Silver Sulfate

Basic Information of Silver Sulfate

CAS No.	10294-26-5
EC No.	233-653-7
Chemical Formula	Ag₂SO₄
Molecular Weight	311.80 g/mol
Appearance	Fine white to slightly grayish crystalline powder
Odor	Odorless
Melting point	652 °C (decomposes above melting)
Boiling point	Not applicable (decomposes)
Density	5.45 g/cm³
Solubility	Low solubility in water (0.83 g/100 mL at 20 °C); soluble in dilute acids, ammonia, concentrated H₂SO₄
Nature (hazards)	Causes skin and eye irritation, harmful if swallowed or inhaled, toxic to aquatic life with long lasting effects
RIDADR	UN 3077, Environmentally hazardous substance, solid, n.o.s. (Silver sulfate), Class 9, Packing Group III
Chemical Structure

Primary Applications of Silver Sulfate

Silver Sulfate provides a controlled-release source of Ag⁺ ions and is used in analytical, catalytic, and antimicrobial applications.

1. Gravimetric & Analytical Chemistry
   Serves as a standard reagent for sulfate determination (precipitation of BaSO₄) and as a source of Ag⁺ in qualitative halide analysis and potentiometric titrations.

2. Silver Nanoparticle Synthesis
   Used in reduction processes to generate Ag nanoparticles or colloids, particularly where sulfate counterions are preferred over nitrate or chloride.

3. Antimicrobial & Biocidal Applications
   Incorporated into coatings, textiles, and medical devices for slow release of Ag⁺ ions with strong antimicrobial activity against bacteria and fungi.

4. Supported Silver Catalyst Preparation
   Employed as a precursor for depositing Ag on supports via reduction or decomposition, useful in selective oxidation and ethylene oxide catalysis.

5. Advanced Materials & Electrochemistry
   Used in preparation of silver oxide/sulfate composites, reference electrodes, and functional materials requiring controlled silver ion release.

6. Photography & Historical Processes
   Employed in certain silver halide emulsion preparations and traditional photographic techniques where sulfate anions are compatible.

• High Silver Content Consistency
  Precise analytical verification ensures uniform Ag content, minimal impurities, and batch reproducibility for reliable performance.

• Secure Precious Metal Sourcing
  Transparent, responsible silver procurement with inventory buffering to provide supply stability and competitive pricing.

• Technical Application Support
  Experienced specialists offer guidance on dissolution, reduction protocols, antimicrobial formulation, and analytical method optimization.

• Full Regulatory Compliance
  Comprehensive COA, REACH, RoHS, and detailed SDS documentation to facilitate seamless integration into global operations and audits.

• Sustainability & Recycling Commitment
  Ethical sourcing practices and silver recovery/recycling programs aligned with ESG objectives and circular economy principles.

Hazards Classification

• GHS Classification: Skin Irritation (Category 2); Eye Irritation (Category 2A); Acute Toxicity, Oral (Category 4); Aquatic Chronic (Category 2)

• Hazard Statements: H315: Causes skin irritation; H319: Causes serious eye irritation; H302: Harmful if swallowed; H411: Toxic to aquatic life with long lasting effects

• UN Number: UN 3077

• Hazard Class: 9 (Miscellaneous dangerous substances and articles)

• Packing Group: III