Potassium hyperchlorate
Perchloric acid, potassium salt
Peroidin
KClO4
Molecular mass: 138.5
ICSC # 0714
CAS # 7778-74-7
RTECS # SC9700000
UN # 1489
EC # 017-008-00-5
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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.
Many reactions may cause fire or explosion.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames, NO sparks, and NO smoking.
NO contact with flammable substances.
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In case of fire in the surroundings:
water in large amounts, water spray
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Explosion
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Do NOT expose to friction or shock.
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In case of fire: keep drums, etc., cool by spraying with water.
Combat fire from a sheltered position.
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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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Local exhaust or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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Redness.
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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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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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Do not eat, drink, or smoke during work.
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Rinse mouth.
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.
Wash away remainder with plenty of water.
Do NOT absorb in saw-dust or other combustible absorbents.
(Extra personal protection: P2 filter respirator for harmful particles).
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Separated from
combustible and reducing substances.
See Chemical Dangers.
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O symbol
Xn symbol
R: 9-22
S: 2-13-22-27
UN Hazard Class: 5.1
UN Packing Group: II
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Important Data
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Physical State; Appearance:
COLOURLESS
CRYSTALS
OR
WHITE
CRYSTALLINE POWDER
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating
producing
toxic and corrosive fumes
(chlorine, chloroxides).
The substance is a strong oxidant and reacts with combustible and reducing materials
, causing fire and 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.
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:
The substance may have effects on the
blood
, resulting in
formation of methaemoglobin.
(See Notes).
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Physical
Properties
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Melting point (decomposes): 400°C
Density: 2.5
g/cm3
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Solubility in water, g/100 ml at 20°C: 1.8
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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 substances.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Rinse contaminated clothes (fire hazard) with plenty of water.
Depending on the degree of exposure, periodic medical examination is indicated.
Transport Emergency Card: TEC (R)-51S1489
NFPA Code: H 1; F 0; R 2; ox
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ADDITIONAL INFORMATION
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ICSC: 0714
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POTASSIUM PERCHLORATE
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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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