- Ammonium Peroxydisulfate
- Diammonium peroxodisulfate
White crystals, odorless.
Used as a oxidizer and bleacher.
Registry Numbers and Inventories.
EC Index Number
Oxidising; Harmful; Irritant; Sensitising
R 8 22 36/37/38 42/43
S 22 24 26 37
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Decomposition point, °C
Vapor density (air=1)
1.98 g/cm3 (20 C)
Solubility in water
Hazards and Protection.
Do not store near combustible materials. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from metals. Keep away from reducing agents.
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid contact with clothing and other combustible materials. Avoid ingestion and inhalation. Wash clothing before reuse.
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 gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
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.
Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Provide ventilation.
Substance is shock sensitive and thermally unstable. Decomposes when heated. May decompose on exposure to moist air or water.
Reducing agents, iron, sodium peroxide, powdered aluminum.
Nitrogen oxides, oxides of sulfur, ammonia and/or derivatives, nitrogen.
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use water spray to keep fire-exposed containers cool. Oxidizer. Greatly increases the burning rate of combustible materials. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. May accelerate burning if involved in a fire. Containers may explode when heated. Extinguishing media: Cool containers with flooding quantities of water until well after fire is out. For small fires DO NOT use dry chemicals, carbon dioxide, halon or foams. USE WATER ONLY. For large fires, flood fire area with water from a distance.
Moderate fire hazard by reaction with reducing agents.
May explode from heat or contamination. May react explosively with hydrocarbons (fuels). May ignite combustibles.
Toxic oxides of nitrogen and sulfuric acid fumes may form in fire.
OEL-UNITED KINGDOM:TWA 1 mg/m3
Repeated or prolonged exposure may cause allergic reactions in sensitive individuals.
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.
Causes respiratory tract irritation. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema.
Causes skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
Causes eye irritation.
Do NOT induce vomiting. 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.
Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
USCG CHRIS Code
2833 40 00
Std. Transport #