7790-84-3 Usage
Description
Cadmium sulfate octahydrate is a chemical compound with the formula CdSO4·8H2O. It is a colorless crystalline solid that is highly soluble in water. It is a precursor to various cadmium-based compounds and has a wide range of applications in different industries.
Uses
Used in Electroplating Industry:
Cadmium sulfate octahydrate is used as a precursor for cadmium-based pigments such as cadmium sulfide. It is also used in the electroplating of cadmium, which is used in electronic circuits.
Used in Pharmaceutical Industry:
Cadmium sulfate octahydrate is used as a pharmaceutical intermediate, playing a crucial role in the synthesis of various pharmaceutical compounds.
Used in Standard Weston Cell:
Cadmium sulfate octahydrate is used in the standard Weston cell, which is an electrochemical cell used to determine the electrochemical equivalence of substances.
Used in Electrodeposition:
Cadmium sulfate octahydrate is used in the electrodeposition of Cd, Cu, and Ni, which are essential for various industrial applications.
Used in Manufacturing of Standard Cadmium Elements:
Cadmium sulfate octahydrate is used in the preparation of cadmium standards, which are essential for calibration and quality control in various industries.
Used in Analytical Chemistry:
Cadmium sulfate octahydrate can be used as a catalyst in the Marsh test for arsenic, determining hydrogen sulfide (H2S), and detecting fumaric acid. These applications are crucial in analytical chemistry for the detection and quantification of various compounds.
Used as a Pesticide:
Cadmium sulfate octahydrate is used as a nematocide, fungicide, and bactericide, helping to control pests and diseases in agriculture.
Used as a Lubricant:
Cadmium sulfate octahydrate is used as a lubricant in various industrial applications, reducing friction and wear between moving parts.
Used as an Electrolyte:
Cadmium sulfate octahydrate is used as an electrolyte in the Weston cell, which is an electrochemical cell used to determine the electrochemical equivalence of substances.
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.
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.]
Check Digit Verification of cas no
The CAS Registry Mumber 7790-84-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,9 and 0 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 7790-84:
(6*7)+(5*7)+(4*9)+(3*0)+(2*8)+(1*4)=133
133 % 10 = 3
So 7790-84-3 is a valid CAS Registry Number.
InChI:InChI=1/3Cd.3H2O4S.8H2O/c;;;3*1-5(2,3)4;;;;;;;;/h;;;3*(H2,1,2,3,4);8*1H2/q3*+2;;;;;;;;;;;/p-6
