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POTASSIUM PERSULFATE

ICSC: 1133

Peroxydisulfuric acid, dipotassium salt
Potassium peroxydisulfate
K2S2O8
Molecular mass: 270.3
ICSC # 1133 		CAS # 7727-21-1
RTECS # SE0400000
UN # 1492
EC # 016-061-00-1
November 10, 2002 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Not combustible but enhances combustion of other substances. Gives off irritating or toxic fumes (or gases) in a fire.
NO contact with combustibles.
In case of fire in the surroundings: use appropriate extinguishing agent .
EXPLOSION Risk of fire and explosion on contact withcombustible substances.

In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE!

•INHALATION Cough. Wheezing. Sore throat. Laboured breathing.
Local exhaust or breathing protection.
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
•SKIN Redness. Pain.
Protective gloves. Protective clothing.
First rinse with plenty of water, then remove contaminated clothes and rinse again.
•EYES Redness. Pain.
Safety goggles or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION Nausea. Vomiting. Abdominal pain. Diarrhoea.
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Do NOT absorb in saw-dust or other combustible absorbents. Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting. Cautiously neutralize remainder. Wash away remainder with plenty of water. Do NOT let this chemical enter the environment. Personal protection: P2 filter respirator for harmful particles.
Cool. Dry. Well closed. Separated from combustible and reducing substances, strong bases.

O symbol
Xn symbol
R: 8-22-36/37/38-42/43
S: 2-22-24-26-37
UN Hazard Class: 5.1
UN Packing Group: III
ICSC: 1133 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

POTASSIUM PERSULFATE

ICSC: 1133

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
WHITE CRYSTALS

PHYSICAL DANGERS:


CHEMICAL DANGERS:
Heating may cause violent combustion or explosion. The substance decomposes on heating producing toxic fumes including sulfur oxides . The substance is a strong oxidant and reacts with combustible and reducing materials. The solution in water is a medium strong acid. Reacts violently with chlorates and perchlorates in the presence of water causing explosion hazard. Reacts in the presence of water with metals such as aluminium causing fire hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (as persulfate) 0.1 mg/m3 as TWA; (ACGIH 2004).
MAK: sensitization of respiratory tract and skin (Sah); (DFG 2004).


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 on spraying or when dispersed, especially if powdered.

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 with skin may cause dermatitis. Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation exposure may cause asthma. May cause general allergic reaction, like urticaria or shock.

PHYSICAL
PROPERTIES

Decomposes below melting point at <100°C
Density: 2.5
g/cm3
Solubility in water, g/100 ml at 20°C: 5.2

ENVIRONMENTAL
DATA

The substance is harmful to aquatic organisms.

N O T E S

Rinse contaminated clothes (fire hazard) with plenty of water. 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. Anyone who has shown symptoms of asthma due to this substance should avoid all further contact with this substance. Do NOT take working clothes home. Card has been partly updated in April 2005. See section Occupational Exposure Limits.
Transport Emergency Card: TEC (R)-51GO2-I+II+III

ADDITIONAL INFORMATION



ICSC: 1133 POTASSIUM PERSULFATE
(C) IPCS, CEC, 1994
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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