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Europium Chloride, Europium Dichloride, 13769-20-5

Europium Chloride, Europium Dichloride, 13769-20-5

EUROPIUM CHLORIDE (EUCL₂)
EUROPIUM CHLORIDE / EUROPIUM DICHLORIDE / EUROPIUM(II) CHLORIDE
1. PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY

Parameter Information
Product Name Europium Chloride
Chemical Name Europium(II) Chloride, Europium Dichloride
Other Names EuCl₂
CAS Number 13769-20-5
EC Number (EINECS) 237-368-9
Chemical Formula EuCl₂
Molecular Weight 222.84 g/mol
Appearance White to pale yellow crystalline solid
Odor Odorless
Physical State (20°C) Solid (crystalline)

2. CHEMICAL STRUCTURE
2.1. Molecular Structure
Europium chloride is the chloride salt of the rare earth element europium. Europium ions (Eu²⁺) and chloride ions (Cl⁻) are present in a 1:2 ratio. It has an orthorhombic crystal structure. Due to its hygroscopic nature, it is sensitive to degradation in humid environments. It is soluble in water but reacts with moisture. It is a rare compound of europium in the +2 oxidation state.

Structural Features:

                    EUROPIUM CHLORIDE [EuCl₂]
                          |
                Eu²⁺ - Cl⁻ Ionic Bonds
                          |
        +----------------+----------------+
        |                |                |
    Orthorhombic       White-Yellow     Highly
    Crystal Structure  Crystalline     Hygroscopic

2.2. Structural Properties

Parameter Value
Crystal Structure Orthorhombic
Chemical Formula EuCl₂
Molecular Weight 222.84 g/mol
Density ~4.19 g/cm³
Appearance White to pale yellow crystalline solid
Melting Point ~820 °C
Oxidation State +2

3. PHYSICAL AND CHEMICAL PROPERTIES

Property Value Description
Appearance White to pale yellow crystalline solid -
Odor Odorless -
Chemical Formula EuCl₂ -
Molecular Weight 222.84 g/mol -
Density ~4.19 g/cm³ -
Melting Point ~820 °C -
Solubility in Water (25°C) Soluble -
Reactivity with Moisture Reacts Hygroscopic
Oxidation State +2 Unstable, oxidizes in air
Stability Hygroscopic; must be stored under inert atmosphere -
Hygroscopicity High Absorbs moisture from air

4. PURITY GRADES

Parameter Technical Grade High Purity Grade Analytical Grade
Purity (EuCl₂) ≥ 99.0% ≥ 99.5% ≥ 99.9%
Europium (Eu) Content ≥ 68.0% ≥ 68.5% ≥ 68.8%
Europium(III) (Eu³⁺) ≤ 1.0% ≤ 0.5% ≤ 0.1%
Other Rare Earths ≤ 1.0% ≤ 0.5% ≤ 0.1%
Iron (Fe) ≤ 100 ppm ≤ 50 ppm ≤ 20 ppm
Calcium (Ca) ≤ 100 ppm ≤ 50 ppm ≤ 20 ppm
Lead (Pb) ≤ 50 ppm ≤ 20 ppm ≤ 10 ppm
Chloride (Cl⁻) ≥ 31.0% ≥ 31.5% ≥ 31.8%
Loss on Drying Variable Variable Variable
Particle Size (D50) 10-50 µm 5-20 µm 1-10 µm

5. STABILITY AND REACTIVITY

Parameter Information
Chemical Stability Hygroscopic; stable under inert atmosphere. Slowly oxidizes in air.
Conditions to Avoid High humidity, exposure to open atmosphere, oxygen, prolonged air contact, high temperatures.
Incompatible Materials Strong oxidizing agents, water, acids, oxygen.
Hazardous Decomposition Products At high temperatures: hydrogen chloride (HCl) and europium oxychloride (EuOCl).
Hazardous Polymerization Will not occur.
Hygroscopicity High; when exposed to air, it absorbs moisture and oxidizes.

5.1. Chemical Reactions

  • Oxidation (in Air):
    4EuCl₂ + O₂ → 2EuOCl₂ + 2EuCl₃ (slow oxidation)

  • Hydrolysis (with Moisture):
    EuCl₂ + 2H₂O → Eu(OH)₂ + 2HCl

  • Behavior in Aqueous Solution:
    EuCl₂(aq) → Eu²⁺(aq) + 2Cl⁻(aq)

  • Precipitation with Alkali:
    EuCl₂ + 2NaOH → Eu(OH)₂↓ + 2NaCl

6. APPLICATION AREAS
6.1. LED and Display Technologies

Application Function Details
Phosphor Production Additive Used in LED and display technologies
Lighting Applications Light conversion Special phosphor formulations
Color Displays Colorant High-performance displays

6.2. Catalyst Applications

Application Function Details
Organic Synthesis Catalyst Various organic transformations
Polymerization Catalyst Polymerization initiator Some polymerization reactions

6.3. Electronics and Magnetic Materials

Application Function Details
Electronic Material Research Additive Semiconductor and magnetic materials
Magnetic Materials Magnetic properties Special magnetic applications
Optoelectronic Devices Active layer Advanced optoelectronics

6.4. Nuclear Industry

Application Function Details
Neutron Absorption Studies Neutron absorption Nuclear research applications
Nuclear Material Research Special nuclear applications Research and development

6.5. Sectoral Suitability Table

Sector Suitability Explanation
Electronics Suitable Semiconductors, magnetic materials
Lighting/LED Suitable Phosphor production, lighting
Ceramics/Glass Suitable Special ceramic and glass additives
Catalyst Suitable Organic synthesis, polymerization
Nuclear Suitable Neutron absorption studies
Water Treatment Not Suitable Not suitable
Food Not Suitable Not suitable
Cosmetics Not Suitable Not suitable

7. PRODUCTION PROCESS

Stage Process Description
1. Raw Material Preparation Europium(III) chloride (EuCl₃) High purity EuCl₃ obtained
2. Reduction Reduction with hydrogen gas 2EuCl₃ + H₂ → 2EuCl₂ + 2HCl
3. Cooling Controlled cooling Crystallization process
4. Purification Removal of impurities Chemical purification
5. Drying Controlled conditions Drying under inert atmosphere
6. Packaging Moisture-proof packaging Packaged under inert atmosphere due to hygroscopic nature

7.1. Alternative Production Method

Method Description
Direct Reaction Reaction of europium metal with hydrogen chloride gas: Eu + 2HCl → EuCl₂ + H₂↑

7.2. Major Producing Countries

Country Description
China Major producer
USA Rare earth production (Sigma-Aldrich, Alfa Aesar)
Germany High purity production
Japan High purity production

8. ALTERNATIVE / SUBSTITUTE PRODUCTS

Alternative Description When to Use
Europium(III) Chloride (EuCl₃) More stable and common When stable form is required
Europium Nitrate Europium source When different anion is required
Cerium Chloride (CeCl₃) Similar chemical properties When Ce is required
Lanthanum Chloride (LaCl₃) Similar chemical properties When La is required
Europium Oxide (Eu₂O₃) Europium source When oxide form is required

9. SAFETY AND TOXICOLOGY

Parameter Value
Acute Oral Toxicity (LD50, Rat) > 2,000 mg/kg (low toxicity)
Dermal Toxicity Low
Skin Irritation Mild to moderate irritant
Eye Irritation Serious irritant
Inhalation Dust inhalation may cause respiratory tract irritation.
Carcinogenicity Not classified as carcinogenic.
Mutagenicity Not mutagenic.
Chronic Effects Rare earth compounds have low bioavailability; however, high doses may cause liver effects.
Environmental Hazards Moderate aquatic toxicity; caution required due to chloride ion content.

9.1. GHS Classification

Hazard Class Category H-Statement
Skin Irritation Category 2 H315: Causes skin irritation.
Eye Irritation Category 2A H319: Causes serious eye irritation.
Specific Target Organ Toxicity Category 3 H335: May cause respiratory irritation.
Hazardous to the Aquatic Environment Category 2 H401: Toxic to aquatic life.

Signal Word: WARNING

Hazard Pictograms: GHS07 (Exclamation Mark)

10. PRECAUTIONARY STATEMENTS (P-CODES)

Code Statement
P261 Avoid breathing dust.
P264 Wash thoroughly after handling.
P271 Use only in well-ventilated areas.
P280 Wear protective gloves/eye protection/face protection.
P302+P352 IF ON SKIN: Wash with plenty of soap and water.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do.
P337+P313 If eye irritation persists: Get medical advice/attention.
P501 Dispose of contents/container in accordance with local regulations.

11. FIRST AID MEASURES

Exposure Route Action to Take
Inhalation Remove to fresh air. If symptoms persist, seek medical attention.
Skin Contact Wash with plenty of soap and water. Remove contaminated clothing. If irritation persists, seek medical attention.
Eye Contact Rinse thoroughly with plenty of water for at least 15 minutes. Remove contact lenses. If irritation persists, seek medical attention.
Ingestion Rinse mouth. Drink plenty of water. If large amount is swallowed, seek medical attention.

12. STORAGE AND SHELF LIFE

Parameter Condition
Storage Conditions Store in a cool, dry, and well-ventilated area. Store under inert atmosphere (Argon or Nitrogen).
Container Requirements Moisture-proof, airtight, tightly closed containers. Glass bottle or PTFE-lined containers.
Temperature Room temperature (15-25°C).
Shelf Life 12 months under appropriate conditions (sensitive to oxidation).
Stability Note Slowly oxidizes in air; rapidly degrades in humid environments. Must be stored under inert atmosphere.

13. PACKAGING OPTIONS

Packaging Type Quantity Material
Laboratory Packaging 1 g, 5 g, 10 g, 25 g Glass bottle, sealed cap, inert atmosphere
Laboratory Packaging 50 g, 100 g HDPE bottle, inert atmosphere
Industrial Packaging 25 kg Drum, inert atmosphere, moisture-proof

14. TRANSPORT INFORMATION

Parameter Information
UN Number Not classified (specific regulations apply for rare earth compounds)
Hazard Class -
Packing Group -
ADR/RID Not regulated
IMDG Not regulated
IATA Not regulated
HS Code 2846.90.00.00.19 (Other rare earth compounds)

15. REGULATORY STATUS

Region / Authority Status
European Union (REACH) Registered
Turkey (KKDIK) Compliance required
TSCA (USA) Registered
CLP/GHS Compliant
FDA/EFSA Not approved as a food additive
ISO 9001:2015 Production compliance

16. OTHER NAMES AND SYNONYMS

Name Description
Europium Dichloride Chemical name
Europium(II) Chloride Chemical name
EuCl₂ Chemical abbreviation
Europium Chloride (II) Alternative name
Europium Chloride English name
Europium Dichloride English name

17. QUICK REFERENCE TABLE

Property Value
CAS Number 13769-20-5
EC Number 237-368-9
Chemical Formula EuCl₂
Molecular Weight 222.84 g/mol
Appearance White to pale yellow crystalline solid
Density ~4.19 g/cm³
Melting Point ~820 °C
Oxidation State +2
HS Code 2846.90.00.00.19
GHS Signal Word WARNING

18. CRITICAL WARNINGS AND BEST PRACTICES

CRITICAL WARNINGS:

  • Oxidation Sensitivity: Europium(II) chloride slowly oxidizes in air to Europium(III) chloride. This affects purity and performance. Must be handled and stored under inert atmosphere.

  • Highly Hygroscopic Nature: EuCl₂ has a very high moisture absorption capacity. When exposed to air, it rapidly absorbs moisture and hydrolyzes. Extreme care must be taken to avoid moisture during storage and handling.

  • Rare Oxidation State: Europium's +2 oxidation state is less stable than +3 and requires special handling conditions.

  • Incompatibility: Reacts with strong oxidizing agents, water, and acids.

  • Eye and Skin Irritation: Causes irritation to skin and eyes. Protective equipment is mandatory during use.

BEST PRACTICE RECOMMENDATIONS:

  • Storage:

    • Store under inert atmosphere (Argon or Nitrogen), in a cool, dry, and well-ventilated area.

    • Use moisture-proof, airtight containers.

    • Keep away from oxidizing agents, moisture, and air.

    • Store at room temperature (15-25°C).

  • Handling:

    • Work in a glovebox or under inert atmosphere.

    • Immediately close containers tightly when not in use.

    • Use a dust mask (N95 or better), protective goggles, and chemically resistant gloves.

    • Avoid dust formation and inhalation.

    • Wash hands thoroughly after handling.

    • Avoid contact with water and moisture.

  • Waste Management:

    • Dispose of in accordance with local regulations as heavy metal waste.

    • Do not discharge into water sources or sewers.

    • For large quantities, rare earth recovery should be considered.

LEGAL DISCLAIMER
This Technical Data Sheet (TDS) is for informational purposes only and has been prepared based on available technical data. The user is solely responsible for determining the suitability of the product for their specific applications and for complying with all local, national, and international regulations. For complete safety, storage, handling, transport, disposal, and regulatory compliance information, the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier must be consulted. This document does not substitute professional advice. Europium(II) chloride requires special handling conditions due to its high reactivity and oxidation sensitivity; it must be used and stored under inert atmosphere.

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