| Identification | More | [Name]
LEAD CARBONATE | [CAS]
598-63-0 | [Synonyms]
CERUSSITE
LEAD CARBONATE
LEAD(II) CARBONATE
Carbonicacid,lead(2+)salt(1:1)
carbonicacid,lead(2++)salt(1:1)
cerussete
dibasicleadcarbonate
lead(2+)carbonate
leadcarbonate(pbco3)
naturalcerussite
plumbouscarbonate
LEAD(II) CARBONATE, 99.99+%
LEAD(II) CARBONATE A.C.S. REAGENT
LEAD CARBONATE, NORMAL ACS REAGENT
Lead(II)carbonate,ACS
LEAD CARBONATE REAGENT (ACS)
LEAD CARBONATE, 99.999%
cerussite, naturally occuring mineral, approximately 0.06-0.19in
lead carbonate (naturally occuring mineral)
lead(ii) carbonate, puratronic | [EINECS(EC#)]
209-943-4 | [Molecular Formula]
CO3Pb | [MDL Number]
MFCD00064631 | [Molecular Weight]
267.21 | [MOL File]
598-63-0.mol |
| Chemical Properties | Back Directory | [Appearance]
white powder | [Melting point ]
399-401°C (dec.) | [density ]
6.6 g/cm3 | [refractive index ]
2.08 | [storage temp. ]
Store below +30°C. | [solubility ]
insoluble in H2O | [form ]
Powder | [color ]
White | [PH]
5.8 (50g/l, H2O, 20℃)(slurry) | [Stability:]
Stable. Incompatible with strong acids, strong oxidizing agents. | [Water Solubility ]
Soluble in acid and alkali. Insoluble in water, alcohol and ammonia. | [Dielectric constant]
18.1（16.0℃） | [CAS DataBase Reference]
598-63-0(CAS DataBase Reference) | [EPA Substance Registry System]
Lead(II) carbonate (598-63-0) |
| Hazard Information | Back Directory | [Chemical Properties]
colorless ortho-rhomb crystal(s); made by adding CO2 to a cold dilute solution of lead acetate; many uses such as a catalyst for organic reactions, in high temp greases, as a photoconductor in electrophotography [KIR78] | [Uses]
Preparation of lead standard solutions | [Definition]
A naturally occurring
form of lead(II) carbonate that is an
important lead ore. It forms orthorhombic
crystals and is often found together with
galena (PbS). | [Definition]
cerussite: An ore of lead consistingof lead carbonate, PbCO3. It is usuallyof secondary origin, formed by theweathering of galena. Pure cerussiteis white but the mineral may be grey due to the presence of impurities. Itforms well-shaped orthorhombiccrystals. It occurs in the USA, Spain,and SW Africa. | [Production Methods]
Lead carbonate is prepared by passing CO2 into a cold dilute solution of lead acetate, or by shaking a suspension of a lead salt less soluble than the carbonate with ammonium carbonate at a low temperature to avoid formation of basic lead carbonate. |
| Safety Data | Back Directory | [Hazard Codes ]
T,N | [Risk Statements ]
R61:May cause harm to the unborn child.
R20/22:Harmful by inhalation and if swallowed .
R33:Danger of cumulative effects.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R62:Possible risk of impaired fertility. | [Safety Statements ]
S53:Avoid exposure-obtain special instruction before use .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet . | [RIDADR ]
UN 3077 9/PG 3
| [WGK Germany ]
3
| [RTECS ]
OF9275000
| [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
III | [HS Code ]
28369990 | [Hazardous Substances Data]
598-63-0(Hazardous Substances Data) |
| Questions And Answer | Back Directory | [Occurrence and Uses]
Lead carbonate occurs in nature as the mineral cerussite. It has several applications. The compound is used in high pressure lubricating greases; as a coating on polyvinyl chloride to improve the dielectric properties of the polymers; in the PVC friction liners for pulleys; in corrosion-resistant grids in lead-storage batteries; in heat-sensitive sheets for thermographic copying; as a photoconductor in electrophotography; in thermistors; and in waxes for steel cables. Another major application of this compound is in catalysis—to catalyze polymerization of formaldehyde to high molecular weight polymeric products and to accelerate the process of curing of moldable thermosetting silicone resins.
| [Physical Properties]
Colorless orthorhombic crystals; refractive index 1.804; Moh’s hardness 3–3.5; density 6.60 g/cm3; decomposes on heating at 315°C; practically insoluble in water (1.1 mg/L at 20°C); KSP 1.46x10–13 at 25°C; also insoluble in alcohol and ammonia; soluble in acids and alkalies.
| [Preparation]
Lead carbonate is prepared by passing carbon dioxide into a cold dilute solution of lead acetate:
Pb(C2H3O2)2 + CO2 + H2O → PbCO3 + CH3COOH
The compound also is prepared in the laboratory by adding sodium bicarbonate to a cold dilute solution of a lead(II) salt, such as lead nitrate or acetate:
Pb2+ + 2HCO3¯ → PbCO3 + CO2 + H2O
| [Reactions]
When heated at 315°C, lead carbonate decomposes to lead oxide and carbon dioxide:
PbCO3→PbO + CO2
When heated in water, it transforms to basic lead carbonate, 2PbCO3•Pb(OH)2
3PbCO3 + H2O → 2PbCO3•Pb(OH)2 + CO2
Lead carbonate dissolves in acids, forming the corresponding lead salt and evolving carbon dioxide:
PbCO3 + 2HCl → PbCl2 + H2O + CO2
Reaction with concentrated acetic acid yields anhydrous lead(II) acetate.
Fusion with boric acid at high temperature forms lead metaborate that has an approximate composition Pb(BO2)2•H2O. The product loses water of crystallization at 160°C.
| [Toxicity]
Although an insoluble salt of lead, the compound exhibits low-to-moderate systemic effects from ingestion in humans. The effects are gastrointestinal contractions, jaundice, convulsions, nausea or vomiting, and degenerative changes in the brain (Lewis (Sr.), R. J. 1996. Sax’s Dangerous Properties of Industrial Materials, 9th ed. New York: Van Nostrand Reinhold).
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