Lead carbonate

  • Cerussite
  • Lead(2+) carbonate
  • Lead carbonate
  • Natural cerussite
  • Plumbous carbonate
Formula
Pb3
Structure
Description
Colorless, rhombic crystals.
Uses
Catalyst for the polymerization of formaldehyde to high molecular weight crystalline poly(oxymethylene) products, in pvc friction liners for pulleys or drive cables of hoisting engines, to improve bonding of polychloroprene to metals in wire-reinforced hoses, 10-25 parts of lead caronate are used in the elastomer, component of high pressure lubricating greases, catalysts in the curing of moldable thermosetting silicone resins, in coating on vinyl chloride polymers to improve dielectric properties, component of corrosion-resistant, dispersion-strengthened grids in lead acid storage batteries, as a photoconductor for electrophotography, in coatings on heat-sensitive sheets for thermographic copying, component of a lubricant-stabilizer for pvc, component in the manuacture of thermistors, component in slip-preventing waxes for steel cables to provide higher wear resistence.

Registry Numbers and Inventories.
CAS
598-63-0
EC (EINECS/ELINCS)
209-943-4
RTECS
OF9275000
RTECS class
Tumorigen; Reproductive Effector; Human Data
UN (DOT)
2291
Beilstein/Gmelin
8591 (G)
RCRA
D008
Swiss Giftliste 1
G-1263
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
CO3Pb
Formula mass
267.20
Melting point, °C
315
Decomposition point, °C
315
Vapor pressure, mmHg
190 (230 C)
Density
6.43 g/cm3
Thermal expansion
-2/K

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Stability
No data.
Incompatibilities
Burns fiercely in fluorine.

Fire.
Fire fighting
Use method most appropriate to fight surrounding fire.
Fire potential
Ignites spontaneously and burns fiercely in fluorine.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure limit(s)
IDHL: 100 mg/m3
Carcinogin
G-A3, I-2B, CP65
Poison_Class
1
Exposure effects
Chronic lead exposure may cause elevated blood pressure and gout. In young children, developmental defects, including learning disabilities and behavioral abnormalities, can occur without symptoms at blood lead levels above 10 micrograms/deciliter. At higher levels of exposure headache, fatigue, irritability and malaise may occur. At high levels, encephalopathy, seizures and focal neurologic findings with imminent risk of death, permanent mental retardation, and motor deficits may occur. Lead is transferred across the placenta. It can affect reproduction in males and females, and affects neurodevelopmental milestones in children with both prenatal and postnatal exposure.
   Ingestion
Chronic lead exposure: abdominal pain, nausea, anorexia, vomiting, constipation, diarrhea, and a metallic taste in the mouth have been reported with chronic toxicity. Severe and paroxysmal colic characterized by a rigid and retracted abdomen may occur.
   Inhalation
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Effects of contact or inhalation may be delayed.
   Skin
Avoid any skin contact. See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Acute exposure - activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents. Consider gastric lavage in patients with recent ingestion of liquid or powdered products.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Remove material from skin immediately. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2291
Response guide
Hazard class
6.1
Packing Group
III
 
USCG CHRIS Code
LEE