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Silver nitrate for analysis EMPARTA® ACS

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Silver nitrate for analysis EMPARTA® ACS
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Category
Product Code
1.93200.0027
HSN Code
98020000
CAS Number
7761-88-8
Brand Name
Merck Millipore
Packing Size
25 g

What Is Silver Nitrate?

Silver Nitrate (AgNO₃, CAS No. 7761-88-8) is a light-sensitive, high-oxidizing inorganic salt widely used in labs for titrimetric analysis, trace-metal testing, and research. Known for its precision and purity, EMPARTA® ACS-grade Silver Nitrate from Lab Chemicals matches or exceeds Merck silver nitrate quality—offering a reliable, cost-effective alternative. Ideal for analytical and quality-control applications, it meets strict ACS specifications, ensuring consistency in even the most demanding lab environments. 

Key Chemical Properties of Silver Nitrate

Silver Nitrate (AgNO₃) is valued for several key physicochemical traits: 

  • Oxidizing Strength: Strong oxidizer, ideal for redox reactions. 
  • Photo reactivity: Decomposes under light to elemental silver—used in photography and staining. 
  • Solubility: Highly water-soluble (~2,160 g/L at 25 °C); also soluble in ethanol and glycerol. 
  • Acidic Character: Mildly acidic (pH ~5.5–6), useful in acid-base titrations. 
  • Precipitation Selectivity: Forms insoluble silver halides with Cl⁻, Br⁻, I⁻—ideal for gravimetric/Volhard methods. 
  • Thermal Stability: Melts at 212 °C, decomposes above 440 °C—suitable for high-temperature processes. 

Molecular Formula and Composition

  • Chemical Formula: AgNO₃ 
  • Ionic Composition: Ag⁺ cation paired with NO₃⁻ anion 
  • Stoichiometry: One silver atom (Ag, atomic number 47) balanced by a nitrate group comprised of one nitrogen and three oxygen atoms. 

The discrete 1:1 relationship between silver and nitrate confers predictable reactivity. In titrations, each mole of silver ions precipitates exactly one mole of chloride ions, enabling quantitative determination of halides in environmental, food, and pharmaceutical samples. 

Physical Characteristics – Appearance & Handling

Attribute  Specification 
Appearance  Colourless to white, odourless, crystalline solid; darkens upon light exposure 
Density  4.35 g/cm³ at 20 °C 
Hygroscopicity  Minimally hygroscopic; prepare solutions with deionized water to avoid contamination 
Light Sensitivity  Store in amber or opaque containers to prevent photodegradation 
Packaging Options  25 g, 100 g, 500 g, and 1 kg amber-glass packs; bulk formats available 
Safety Considerations  Oxidizer Category 2 (UN 1493); use gloves and goggles; avoid skin contact to prevent argyria 

How Is EMPARTA® ACS Silver Nitrate Manufactured?

Producing ACS-grade Silver Nitrate involves tightly controlled steps: 

  • Primary Refining: >99.99% pure silver is electrolytically refined to remove trace metals (e.g., Cu, Pb, Ni). 
  • Dissolution: Refined silver reacts with spectroscopic-grade HNO₃ under controlled temperatures, releasing NO/NO₂ gases that are scrubbed for safety. 
  • Crystallization: Vacuum concentration and cooling yield AgNO₃ crystals; multiple re-crystallizations remove sub-ppm impurities. 
  • Drying & Milling: Vacuum-dried below 60 °C, then milled for uniform granule size. 
  • Quality Control: Each batch is tested via ICP-MS, halide titration, and UV-Vis to meet ACS limits. 
  • Light-Safe Packaging: Packed under low-actinic light in amber glass with tamper-evident seals. 

This ensures EMPARTA® Silver Nitrate from Lab Chemicals matches or exceeds Merck silver nitrate in purity and performance. 

Analytical & Industrial Applications of Silver Nitrate

1. Volumetric & Gravimetric Analysis 

  • Chloride Testing: Key titrant in Mohr and Volhard methods for water and salt analysis. 
  • Halide Screening: Precipitates bromide and iodide for gravimetric use in pharma testing. 

In such workflows, analysts may also prepare samples using surfactants like sodium dodecyl sulfate chemical to enhance solubility and matrix compatibility. 

2. Instrumentation & Photometry 

  • Reference Standard: Calibrates ion-selective electrodes and ion chromatography. 
  • UV-Vis Colorimetry: Forms chromophores (e.g., with dithizone) for trace metal detection. 

3. Microbiology & Diagnostics 

  • Antimicrobial Agent: Used in eye care and wound dressings. 
  • Protein Staining: Enables nanogram-level detection in electrophoresis gels. 

4. Electronics & Materials 

  • Conductive Inks: Precursor to silver nanoparticles for printed electronics. 
  • Mirror Coating: Used in Tollens reactions for glass silvering. 

5. Environment & Mining 

  • Cyanide Scavenging: Titrates free cyanide in gold leaching. 
  • Water Monitoring: Measures halides in industrial wastewater. 

Conclusion

Silver Nitrate for Analysis EMPARTA® ACS (AgNO₃, CAS No. 7761-88-8) offers high purity, strong oxidizing power, and full regulatory compliance for accurate, reproducible results. Ideal for titrations and advanced research, it’s a cost-effective, reliable alternative to premium brands. Backed by strict quality standards and expert support, Lab Chemicals ensures consistent performance. Explore our complete range of EMPARTA® and GC-grade reagents, including Acetonitrile HPLC and Dimethyl Sulfoxide, for dependable analytical precision. 

Molecular Formula and Composition

  • Chemical Formula: AgNO₃ 
  • Ionic Composition: Ag⁺ cation paired with NO₃⁻ anion 
  • Stoichiometry: One silver atom (Ag, atomic number 47) balanced by a nitrate group comprised of one nitrogen and three oxygen atoms. 

The discrete 1:1 relationship between silver and nitrate confers predictable reactivity. In titrations, each mole of silver ions precipitates exactly one mole of chloride ions, enabling quantitative determination of halides in environmental, food, and pharmaceutical samples. 

Physical Characteristics – Appearance & Handling

Attribute  Specification 
Appearance  Colourless to white, odourless, crystalline solid; darkens upon light exposure 
Density  4.35 g/cm³ at 20 °C 
Hygroscopicity  Minimally hygroscopic; prepare solutions with deionized water to avoid contamination 
Light Sensitivity  Store in amber or opaque containers to prevent photodegradation 
Packaging Options  25 g, 100 g, 500 g, and 1 kg amber-glass packs; bulk formats available 
Safety Considerations  Oxidizer Category 2 (UN 1493); use gloves and goggles; avoid skin contact to prevent argyria 

How Is EMPARTA® ACS Silver Nitrate Manufactured?

Producing ACS-grade Silver Nitrate involves tightly controlled steps: 

  • Primary Refining: >99.99% pure silver is electrolytically refined to remove trace metals (e.g., Cu, Pb, Ni). 
  • Dissolution: Refined silver reacts with spectroscopic-grade HNO₃ under controlled temperatures, releasing NO/NO₂ gases that are scrubbed for safety. 
  • Crystallization: Vacuum concentration and cooling yield AgNO₃ crystals; multiple re-crystallizations remove sub-ppm impurities. 
  • Drying & Milling: Vacuum-dried below 60 °C, then milled for uniform granule size. 
  • Quality Control: Each batch is tested via ICP-MS, halide titration, and UV-Vis to meet ACS limits. 
  • Light-Safe Packaging: Packed under low-actinic light in amber glass with tamper-evident seals. 

This ensures EMPARTA® Silver Nitrate from Lab Chemicals matches or exceeds Merck silver nitrate in purity and performance. 

Analytical & Industrial Applications of Silver Nitrate

1. Volumetric & Gravimetric Analysis 

  • Chloride Testing: Key titrant in Mohr and Volhard methods for water and salt analysis. 
  • Halide Screening: Precipitates bromide and iodide for gravimetric use in pharma testing. 

In such workflows, analysts may also prepare samples using surfactants like sodium dodecyl sulfate chemical to enhance solubility and matrix compatibility. 

2. Instrumentation & Photometry 

  • Reference Standard: Calibrates ion-selective electrodes and ion chromatography. 
  • UV-Vis Colorimetry: Forms chromophores (e.g., with dithizone) for trace metal detection. 

3. Microbiology & Diagnostics 

  • Antimicrobial Agent: Used in eye care and wound dressings. 
  • Protein Staining: Enables nanogram-level detection in electrophoresis gels. 

4. Electronics & Materials 

  • Conductive Inks: Precursor to silver nanoparticles for printed electronics. 
  • Mirror Coating: Used in Tollens reactions for glass silvering. 

5. Environment & Mining 

  • Cyanide Scavenging: Titrates free cyanide in gold leaching. 
  • Water Monitoring: Measures halides in industrial wastewater. 

Conclusion

Silver Nitrate for Analysis EMPARTA® ACS (AgNO₃, CAS No. 7761-88-8) offers high purity, strong oxidizing power, and full regulatory compliance for accurate, reproducible results. Ideal for titrations and advanced research, it’s a cost-effective, reliable alternative to premium brands. Backed by strict quality standards and expert support, Lab Chemicals ensures consistent performance. Explore our complete range of EMPARTA® and GC-grade reagents, including Acetonitrile HPLC and Dimethyl Sulfoxide, for dependable analytical precision. 

Welcome to Jignesh Agency Pvt Ltd, formerly known as Jignesh Agency, established in 1990 by our visionary Director, Jignesh U Pathak. With over three decades of experience, we have emerged as market leaders in India, specializing in providing a comprehensive range of laboratory chemicals, filtration products, bulk solvents, standards, impurities, chromatography consumables, plastic ware, and scientific instruments.

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