Dysprosium Nitrate Hexahydrate, Dysprosium Nitrate Hydrate, Dysprosium Trinitrate Hexahydrate, 35725‑30‑5

DYSPROSIUM NITRATE HEXAHYDRATE (DYSPROSIUM(III) NITRATE) 

Chemical Name: Dysprosium(III) Nitrate Hexahydrate
CAS Number: 35725-30-5
EC Number: 609-062-9
UN Number: 1477 (Oxidizing substance)
Customs Tariff Code: 2846.90.00.00.19
HS Code: 283429

1. PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY

CHEMICAL STRUCTURE AND DESCRIPTION:

Dysprosium Nitrate Hexahydrate (Dy(NO₃)₃·6H₂O) is the nitrate salt of dysprosium in the +3 oxidation state, containing six molecules of water of crystallization. The compound features dysprosium ions coordinated by nitrate groups and water molecules. It is highly soluble in water and ethanol. The compound is highly hygroscopic and must be stored in airtight containers. Dysprosium compounds are critical for magnetic alloys (especially Nd-Fe-B magnets with dysprosium addition for temperature stability), optical applications, and advanced ceramic materials.

Structural Features:

• Hexahydrate form (6 water molecules)

• Highly water-soluble

• Light yellow-green appearance

• Highly hygroscopic

• Strong oxidizing properties (UN 1477)

• High magnetic susceptibility (paramagnetic)

2. PHYSICAL AND CHEMICAL PROPERTIES

Dysprosium Nitrate Hexahydrate is a light yellow-green, highly hygroscopic crystalline solid with a molecular weight of 438.52 g/mol. It is highly soluble in water and ethanol. The compound is a strong oxidizer and must be stored away from combustible materials. Dysprosium compounds exhibit high magnetic susceptibility and are critical for temperature-stable permanent magnets.

3. SOLUBILITY PROFILE

Dysprosium Nitrate is highly soluble in water and ethanol. This property makes it an ideal precursor for aqueous solution synthesis, precipitation reactions, and various material processing applications.

4. CHEMICAL PROPERTIES AND REACTIONS

Dysprosium Nitrate is a strong oxidizer and can support combustion when in contact with combustible materials. Its high solubility makes it an ideal precursor for the preparation of other dysprosium compounds via precipitation reactions. Upon heating, it decomposes to dysprosium oxide (Dy₂O₃) with the release of nitrogen dioxide (NO₂) and oxygen.

Key Chemical Reactions:

Synthesis (Acid Dissolution):
Dy₂O₃ + 6HNO₃ → 2Dy(NO₃)₃ + 3H₂O

Thermal Decomposition:
4Dy(NO₃)₃ → 2Dy₂O₃ + 12NO₂↑ + 3O₂↑

Hydroxide Precipitation:
Dy(NO₃)₃ + 3NaOH → Dy(OH)₃ ↓ + 3NaNO₃

Oxalate Precipitation:
2Dy(NO₃)₃ + 3H₂C₂O₄ → Dy₂(C₂O₄)₃ ↓ + 6HNO₃

5. SPECIFICATIONS (HIGH PURITY)

Dysprosium Nitrate Hexahydrate is available in high purity grades (≥ 99.9% rare earth purity) for research, optical, and electronic applications.

6. APPLICATIONS AND INDUSTRIAL USES

6.1. Magnetic Materials and Alloys (Most Important Application)

Dysprosium compounds are critical for high-performance permanent magnets. Dysprosium is added to Nd-Fe-B magnets to improve temperature stability and coercivity, making them suitable for electric vehicle motors and wind turbine generators operating at elevated temperatures.

6.2. Optical and Glass Applications

6.3. Advanced Ceramics

6.4. Catalyst and Chemical Synthesis

6.5. Research and Laboratory Applications

7. SECTOR SUITABILITY TABLE

8. COMMON NAMES

• Dysprosium nitrate salt

• Light yellow-green crystalline powder

• Rare earth nitrate

• Dysprosium trinitrate

• Magnetic alloy precursor

9. PRODUCTION PROCESS

Reaction Equation:
Dy₂O₃ + 6HNO₃ → 2Dy(NO₃)₃ + 3H₂O

Production Types: High purity grades (hexahydrate form)

Major Producing Countries: China, United States, Japan

Commercial Purity: 99.9% and above (rare earth purity)

10. SAFETY AND TOXICOLOGY

SPECIAL WARNINGS: Dysprosium Nitrate is classified as a strong oxidizer (UN 1477) . It may intensify fire when in contact with combustible materials. Harmful if swallowed (H302) . The product is for research use only; not for therapeutic or food applications.

11. TRANSPORT INFORMATION

Dysprosium Nitrate is classified as an oxidizing substance (UN 1477, Class 5.1) . Transport must be conducted away from combustible and flammable materials.

12. REGULATORY INFORMATION

Dysprosium Nitrate is registered in all major industrial markets. KKDİK registration is required for use in Turkey.

13. STORAGE AND HANDLING

Handling Notes:

• CRITICAL: This compound is a strong oxidizer (UN 1477). Keep away from combustible materials .

• Avoid dust formation and inhalation

• Avoid skin and eye contact (use protective gloves and safety goggles)

• Use in well-ventilated areas

• Store in airtight containers away from moisture

• Separate from reducing agents, organic substances, and flammable materials

• Protect from light

• Due to highly hygroscopic nature, handle in dry conditions

14. FIRE-FIGHTING MEASURES

Dysprosium Nitrate is not flammable but is a strong oxidizer that may intensify fire when in contact with combustible materials . Thermal decomposition may release toxic nitrogen oxides .

15. ACCIDENTAL RELEASE MEASURES

In case of spillage, appropriate personal protective equipment must be worn. Due to its oxidizing nature, avoid contact with combustible materials. Clean up using dry methods.

16. FIRST AID MEASURES

Special Notes:

• Nitrate salts can cause methemoglobinemia in cases of severe ingestion

• Medical personnel should be informed about nitrate salt exposure

• In case of ingestion, do not induce vomiting due to possible aspiration risk

17. RAW MATERIALS AND DOWNSTREAM PRODUCTS

17.1. Raw Materials (Upstream)

17.2. Downstream Products

18. QUALITY CONTROL PARAMETERS

19. SUMMARY AND CRITICAL WARNINGS

SUMMARY:

Dysprosium Nitrate Hexahydrate (Dy(NO₃)₃·6H₂O, CAS 35725-30-5) is a light yellow-green, highly hygroscopic crystalline solid with a molecular weight of 438.52 g/mol. It is highly soluble in water and ethanol. Thermal decomposition yields dysprosium oxide (Dy₂O₃).

Its most important application is as a precursor for dysprosium compounds used in high-performance magnetic materials. Dysprosium is critical in Nd-Fe-B magnets for improving high-temperature stability and coercivity for electric vehicle motors and wind turbine generators . It is also used in advanced ceramics, specialty glasses, optical materials, and as a laboratory reagent for rare earth chemistry research.

The compound is classified as a strong oxidizer (UN 1477, Class 5.1) . It may intensify fire when in contact with combustible materials. It is harmful if swallowed (H302) . Due to its highly hygroscopic nature, it must be stored in airtight containers away from moisture and away from combustible and reducing agents. Shelf life is approximately 2 years under proper storage conditions.

Key Properties:

Major Application Areas:

Key Safety Points:

• OXIDIZER: UN 1477, Class 5.1, Packing Group II

• OXIDIZER: H272 (May intensify fire; oxidizer)

• HARMFUL: H302 (Harmful if swallowed)

• HYGROSCOPIC: Must be stored in airtight containers

• STORAGE: Cool, dry, away from combustibles

• PROTECTIVE EQUIPMENT: Gloves, safety goggles, dust mask

CRITICAL WARNINGS:

1. STRONG OXIDIZER (UN 1477): Dysprosium Nitrate is classified as a strong oxidizer (UN 1477, Class 5.1). It may intensify fire when in contact with combustible materials . Store separately from reducing agents, organic substances, and flammable materials.

2. HIGH SOLUBILITY: With excellent water solubility, Dysprosium Nitrate is ideal for aqueous processing, precipitation reactions, and material synthesis.

3. HIGHLY HYGROSCOPIC: Dysprosium Nitrate is highly hygroscopic. It must be stored in airtight containers and handled in dry conditions .

4. MAGNETIC APPLICATIONS: Dysprosium is critical for high-performance permanent magnets, particularly in Nd-Fe-B magnets for electric vehicle motors and wind turbine generators where high-temperature stability is required.

5. CUSTOMS CLASSIFICATION: The correct customs tariff code is 2846.90.00.00.19 (HS Code: 283429).

6. REGULATORY COMPLIANCE: REACH, KKDİK, and TSCA registration requirements apply. Not permitted for food, cosmetic, or pharmaceutical applications.

7. FIRE SAFETY: In case of fire, use water spray, CO₂, or dry chemical powder. Fire may release toxic nitrogen oxide fumes. Firefighters should use SCBA and full protective clothing.

Important Disclaimer: This Technical Data Sheet (TDS) is for informational purposes only. The information provided is based on available data and is believed to be accurate. However, the user is solely responsible for determining the suitability of the product for their specific applications and for complying with all applicable regulations and safety requirements. For complete safety, handling, storage, and regulatory compliance information, always refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. Users are responsible for testing the product in their own processes and applications. All local, national, and international regulations must be followed when working with Dysprosium Nitrate. Due to its oxidizing nature, hygroscopicity, and environmental classification, a detailed risk assessment and handling procedure must be established prior to use.