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Tantalum Powder, Tantalum Metal Powder, 7440-25-7

Tantalum Powder, Tantalum Metal Powder, 7440-25-7

TANTALUM POWDER (TANTALUM METAL POWDER / TANTALUM POWDER)

PRODUCT IDENTIFICATION INFORMATION

Parameter Information
Product Name Tantalum Powder / Tantalum Metal Powder
Other Technical Names Tantalum Powder, Capacitor Grade Tantalum Powder, Metallurgical Grade Tantalum Powder, High Purity Tantalum Powder
CAS Number 7440-25-7
Chemical Symbol Ta
Atomic Number 73
Atomic Weight 180.95 g/mol
Product Family Refractory Metal (Noble Metal)
Appearance Grey metallic powder

CHEMICAL STRUCTURE

    Tantalum Powder (Ta)
    
    Body-Centered Cubic (BCC) Crystal Structure
    
         Ta  Ta  Ta  Ta
           \  |  /  |
            Ta Ta Ta Ta
           /  |  \  |
         Ta  Ta  Ta  Ta
    
    Body-Centered Cubic (BCC) Crystal Structure
    Refractory Metal
    Very High Melting Point (3017°C)
    High Corrosion Resistance
    Used in Capacitor and Medical Applications

Molecular Formula: Ta (Elemental)
Crystal Structure: Body-Centered Cubic (BCC)
Electron Configuration: [Xe] 4f¹⁴ 5d³ 6s²
Oxidation States: +5 (primarily)
Melting Point: 3017°C
Boiling Point: 5458°C
Density: 16.5-16.65 g/cm³

SECTION 1: CHEMICAL IDENTITY AND DEFINITION

Parameter Information
Product Name Tantalum Powder / Tantalum Metal Powder
Other Technical Names (English) Tantalum Powder, Tantalum Metal Powder, Capacitor Grade Tantalum Powder, Metallurgical Grade Tantalum Powder, High Purity Tantalum Powder
Other Technical Names (Turkish) Tantal Tozu, Tantal Metal Tozu, Kondansatör Sınıfı Tantal Tozu, Metalurji Sınıfı Tantal Tozu, Yüksek Saflıkta Tantal Tozu
Other Technical Names (German) Tantalpulver, Tantalmetallpulver
Other Technical Names (French) Poudre de Tantale, Poudre de Tantale Métallique
Other Technical Names (Spanish) Polvo de Tántalo, Polvo de Tántalo Metálico
CAS Number 7440-25-7
Chemical Symbol Ta
Atomic Number 73
Atomic Weight 180.95 g/mol
Chemical Class Refractory Metal (Noble Metal)
Crystal Structure Body-Centered Cubic (BCC)
Electron Configuration [Xe] 4f¹⁴ 5d³ 6s²
Oxidation States +5 (primarily)
Appearance Grey metallic powder
Odor Odorless
Color Grey
Magnetic Properties Non-magnetic (paramagnetic)

SECTION 2: PHYSICAL AND CHEMICAL PROPERTIES

Property Value Test Method / Note
Appearance Grey metallic powder Visual
Atomic Weight 180.95 g/mol Calculated
Density 16.5-16.65 g/cm³ ASTM D792
Melting Point 3017°C Highest after Tungsten and Rhenium
Boiling Point 5458°C -
Hardness (HV10) 80-110 Depends on diameter and processing
Tensile Strength 110-250 MPa Annealed or unannealed condition
Elongation (Fracture) 20% (annealed); 5% (unannealed) ASTM E8
Electrical Conductivity 7.9 × 10⁶ S/m (at 300 K) ASTM E1004
Thermal Conductivity 57.5 W/m·K -
Specific Heat (25°C) 0.14 J/g·K -
Electrical Resistivity 12.4 × 10⁻⁸ Ω·m -
Thermal Expansion Coefficient 6.3 × 10⁻⁶ /°C -
Corrosion Resistance Exceptional Resistant to acids and liquid metals
Magnetic Properties Non-magnetic -
Biocompatibility High Compatible with the body
Dielectric Property High dielectric constant Surface oxide film

SECTION 3: CHEMICAL PROPERTIES AND REACTIVITY

Parameter Information
Chemical Character Refractory metal; noble metal; exceptional corrosion resistance; high melting point; biocompatible
Stability Stable under normal conditions; Forms passive oxide layer (Ta₂O₅) on surface; Corrosion resistant
Reactivity Exceptionally resistant to acids; Soluble in hydrofluoric acid (HF) and hot sulfuric acid; Reacts with halogens at high temperatures
Incompatible Materials Hydrofluoric acid, hot sulfuric acid, halogens, molten alkalis
Corrosion Resistance Exceptional; Forms passive oxide layer (Ta₂O₅); Resistant to most acids and liquid metals
Acid Reaction Ta + HF → TaF₅ + H₂ (in hydrofluoric acid)
Oxidation 4Ta + 5O₂ → 2Ta₂O₅ (protective oxide layer)
Special Property Surface oxide film has high dielectric constant; Plays critical role in capacitors; Biocompatible

SECTION 4: TANTALUM POWDER GRADES

Grade Purity (%) Particle Size Application Areas
Capacitor Grade ≥ 99.9% < 150 µm Electronic capacitors
Metallurgical Grade ≥ 99.9% < 250 µm Superalloys, high-temperature parts
High Purity ≥ 99.99% < 75 µm Medical implants, precision applications
Spherical Powder (3D Printing) ≥ 99.95% 15-45 µm 3D printing, advanced manufacturing

SECTION 5: TANTALUM POWDER CLASSIFICATION AND INDUSTRY SUITABILITY

Industry Suitability Level Key Features
Electronics ⭐⭐⭐⭐⭐ High dielectric constant, capacitor production
Metallurgy ⭐⭐⭐⭐ Superalloy additive, high-temperature resistance
Chemical Industry ⭐⭐⭐⭐ Acid and corrosion resistance
Medical ⭐⭐⭐⭐ Biocompatibility, implants and surgical instruments
Aerospace & Space ⭐⭐⭐⭐ High melting point, superalloys
3D Printing ⭐⭐⭐ Spherical powder form, advanced manufacturing

SECTION 6: FUNCTIONAL PROPERTIES AND MECHANISM OF ACTION

Property Explanation
High Melting Point With a melting point of 3017°C, it is one of the metals with the highest melting point after tungsten and rhenium. Ideal for high-temperature applications.
Corrosion Resistance Exceptionally resistant to acids and liquid metals. Forms passive oxide layer (Ta₂O₅) on surface.
Processability High cold forming capability, good weldability and forgeability.
Biocompatibility Preferred in medical implants because it is compatible with the body. Not rejected by the body.
Dielectric Property Surface oxide film has high dielectric constant. This property plays a critical role in capacitors.
Electrical Conductivity High electrical conductivity (7.9 × 10⁶ S/m) suitable for electronic applications.

SECTION 7: MAIN APPLICATION AREAS

7.1 Electronics Industry

Application Area Explanation
Capacitors Production of high-capacitance tantalum capacitors
Microchips Provides stability in power management circuits
Automotive Electronics Durable and long-life capacitors

7.2 Metallurgy Industry

Application Area Explanation
Superalloys High-temperature resistance in jet engine and turbine parts
Hard Metal Additive Increases mechanical strength
High-Temperature Parts Furnace components, heat shields

7.3 Chemical Industry

Application Area Explanation
Reactors Acid-resistant surface coatings
Heat Exchangers Corrosion-resistant metal parts
Laboratory Equipment Long-life use in aggressive environments

7.4 Medical Industry

Application Area Explanation
Implants Biocompatible, not rejected by the body
Surgical Instruments Durable and sterilizable
Dental Applications Dental implants and fixation parts

7.5 Aerospace & Space Industry

Application Area Explanation
Jet Engines High-temperature resistance in superalloys
Space Vehicles Lightweight and durable parts
Turbine Blades Long life due to high melting point

7.6 3D Printing Industry

Application Area Explanation
Spherical Powder Use Provides smooth flow in additive manufacturing
Prototype Production High-strength metal parts
Advanced Manufacturing Special alloys and medical implant production

SECTION 8: TANTALUM CAPACITOR APPLICATIONS - DETAILED EXPLANATION

Parameter Explanation
Operating Principle Tantalum powder is pressed and sintered; Ta₂O₅ dielectric layer is formed on the surface; High capacitance is achieved
Dielectric Constant Ta₂O₅ film has high dielectric constant (~27)
Advantages High capacitance; Small size; Long life; Stable performance; Wide temperature range
Application Areas Phones; Computers; Automotive electronics; Medical devices; Defense systems

SECTION 9: QUALITY SPECIFICATIONS

Parameter Capacitor Grade Metallurgical Grade High Purity Test Method
Appearance Grey metallic powder Grey metallic powder Grey metallic powder Visual
Purity (Ta) ≥ 99.9% ≥ 99.9% ≥ 99.99% AAS / ICP / GDMS
Oxygen (O) ≤ 0.1% ≤ 0.1% ≤ 0.05% LECO / Inert Gas Fusion
Nitrogen (N) ≤ 0.02% ≤ 0.02% ≤ 0.01% LECO / Inert Gas Fusion
Carbon (C) ≤ 0.01% ≤ 0.01% ≤ 0.005% Combustion / ICP
Iron (Fe) ≤ 0.01% ≤ 0.01% ≤ 0.005% AAS / ICP / GDMS
Niobium (Nb) ≤ 0.01% ≤ 0.01% ≤ 0.005% AAS / ICP / GDMS
Molybdenum (Mo) ≤ 0.01% ≤ 0.01% ≤ 0.005% AAS / ICP / GDMS
Tungsten (W) ≤ 0.01% ≤ 0.01% ≤ 0.005% AAS / ICP / GDMS
Particle Size < 150 µm < 250 µm < 75 µm Sieve analysis
Form Metallic powder Metallic powder Metallic powder Visual

SECTION 10: TOXICOLOGICAL PROFILE

Parameter Value
Acute Oral Toxicity Low toxicity (metallic form)
Acute Inhalation Toxicity Dust inhalation may cause irritation
Skin Irritation Metallic form is not irritating
Eye Irritation Metallic form is not irritating
Chronic Toxicity Tantalum compounds show low toxicity
Carcinogenicity Not classified as carcinogenic
Mutagenicity Not classified as mutagenic
Target Organs Respiratory system (dust irritation)
Occupational Exposure Limit (8h TWA) 5 mg/m³ (Ta dust)
Special Toxicity Note Metallic tantalum is non-toxic; Fine dust may cause respiratory irritation; Appropriate dust control measures should be used; Tantalum compounds generally have low toxicity

SECTION 11: GHS CLASSIFICATION AND LABELING

GHS Classification (in compliance with CLP and UN GHS):

Hazard Class Category H-Statement
Flammable Powders Category 1 H228 (optional)
STOT - SE (Single Exposure) Category 3 H335 (optional)

Note: Not classified as hazardous in solid state. However, fine powder may be flammable and dust inhalation may cause irritation.

Signal Word: WARNING (optional)

Hazard Pictograms: GHS02 (Flammable - for powder), GHS07 (optional)

Hazard Statements (H-Codes) - if classified:

Code Statement
H228 Flammable solid
H335 May cause respiratory irritation

SECTION 12: PRECAUTIONARY STATEMENTS (P-CODES)

Code Statement
P210 Keep away from heat/sparks/open flames/hot surfaces
P261 Avoid breathing dust/fume/gas/mist/vapors/spray
P264 Wash hands thoroughly after handling
P271 Use only outdoors or in a well-ventilated area
P280 Wear protective gloves/protective clothing/eye protection/face protection
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing
P312 Call a POISON CENTER/doctor if you feel unwell
P362+P364 Take off contaminated clothing and wash it before reuse
P403+P233 Store in a well-ventilated place. Keep container tightly closed
P501 Dispose of contents/container in accordance with local/regional/national/international regulations

SECTION 13: FIRST AID MEASURES

Exposure Route Action to Take
Inhalation Move to fresh air immediately. Keep at rest in a position comfortable for breathing. If symptoms persist, get medical attention.
Skin Contact Wash with plenty of soap and water. Remove contaminated clothing. If skin irritation occurs, get medical advice/attention.
Eye Contact Rinse immediately with plenty of water for at least 15 minutes. Keep eyelids open. Remove contact lenses. Continue rinsing. If eye irritation persists, get medical advice/attention.
Ingestion Rinse mouth with water. Do NOT induce vomiting. Drink plenty of water. If symptoms develop, get medical attention.

SECTION 14: FIRE-FIGHTING MEASURES

Parameter Information
Fire Hazard Not flammable (ingot). Flammable in powder form. Fine dust may form explosive mixtures with air under certain conditions.
Hazards During Fire May release tantalum oxide fumes at high temperatures
Suitable Extinguishing Media Dry chemical powder, CO₂, sand, Class D extinguishers
Unsuitable Extinguishing Media Water (for powder)
Special Protective Equipment Self-contained breathing apparatus (SCBA), full protective clothing
Special Precautions Prevent dust from entering sewers and waterways; Do not inhale fumes

SECTION 15: STORAGE AND SHELF LIFE

Parameter Information
Storage Conditions Cool, dry, well-ventilated area; Away from acids and oxidizing agents; Keep in original packaging
Container Requirements Keep in original packaging, dry containers; Protect from corrosion; Airtight containers
Materials to Protect From Strong acids, oxidizing agents, halogens, moisture
Shelf Life Unlimited (under proper storage conditions)
Stability Note Stable under normal conditions; May form oxide layer on surface; Protect from moisture

SECTION 16: PACKAGING OPTIONS

Packaging Type Quantity Material
Plastic Drum 25-50 kg HDPE (airtight)
Plastic Bucket 5-25 kg HDPE (airtight)
Glass Bottle 100 g - 2 kg Glass (airtight)
Plastic Bag 1-10 kg PE (sealed)
Steel Drum 100-500 kg Corrosion-resistant lined steel

SECTION 17: TRANSPORT INFORMATION

Parameter Information
UN Number 3089 (Metal powder, flammable, n.o.s.)
Hazard Class 4.1 (Flammable solids)
Packing Group II or III
ADR/RID 4.1, PG II/III
IMDG Code 4.1, PG II/III
IATA (Air) 4.1, PG II/III
Marine Pollutant No
Transport Temperature Ambient temperature; Protect from moisture

SECTION 18: OTHER NAMES AND SYNONYMS

Type Name
Turkish Names Tantal Tozu, Tantal Metal Tozu, Kondansatör Sınıfı Tantal Tozu, Metalurji Sınıfı Tantal Tozu, Yüksek Saflıkta Tantal Tozu
English Names Tantalum Powder, Tantalum Metal Powder, Capacitor Grade Tantalum Powder, Metallurgical Grade Tantalum Powder, High Purity Tantalum Powder
German Names Tantalpulver, Tantalmetallpulver
French Names Poudre de Tantale, Poudre de Tantale Métallique
Spanish Names Polvo de Tántalo, Polvo de Tántalo Metálico
Chemical Names Tantalum (elemental form); Tantalum metal
CAS Number 7440-25-7
Atomic Symbol Ta
Atomic Number 73

SECTION 19: SUMMARY TABLE

Parameter Value
Product Tantalum Powder / Tantalum Metal Powder
CAS Number 7440-25-7
Atomic Number 73
Atomic Weight 180.95 g/mol
Appearance Grey metallic powder
Density 16.5-16.65 g/cm³
Melting Point 3017°C
Boiling Point 5458°C
Hardness (HV10) 80-110
Electrical Conductivity 7.9 × 10⁶ S/m
Magnetic Properties Non-magnetic
Primary Function Refractory metal; Capacitor material; Alloy additive
Main Applications Electronics, metallurgy, chemical, medical, aerospace, 3D printing
Shelf Life Unlimited
GHS Signal Word WARNING (optional)
UN Number 3089
Hazard Class 4.1 (Flammable solids)
Special Features Very high melting point; Exceptional corrosion resistance; Biocompatible; High dielectric constant

SECTION 20: CRITICAL WARNINGS AND BEST PRACTICES

CRITICAL WARNINGS:

  1. Rare and expensive: Limited worldwide production. Use sparingly and pay attention to recycling.

  2. Powder form: Fine particles should not be inhaled; appropriate protective equipment should be used.

  3. Flammable in powder form. Fine dust may form explosive mixtures with air under certain conditions.

  4. Ethical sourcing: Tantalum mining is known as a "conflict mineral" in some regions. It is important to source from certified suppliers.

  5. Exceptionally resistant to acids but soluble in hydrofluoric acid (HF) and hot sulfuric acid.

  6. High melting point (3017°C) requires special equipment during processing.

  7. Biocompatible but powder form may be irritating.

  8. Incompatibilities: Hydrofluoric acid, hot sulfuric acid, halogens, molten alkalis.

  9. Hygiene Requirement: Wash hands thoroughly after use.

BEST PRACTICE RECOMMENDATIONS:

10. Capacitor Production:
Use capacitor grade tantalum powder for high-capacitance tantalum capacitors. Ensure high purity and appropriate particle size.

11. Superalloy Production:
Use metallurgical grade tantalum powder for high-temperature resistance in jet engine and turbine parts.

12. Chemical Equipment:
Use tantalum coating or tantalum parts for acid-resistant reactors and heat exchangers.

13. Medical Implants:
Use high-purity tantalum powder for biocompatible implants and surgical instruments.

14. 3D Printing:
Use spherical tantalum powder for additive manufacturing. Ensure smooth flow and high density.

15. Use:
Use in well-ventilated areas; Avoid dust formation; Wear protective gloves, safety goggles and appropriate respiratory protection.

16. Personal Protective Equipment:
Use safety goggles, protective clothing, protective gloves (nitrile, neoprene), NIOSH approved dust mask (if dust is present).

17. Hygiene:
Do not eat, drink or smoke while using; Wash hands thoroughly after use; Do not take contaminated work clothes home.

18. Storage:
Store in cool, dry, well-ventilated area; Keep away from acids and oxidizing agents; Store in closed, airtight containers.

19. Spill Response:
Avoid dust formation; Vacuum or sweep; Place in closed containers; Do not allow to enter drains or waterways.

20. Disposal:
Dispose in accordance with local, regional and national regulations; Tantalum is rare and valuable, so recycling is preferred.

TANTALUM POWDER SELECTION GUIDE:

Application Recommended Grade Explanation
Capacitor production Capacitor Grade (≥99.9%) High purity, appropriate particle size
Superalloys Metallurgical Grade (≥99.9%) High purity, appropriate particle size
Medical implants High Purity (≥99.99%) Highest purity, biocompatibility
3D printing Spherical Powder (≥99.95%) Spherical morphology, smooth flow
Research High Purity (≥99.99%) Highest purity

RECOMMENDED STORAGE CONDITIONS:

Parameter Requirement
Storage Temperature Room temperature (15-25°C)
Humidity <60% relative humidity
Container Airtight containers
Location Cool, dry, well-ventilated area; Away from acids and oxidizing agents

ETHICAL SOURCING WARNING:

Tantalum mining is known as a "conflict mineral" in some regions. Therefore, when sourcing tantalum powder, ensure that it is obtained from certified and ethical sources (e.g., ITRI Tantalum Certificate or Conflict-Free Smelter Program).

ENVIRONMENTAL NOTE:

Tantalum is a rare element and recycling is environmentally important. Used tantalum products should be recycled and waste management should be carefully considered.

LEGAL DISCLAIMER:

The information provided in this document is based on our current knowledge and experience and is provided in good faith; however, since all conditions of use are beyond our control, it does not constitute a binding specification or warranty. This Technical Data Sheet is for informational purposes only. Users are responsible for testing suitability for their own applications. For complete safety, storage, use, handling, disposal and regulatory compliance information, reference should be made to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier.

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