Peroxydisulfuric acid, disodium salt
Na2S2O8
Molecular mass: 238.1
ICSC # 1136
CAS # 7775-27-1
RTECS # SE0525000
UN # 1505
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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.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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Risk of fire and explosionon contact withcombustible substances andreducing agents.
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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!
STRICT HYGIENE!
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•Inhalation
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Cough.
Laboured breathing.
Sore throat.
Wheezing.
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Local exhaust or breathing protection.
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Fresh air, rest.
Artificial respiration may be needed.
Refer for medical attention.
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•Skin
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Redness.
Pain.
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Protective gloves.
Protective clothing.
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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
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.
Sore throat.
Vomiting.
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Do not eat, drink, or smoke during work.
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Give plenty 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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Sweep spilled substance into containers.
Carefully collect remainder.
Then wash away with plenty of water.
Do NOT absorb in saw-dust or other combustible absorbents.
Personal protection: P2 filter respirator for harmful particles.
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Well closed.
Separated from
combustible and reducing substances,
strong bases,
powdered metals
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UN Hazard Class: 5.1
UN Packing Group: III
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Important Data
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Physical State; Appearance:
WHITE
CRYSTALS
OR POWDER
Physical Dangers:
Chemical Dangers:
The substance is a strong oxidant and reacts with combustible and reducing materials.
The substance decomposes
on heating
producing
toxic and corrosive fumes
including
sulfur oxides
.
Reacts
violently with
powdered metals
and
strong bases
.
The solution in water is a weak acid.
Occupational Exposure Limits:
TLV: (as persulfate) 0.1 mg/m3 as TWA; (ACGIH 2004).
MAK: sensitization of respiratory tract and skin (Sah); (DFG 2004).
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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.
Inhalation of dust may cause asthma-like reactions.
Effects of Long-Term or Repeated Exposure:
Repeated or prolonged contact may cause skin sensitization.
Repeated or prolonged contact with skin may cause dermatitis.
Repeated or prolonged inhalation exposure may cause asthma.
May cause general allergic reaction, like urticaria or shock.
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Physical
Properties
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Decomposes below melting point at 180°C
Density: 1.1
g/cm3
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Solubility in water, g/100 ml at 20°C: 55.6
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Environmental
Data
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N O T E S
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Rinse contaminated clothes (fire hazard) with plenty of water.
Anyone who has shown symptoms of asthma due to this substance should avoid all further contact.
The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential.
Do NOT take working clothes home.
Card has been partly updated in April 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response.
Transport Emergency Card: TEC (R)-51GO2-I+II+III
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ADDITIONAL INFORMATION
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ICSC: 1136
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SODIUM PERSULFATE
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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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