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structure of 7439-91-0

Lanthanum(CAS 7439-91-0)

CAS No.: 7439-91-0 Brand: MolBest
M. Ft.: La Cat. No: G5403591
M. Wt.: 138.91 MDL: MFCD00011066
Storage: Store in a cool,dry area. Use: For laboratory research use only
UN No.: UN 3264 8 /PG III
Purity Grade Package Stock Price Quantity
99.9%
Documents:COASDS
Extra Pure 5G In Stock 13 USD
99.9%
Documents:COASDS
Extra Pure 25G In Stock 30 USD
99.9%
Documents:COASDS
Extra Pure 100G In Stock 152 USD
99.9%
Documents:COASDS
Extra Pure 500G In Stock 719 USD
99.99%,200mesh
Documents:COASDS
Extra Pure 5G In Stock 13 USD
99.99%,200mesh
Documents:COASDS
Extra Pure 25G In Stock 50 USD
99.99%,200mesh
Documents:COASDS
Extra Pure 100G In Stock 155 USD
99.99%,200mesh
Documents:COASDS
Extra Pure 500G In Stock 719 USD
99.99%,200mesh
Documents:COASDS
Extra Pure 2.5KG In Stock 3257 USD
Granule 99.9% (Reduced state La/RE) 3-5cm
Documents:COASDS
Extra Pure 100G In Stock 149 USD
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Applications of 7439-91-0

Lanthanum has several important applications across various industries:

  • Catalysts: Lanthanum oxide is used as a catalyst in petroleum refining and in catalytic converters for automobiles.
  • Optical Glasses: Due to its high refractive index, lanthanum oxide is incorporated into optical glasses for lenses and prisms.
  • Phosphors: Lanthanum compounds are utilized in phosphorescent materials for lighting and display technologies.
  • Hydrogen Storage: Lanthanum hydride is explored for use in hydrogen storage systems due to its ability to absorb hydrogen gas.

Physical and chemical properties of 7439-91-0

Appearance of Characters

slugs

Boiling Point

3464 °C(lit.)

Density

6.19 g/mL at 25 °C(lit.)

Exact Mass

138.90600

Exposure Limits

ACGIH: TWA 2 ppm; STEL 4 ppm
OSHA: TWA 2 ppm(5 mg/m3)
NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3)

Melting Point

920 °C(lit.)

Merck

13,5379

Molecular Formula

La

Molecular Weight

138.90500

resistivity

54 μΩ-cm

Sensitivity

Air & Moisture Sensitive

Stability

Stable.

Water Solubility

slowly decomposes in H2O; readily attacked by mineral acids [MER06]

Retrosynthesis analysis of 7439-91-0


Q&A for CAS 7439-91-0

1. How can I verify product quality?
Every batch of our Chemical Reagents is tested to meet ISO 9001 standards. We provide COA & NMR & SDS Provided with each shipment. Batch COA available for verification, and third-party retesting is supported. A full refund is offered if our data is incorrect.

2. What is the delivery time?
Orders from Ready stock / In stock items typically Ships Tomorrow via Fast Shipping via FedEx/DHL/UPS. International deliveries usually arrive within 7 business days, subject to customs clearance.

3. What if the received product doesn’t meet quality standards?
If your Lab Grade Chemical Reagents do not match the Batch COA available, we will issue a replacement or a full refund upon verification.

4. Are hazardous labels included? How is safe shipping ensured?
Hazardous products are labeled and packaged following international regulations. We provide SDS Provided with all hazardous shipments to ensure safe and compliant transport.

5. Do you offer technical support?
Yes. Our Lab Supplier team is available to assist with questions about product usage, storage, Lab Grade requirements, applications, and more.

6. Are volume discounts available?
Yes. For bulk orders of Chemical Reagents, we offer competitive pricing. Submit a quotation request and we’ll provide a tailored offer.

7. Do you provide samples?
Yes, samples are available for selected Lab Grade products. Please submit a request to confirm availability and specifications.

8. Do you have products in stock?
Yes. Items labeled In stock / Ready stock on our website are available for immediate shipment, usually within 1–2 business days. Large packs or custom specifications require lead time confirmation.

9. Can you customize purity or packaging?
Yes. We support customization of Lab Grade purity, packaging size, and special testing requirements. Share your needs and we’ll provide a tailored solution.

10. Is the COA consistent with the shipped batch?
Yes. Batch COA available matches the actual shipment. COAs shown online are for reference or from previous batches.

11. Do you support long-term supply agreements?
Yes. We offer Lab Supplier services for stable batch consistency, pricing agreements, and safety stock for long-term customers to ensure uninterrupted supply.

12. What payment methods do you accept?
We accept Pay Local Currency via bank transfer (T/T), PayPal, and other methods. Credit terms are available for qualified long-term partners.

Download SDS of 7439-91-0

Pictograms

Signal Word

Danger

Hazard Statements

H228 Flammable solid
H260 In contact with water releases flammable gases which may ignite spontaneously

Safety Data Sheet

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Operate under the ISO 9001 system