Lead dioxide

  • Lead(IV) oxide
  • Lead peroxide
  • Lead brown
  • Plumbic acid
Formula
PbO2
Structure
Description
Brown, hexagonal crystals.
Uses
Electrodes in batteries, oxidizing agent in Manufacture dyes, as discharge in dyeing with indigo, Manufacture rubber substitutes, with amorphous phosphorus as ignition surface for matches, pyrotechny, Manufacture pigments, in anal. Chemistry.

Registry Numbers and Inventories.
CAS
1309-60-0
EC (EINECS/ELINCS)
215-174-5
EC Index Number
082-001-00-6
EC Class
toxic for reproduction, harmful, dangerous for the environment
R 61 E20/22 33 50/53 62
S 53 45 60 61
RTECS
OG0700000
RTECS class
Other
UN (DOT)
1872
Merck
12,5424
Beilstein/Gmelin
9360 (G)
RCRA
D008
Swiss Giftliste 1
G-1268
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
O2Pb
Formula mass
239.20
Melting point, °C
290
Decomposition point, °C
350
Vapor density (air=1)
8.2
Density
9.58 g/cm3 (18.85 C)
Solubility in water
Insoluble
Thermal expansion
5.6E-6/K (26 C)

Hazards and Protection.
Storage
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. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Keep away from clothing and other combustible materials.
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
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.
Disposal code
15
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Aluminum carbide, barium sulfide, boron calcium sulfide, cesium,acetylene, carbide, chlorine trifluoride, hydrogen peroxide, hydrogen sulfide, hydroxylamine, molybdenum, peroxyformic acid, phenyl hydrazine, phosphorus, phosphorus trichloride, sulfur, sulfuryl chloride, tungsten and zirconium.
Decomposition
Irritating and toxic fumes and gases.

Fire.
Flash Point,°C
290
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Combustion generates toxic fumes. Strong oxidizer. Contact with combustible materials may cause a fire. Extinguishing media: Use water only!
Fire potential
Dangerous fire risk in contact with organic materials.
Hazards
May explode from heat or contamination. Some may burn rapidly. 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
Evolves oxygen when heated, first forming pb3o4, @ high temp pbo
Health
1
 
Flammability
0
 
 
Reactivity
0
 
 
Special
O

Health.
Exposure limit(s)
TLV (as Pb): ppm; 0.05 mg/m3 A3 (ACGIH 1996). MAK: ppm; 0.1 mg/m3; as Pb (1996).
Carcinogin
G-A3, I-2B, CP65
Poison_Class
1
Exposure effects
Chronic exposure to lead may result in plumbism which is characterized by lead line in gum, headache, muscle weakness, mental changes,
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause kidney damage. Many lead compounds can cause toxic effects in the blood-forming organs, kidneys and central nervous
   Inhalation
Causes respiratory tract irritation. May cause effects similar to those described for ingestion.
   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
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
1872
Response guide
Hazard class
5.1
Packing Group
III
 
HS Code
2824 90 00
 
Std. Transport #
4918779 4918780