Cadmium sulfate octahydrate Property

Melting point:

41 °C

Density 

3.08

refractive index 

1.565

storage temp. 

Store at +5°C to +30°C.

solubility 

1130g/l

form 

Solid

color 

White

Specific Gravity

3.08

Odor

Odorless

PH

3.0-6.0 (50g/l, H2O, 20℃)

Water Solubility 

Highly soluble in water. Partially soluble in methanol and ethyl acetate. Insoluble in ethanol.

Merck 

14,1627

Boiling point:

>80°C(decomposition)

Exposure limits

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

Stability:

Stable.

CAS DataBase Reference

7790-84-3(CAS DataBase Reference)

Safety

Hazard Codes 

T+,N

Risk Statements 

45-46-60-61-25-26-48/23/25-50/53

Safety Statements 

53-45-60-61

RIDADR 

UN 2570 6.1/PG 3

WGK Germany 

3

RTECS 

EV2850000

TSCA 

Yes

HS Code 

2833 29 20

HazardClass 

6.1

PackingGroup 

III

Toxicity

LD50 orally in Rabbit: 280 mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H301Toxic if swalloed

H330Fatal if inhaled

H340May cause genetic defects

H350May cause cancer

H372Causes damage to organs through prolonged or repeated exposure

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P201Obtain special instructions before use.

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

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P273Avoid release to the environment.

Cadmium sulfate octahydrate Chemical Properties,Usage,Production

Chemical Properties

White crystal or crystalline powder

Chemical Properties

Cadmium sulfate is a white to colorless, odorless, crystalline substance.

Uses

Cadmium sulfate mainly used in electroplating of cadmium, which is used in electronic circuits. It is used as a precursor for cadmium based pigments such as cadmium sulfide and pharmaceutical intermediates. It is used in the standard weston cell.

Uses

In electrodeposition of Cd, Cu, and Ni; in phosphors, manufacture of standard cadmium elements; Cadmium sulfate octahydrate can be used as catalyst in the Marsh test for As, determining H2S and detecting fumaric acid; as nematocide, fungicide, bactericide; lubricant; electrolyte in Weston cell.

Uses

Cadmium sulfate octahydrate is used in preparation of cadmium standards.

Definition

ChEBI: A hydrate composed of cadmium sulfate and water in a 3:8 ratio.

Safety Profile

Confirmed human carcinogen with experimental tumorigenic and neoplastigenic data. Experimental teratogenic and reproductive effects. Mutation data reported. When heated to decomposition it emits very toxic fumes of Cd and SO,. See also CADMIUM SULFATE, CADMIUM COMPOUNDS, and SULFATES.

Potential Exposure

It is used in pigments, electroplating; as a fungicide; and in synthetic and analytical chemistry. Also used in fluorescent screens; as an electrolyte. Incompatibilities: Acts as a weak inorganic acid; neutralizes bases. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, sulfur, selenium, tellurium, zinc

Shipping

UN2570 Cadmium compounds, Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.

Purification Methods

The sulfate crystallises from distilled water as a hydrate by partial evaporation in a desiccator. It gives the monohydrate on heating at 80o. It is insoluble in EtOH, Me2CO or EtOAc. It forms a white precipitate of Cd(OH)2 with aqueous NH3 which dissolves in excess of NH3 to form soluble [Cd(NH3)4]SO4. [Gmelin’s Cadmium (8th edn) 33 p 121 1925, Suppl pp 609-610 1959.]