CADMIUM CARBONATE Property

Melting point:

500 °C (lit.)

Density 

4.258 g/mL at 25 °C (lit.)

solubility 

H2O: insoluble(lit.)

form 

powder

color 

White to off-white

Specific Gravity

4.258

Odor

Odorless

Water Solubility 

Very slightly soluble in water. Soluble in dilute acids, concentrated solutions of ammonium salts.

Merck 

14,1616

Solubility Product Constant (Ksp)

pKsp: 12

Exposure limits

ACGIH: TWA 0.01 mg/m3; TWA 0.002 mg/m3
NIOSH: IDLH 9 mg/m3

Stability:

Stable. Incompatible with strong acids.

CAS DataBase Reference

513-78-0(CAS DataBase Reference)

EPA Substance Registry System

Cadmium carbonate (513-78-0)

Safety

Hazard Codes 

Xn,N

Risk Statements 

20/21/22-50/53-45

Safety Statements 

60-61-45-53

RIDADR 

UN 3077 9/PG 3

WGK Germany 

3

RTECS 

FF9320000

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

III

HS Code 

28369917

Hazardous Substances Data

513-78-0(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H330Fatal if inhaled

H340May cause genetic defects

H350May cause cancer

H361Suspected of damaging fertility or the unborn child

H372Causes damage to organs through prolonged or repeated exposure

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P202Do not handle until all safety precautions have been read and understood.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

CADMIUM CARBONATE Chemical Properties,Usage,Production

Preparation

Cadmium carbonate is precipitated by adding excess ammonium carbonate to a solution of cadmium chloride:
CdCl2 + (NH4)2CO3 → CdCO3 + 2NH4Cl
The precipitate is filtered and dried at 100°C. If an alkali metal carbonate is used instead of ammonium carbonate, a hydrated basic carbonate is obtained which upon heating with ammonium chloride at 150°C in the absence of air produces anhydrous carbonate.
Cadmium carbonate also may be obtained by slow absorption of cadmium oxide with carbon dioxide.

Chemical Properties

White powdery solid; density 4.258 g/cm3; decomposes on heating below 500°C; insoluble in water and liquid ammonia; soluble in acid (with reaction).

Physical properties

White powdery solid; density 4.258 g/cm³; decomposes on heating below 500°C; insoluble in water and liquid ammonia; soluble in acid (with reaction).

Uses

Cadmium carbonate occurs in nature as the mineral otavite. The commer_x0002_cial applications of this compound are limited. It is used as a catalyst in organic synthesis and as a starting material to prepare other cadmium salts.

Uses

Cadmium carbonate is the raw material for the production of pigments for ceramic and frits and for production of cadmium salt. Used as reagents. It is used for intermediates of manufacturing polyester, glass pigment flux, organic catalysts, plastic plasticizer, stabilizer.

Safety Profile

Confirmed human carcinogen. Poison by ingestion. Mutation data reported. When heated to decomposition it emits toxic fumes of cadmium.