Product Identification

Product Name

Sodium peroxydisulfate

Synonyms

Disodium peroxidisulfate
Disodium sulfonatooxy sulfate
Sodium peroxidisulfate

CAS

7775-27-1

Formula

Na2O5S

Molecular Weight

238.09

EINECS

231-892-1

RTECS

SE0525000

RTECS Class

Other

Merck

12,8801

Beilstein/Gmelin

53252 (G)

Physical and Chemical Properties

Appearance

A white crystalline solid.

Solubility in water

Soluble

Melting Point

100

Density

2.400 g/cm3 (20 C)

Usage

Bleaching and oxidizing agent.

Vapor Density

8

First Aid Measures

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.

Handling and Storage

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.

Hazards Identification

Inhalation

Causes respiratory tract irritation.

Skin

Causes skin irritation.

Eyes

Causes eye irritation.

Ingestion

May cause irritation of the digestive tract. May be harmful if swallowed.

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.

EC Risk Phrase

R 8 22 42/43

EC Safety Phrase

S 17 22 26 45

UN (DOT)

1505

Exposure Controls/Personal Protection

Personal 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.

Exposure Effects

Repeated or prolonged exposure may cause allergic reactions in sensitive individuals.

Exposure limit(s)

ACGIH Threshold Limit Value (TLV): 0.1 mg/m3 (TWA), Persulfates, Sodium

Poison Class

4

Fire Fighting Measures

Flash Point

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.

Accidental Release Measures

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 and Reactivity

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong reducing agents, strong bases, alcohols, finely powdered metals.

Decomposition

Oxides of sulfur, sodium oxide.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

1505

Hazard Class

5.1

Packing Group

III