Silver Granule, Fine Silver Granules, Pure Silver Beads, Silver Metal Granules, Silver Beads, White Metal Granules, 7440-22-4
SILVER GRANULES – SILVER GRANULES
1. CHEMICAL IDENTITY AND DEFINITION
| Parameter |
Information |
| Chemical Name |
Silver |
| Other Names |
Fine Silver Granules, Pure Silver Beads, Silver Metal Granules, Silver Beads, White Metal Granules, Silver Grain, Jeweler's Granules |
| Chemical Symbol |
Ag |
| CAS Number |
7440-22-4 |
| EC Number (EINECS) |
231-131-3 |
| Purity |
99.9% (999.9 / 999 fineness) |
| Appearance |
Bright white, rounded granules |
| Odor |
Odorless |
| Physical State (20°C) |
Solid (granules / beads) |
| Metal Class |
Precious metal / Noble metal |
2. WHAT ARE SILVER GRANULES?
Silver granules are pure silver processed into small, rounded bead-like particles. They are typically produced at 99.9% purity (999 fineness) and supplied in a ready-to-melt form. The granular form allows for precise measurement and easy melting, making it especially preferred in jewelry, electronics, and investment sectors.
3. PHYSICAL PROPERTIES
| Property |
Value |
| Appearance |
Bright white, rounded granules |
| Purity |
99.9% (999 fineness) |
| Density (20°C) |
10.49 g/cm³ |
| Melting Point |
961.8 °C |
| Boiling Point |
2,162 °C |
| Molar Mass |
107.87 g/mol |
| Color |
Bright white / silver-white |
| Hardness (Mohs) |
2.5 – 3.0 |
| Grain Size |
Variable (1-5 mm typical) |
| Surface Finish |
Bright, clean, oxide-free |
3.1. GRANULE SIZE DISTRIBUTION
| Parameter |
Typical Value |
| Grain Diameter |
1 – 5 mm |
| Shape |
Rounded / Spherical droplets |
| Surface |
Bright, smooth |
| Flowability |
Excellent (free-flowing) |
4. CHEMICAL PROPERTIES
| Property |
Information |
| Chemical Symbol |
Ag |
| Atomic Number |
47 |
| Atomic Weight |
107.8682 g/mol |
| CAS Number |
7440-22-4 |
| EC Number |
231-131-3 |
| Periodic Table Group |
Group 11 (Transition Metal) |
| Period |
Period 5 |
| Electron Configuration |
[Kr] 4d¹⁰ 5s¹ |
| Valence |
+1 (primary), +2, +3 |
| Stability |
Stable in air, tarnishes (reacts with sulfur) |
| Corrosion Resistance |
Good (resistant to oxygen and water) |
5. ELECTRICAL AND THERMAL PROPERTIES
| Property |
Value |
| Electrical Conductivity |
63 × 10⁶ S/m (highest of all metals) |
| Electrical Resistivity (20°C) |
1.59 × 10⁻⁸ Ω·m |
| Thermal Conductivity |
429 W/m·K |
| Coefficient of Thermal Expansion |
18.9 × 10⁻⁶ /K |
| Specific Heat (20°C) |
235 J/kg·K |
| Latent Heat of Fusion |
104.5 kJ/kg |
6. MECHANICAL PROPERTIES
| Property |
Value |
| Hardness (Mohs) |
2.5 – 3.0 |
| Hardness (Vickers) |
~60 – 70 HV |
| Tensile Strength |
~125 – 170 MPa |
| Yield Strength |
~30 – 60 MPa |
| Modulus of Elasticity |
~76 GPa |
| Poisson's Ratio |
~0.37 |
| Elongation (%) |
~20 – 50% |
7. PURITY GRADES
| Fineness |
Purity (%) |
Description |
| 999.9 |
99.99% |
Four nines (highest purity) |
| 999 |
99.9% |
Three nines (standard fine silver) |
| 990 |
99.0% |
Silver alloy |
| 925 |
92.5% |
Sterling silver (jewelry standard) |
8. APPLICATIONS
8.1. Jewelry and Goldsmithing
| Application |
Description |
| High-Quality Jewelry |
Fine silver and silver alloy jewelry production |
| Goldsmithing |
Melted for casting or drawn into wire |
| Handicrafts |
Custom-designed jewelry and accessories |
| Silverware |
Silver decorative items and tableware |
8.2. Electronics
| Application |
Description |
| Circuit Boards |
Conductive traces on printed circuit boards |
| Electronic Components |
Capacitors, contacts, switches |
| Solder Materials |
Silver-containing solder alloys |
| OLED / LCD Displays |
Conductive layers |
| Solar Panels |
Conductive inks in photovoltaic cells |
| Connectors |
High-frequency connectors |
8.3. Chemical Industry
| Application |
Description |
| Catalysts |
Used as catalyst in chemical reactions |
| Specialty Chemical Processes |
Oxidation and reduction reactions |
| Electroplating |
Silver plating baths |
| Pharmaceuticals |
Antimicrobial compounds |
| Water Treatment |
Silver ion water treatment systems |
8.4. Investment
| Application |
Description |
| Bullion Investment |
Physical silver investment |
| Store of Value |
Precious metal storage |
| Portfolio Diversification |
Value preservation in investment portfolios |
| Industrial Demand |
Stockpiling for industrial use |
8.5. Art and Decoration
| Application |
Description |
| Decorative Objects |
Luxury decoration products |
| Artworks |
Sculptures, reliefs, and art objects |
| Stained Glass |
Use in stained glass art |
| Ceramics and Glass |
Decorative coatings |
| Furniture Accessories |
Luxury furniture embellishments |
8.6. Medical Applications
| Application |
Description |
| Antimicrobial Surfaces |
Hospital equipment |
| Wound Dressings |
Silver-containing wound care products |
| Dentistry |
Dental filling alloys |
9. PHYSICAL FORMS
| Form |
Description |
| Granules |
Small rounded beads (ready for melting) |
| Ingots |
Standard weight blocks |
| Sheet / Foil |
Rolled thin sheets |
| Wire |
Drawn silver wires |
| Powder |
Micron-sized silver powder |
| Foils |
Thin silver foils |
10. WHY SILVER GRANULES ARE PREFERRED
| Advantage |
Description |
| High Purity |
99.9% purity ideal for quality products |
| Easy Workability |
Easy to melt, shape, and cast |
| Versatility |
Usable across multiple industries |
| Precise Measurement |
Granule form allows accurate weighing |
| Quick Melting |
Small grain size ensures fast, homogeneous melting |
| Low Oxidation |
Minimum surface oxidation |
| Excellent Conductivity |
Highest electrical conductivity of all metals |
| Recyclability |
100% recyclable |
| Antimicrobial Properties |
Exhibits natural antimicrobial activity |
11. SAFETY AND HEALTH INFORMATION
| Parameter |
Information |
| Hazard |
Not hazardous in solid metal form |
| Dust and Fumes |
Inhalation may be harmful (silver fumes) |
| Molten State |
Causes severe burns |
| During Melting |
Proper ventilation required |
| Carcinogenicity |
Not classified as carcinogenic |
| Argyria |
Prolonged exposure may cause blue-gray skin discoloration |
| Metal Powder |
May be combustible |
11.1. FIRST AID MEASURES
| Route of Exposure |
Action |
| Inhalation |
Remove to fresh air. Seek medical attention. |
| Skin Contact |
Wash with plenty of soap and water. |
| Eye Contact |
Rinse thoroughly with water. Seek medical attention. |
| Ingestion |
Seek medical attention. |
12. STORAGE AND HANDLING
| Parameter |
Information |
| Storage Conditions |
Cool, dry, well-ventilated area |
| Container Requirements |
Airtight, clean container |
| Protect From |
Moisture, sulfur compounds, acids, chlorides |
| Shelf Life |
Unlimited (with proper storage) |
| Tarnishing |
Tarnishes upon contact with sulfur compounds |
| Cleaning |
Silver cleaning solutions or mechanical polishing |
13. TRANSPORT INFORMATION
| Parameter |
Information |
| UN Number |
Not regulated (not a hazardous material) |
| Hazard Class |
Not applicable |
| Packing Group |
Not applicable |
| ADR/RID |
Not regulated |
| IMDG Code |
Not regulated |
| IATA (Air) |
Not regulated |
| Marine Pollutant |
No |
14. PACKAGING OPTIONS
| Packaging Type |
Quantity |
Material |
| Vacuum Pouch |
100 g – 1 kg |
PE / Aluminum laminate |
| Plastic Jar |
100 g – 500 g |
HDPE |
| Plastic Bucket |
1 – 5 kg |
HDPE |
| Wooden Crate |
10 – 25 kg |
Wood |
| Steel Drum |
25 – 50 kg |
Steel |
15. REGULATORY STATUS
| Region / Authority |
Status |
| European Union (REACH) |
Registered substance |
| USA (EPA) |
Registered substance |
| LBMA |
Good Delivery Standard |
| ISO 9001 |
Certified production |
16. OTHER NAMES AND SYNONYMS
| Type |
Name |
| Turkish Names |
Gümüş Granül, Saf Gümüş Granülü, Gümüş Tane, Kuyumcu Granülü |
| English Names |
Silver Granules, Fine Silver Granules, Pure Silver Beads, Silver Metal Granules, Silver Beads |
| Common Names |
Silver Grain, Silver Shot, White Metal Granules |
| Fineness |
999 Silver, 999.9 Silver |
| CAS Number |
7440-22-4 |
17. SUMMARY AND CRITICAL WARNINGS
Product Summary
| Parameter |
Value |
| Product |
Silver Granules |
| CAS Number |
7440-22-4 |
| Purity |
99.9% (999 fineness) |
| Appearance |
Bright white, rounded granules |
| Density |
10.49 g/cm³ |
| Melting Point |
961.8 °C |
| Primary Applications |
Jewelry, electronics, chemicals, investment |
CRITICAL WARNINGS
1. High Purity: Silver granules are typically produced at 99.9% purity (999 fineness). Known as fine silver.
2. Tarnishing Sensitivity: Silver tarnishes upon contact with sulfur compounds (formation of silver sulfide). Store in dry, sulfur-free environment.
3. Easy Melting: Melts at 961.8°C - relatively low temperature. Granule form provides fast, homogeneous melting.
4. Highest Conductivity: Has the highest electrical conductivity of all metals (100% IACS). Ideal for electronic applications.
5. Antimicrobial Properties: Used in medical and hygiene products due to natural antimicrobial activity.
6. Investment Value: Preferred for physical silver bullion investment.
7. Toxicology: Solid silver is non-toxic. However, inhalation of silver dust or fumes is harmful. Prolonged exposure may cause argyria (blue-gray skin discoloration).
8. Recycling: 100% recyclable with high scrap value.
9. Storage: Store in moisture-free, sulfur-free, dry environment. Keep away from sulfur-containing materials (rubber, wool, cardboard).
10. Applications: Jewelry and goldsmithing, electronics, chemical industry, investment, art and decoration, medical applications.
11. Melting Safety: Molten silver causes severe burns. Use appropriate protective equipment (gloves, goggles, apron).
12. Certification: Products should comply with LBMA Good Delivery standards.
IMPORTANT DISCLAIMER: This Technical Data Sheet (TDS) is for informational purposes only and is prepared based on available technical data. The user is responsible for determining the suitability of the product for their specific application and for complying with all local, national, and international regulations. For complete safety, storage, use, handling, disposal, and regulatory compliance information, refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. This document is not a substitute for professional or medical advice.
