Sodium persulfate

  • Sodium peroxidisulfate
  • Disodium peroxidisulfate
Formula
Na2O8S2
Structure
Description
A white crystalline solid.
Uses
Bleaching and oxidizing agent.

Registry Numbers and Inventories.
CAS
7775-27-1
EC (EINECS/ELINCS)
231-892-1
R 8 22 42/43
S 17 22 26 45
RTECS
SE0525000
RTECS class
Other
UN (DOT)
1505
Merck
12,8801
Beilstein/Gmelin
53252 (G)
EPA OPP
63603
Swiss Giftliste 1
G-2609
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
Na2O5S
Formula mass
238.09
Melting point, °C
100
Vapor density (air=1)
8
Density
2.400 g/cm3 (20 C)
Solubility in water
Soluble

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Do not store near combustible materials. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Remove all sources of ignition.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong reducing agents, strong bases, alcohols, finely powdered metals.
Decomposition
Oxides of sulfur, sodium oxide.

Fire.
Flash Point,°C
180
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Strong oxidizer. Contact with combustible materials may cause a fire. Use water with caution and in flooding amounts. Extinguishing media: Use water only! Contact professional fire-fighters immediately.
Fire potential
Not combustible, but substance is a strong oxidizer and its heatof reaction with reducing agents or combustibles may causeignition. Heating or contact with water releases oxygen which mayintensify combustion in an existing fire.
Hazards
These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
0
 
 
Reactivity
1
 
 
Special
O

Health.
Exposure limit(s)
ACGIH Threshold Limit Value (TLV): 0.1 mg/m3 (TWA), Persulfates, Sodium
Poison_Class
4
Exposure effects
Repeated or prolonged exposure may cause allergic reactions in sensitive individuals.
   Ingestion
May cause irritation of the digestive tract. May be harmful if swallowed.
   Inhalation
Causes respiratory tract irritation.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1505
Response guide
Hazard class
5.1
Packing Group
III
 
Std. Transport #
4918748