exposure:
The substance
irritates
the eyes,
the skin and
the respiratory tract.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Decomposes below melting point at 180-200°C
Density: 2.5
g/cm3
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Solubility in water, g/100 ml at 17°C: 39
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Environmental
Data
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N O T E S
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Will turn shock-sensitive if contaminated with organic matter.
Rinse contaminated clothes (fire hazard) with plenty of water.
Textone is a trade name.
Transport Emergency Card: TEC (R)-209 or 51G02
NFPA Code: H1; F0; R1; OX
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ADDITIONAL INFORMATION
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ICSC: 1045
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SODIUM CHLORITE
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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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