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Cadmium Sulfate (Octahydrate)
Other Names: Sulfuric acid, cadmium salt (1:1)

CAS Number: 7790-84-3
Sum Formula: 3CdSO₄·8H₂O
Molar Mass: 769.55 g/mol
Appearance: Colorless to white crystalline solid

Cadmium sulfate octahydrate is the hydrated form of cadmium sulfate, an inorganic compound consisting of cadmium cations and sulfate anions. It is highly soluble in water and widely used in electroplating, pigments, and as a precursor in cadmium-based materials research.

Chemical and Physical Properties
Density: 3.08 g/cm³ (octahydrate)
Melting Point: Decomposes upon heating
Boiling Point: Not applicable (decomposes)
Solubility in Water: Soluble (approximately 76 g/L at 20°C)
Solubility in Other Solvents: Insoluble in alcohol and ether
Odor: Odorless

Applications
Electroplating: Used in cadmium electroplating baths to provide corrosion-resistant metallic coatings.
Pigment Production: Employed as a precursor in the manufacture of cadmium-based pigments.
Battery Manufacturing: Studied in the context of cadmium-based electrode materials.
Analytical Chemistry: Used in gravimetric and qualitative analysis of sulfates and cadmium ions.
Material Science: Applied in the synthesis of semiconductor materials and other cadmium compounds.

Safety
Signal Word: Danger

Hazard Statements:
H301: Toxic if swallowed
H331: Toxic if inhaled
H350: May cause cancer
H360Df: May damage the unborn child. Suspected of damaging fertility
H373: May cause damage to organs through prolonged or repeated exposure
H400: Very toxic to aquatic life
H410: Very toxic to aquatic life with long-lasting effects

Precautionary Statements – Prevention:
P201: Obtain special instructions before use
P260: Do not breathe dust or fumes
P264: Wash hands thoroughly after handling
P270: Do not eat, drink or smoke when using this product
P273: Avoid release to the environment
P280: Wear protective gloves, protective clothing, eye protection, and face protection

Precautionary Statements – Response:
P301+P310: IF SWALLOWED: Immediately call a POISON CENTER or doctor
P304+P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing
P308+P313: IF exposed or concerned: Get medical advice/attention
P391: Collect spillage

Handling and Storage
Storage Conditions: Store in a tightly closed container in a cool, dry, well-ventilated area. Keep away from acids, oxidizers, and incompatible materials.
Handling Precautions: Use only in well-ventilated areas or under a fume hood. Avoid dust formation. Use appropriate PPE. Handle as a toxic and environmentally hazardous material.