Dangerous Goods
structure of 7440-56-4

Germanium(CAS 7440-56-4)

CAS No.: 7440-56-4 Brand: MolBest
M. Ft.: Ge Cat. No: G5456490
M. Wt.: 72.64 MDL: MFCD00085310
Storage: Store in a cool,dry area. Use: For laboratory research use only
UN No.: UN 3089 4.1 /PG II
Purity Grade Package Stock Price Quantity
99.99%,40mesh,powder
Documents:COASDS
Extra Pure 1G In Stock 8 USD
99.99%,40mesh,powder
Documents:COASDS
Extra Pure 5G In Stock 22 USD
99.99%,40mesh,powder
Documents:COASDS
Extra Pure 25G In Stock 148 USD
99.99%,40mesh,powder
Documents:COASDS
Extra Pure 100G In Stock 528 USD
99.99%,40mesh,powder
Documents:COASDS
Extra Pure 500G In Stock 2535 USD
99.99%,powder
Documents:COASDS
Extra Pure 1G In Stock 7 USD
99.99%,powder
Documents:COASDS
Extra Pure 5G In Stock 33 USD
99.99%,powder
Documents:COASDS
Extra Pure 25G In Stock 140 USD
99.99%,powder
Documents:COASDS
Extra Pure 100G In Stock 534 USD
99.99%,powder
Documents:COASDS
Extra Pure 500G In Stock 2563 USD
99.999%,1-3mm,grain
Documents:COASDS
Ultra Pure 1G In Stock 8 USD
99.999%,1-3mm,grain
Documents:COASDS
Ultra Pure 5G In Stock 35 USD
99.999%,1-3mm,grain
Documents:COASDS
Ultra Pure 25G In Stock 164 USD
99.999%,1-3mm,grain
Documents:COASDS
Ultra Pure 100G In Stock 635 USD
99.999%,1-3mm,grain
Documents:COASDS
Ultra Pure 500G In Stock 3106 USD
99.999%,100mesh,powder
Documents:COASDS
Ultra Pure 250MG In Stock 6 USD
99.999%,100mesh,powder
Documents:COASDS
Ultra Pure 1G In Stock 20 USD
99.999%,100mesh,powder
Documents:COASDS
Ultra Pure 5G In Stock 77 USD
99.999%,100mesh,powder
Documents:COASDS
Ultra Pure 25G In Stock 345 USD
99.999%,100mesh,powder
Documents:COASDS
Ultra Pure 100G In Stock 1208 USD
99.999%,200mesh
Documents:COASDS
Ultra Pure 1G In Stock 8 USD
99.999%,200mesh
Documents:COASDS
Ultra Pure 5G In Stock 39 USD
99.999%,200mesh
Documents:COASDS
Ultra Pure 25G In Stock 108 USD
99.999%,200mesh
Documents:COASDS
Ultra Pure 100G In Stock 662 USD
99.999%,200mesh
Documents:COASDS
Ultra Pure 500G In Stock 2935 USD
granular,99.99%,1-3mm
Documents:COASDS
Extra Pure 1G In Stock 8 USD
granular,99.99%,1-3mm
Documents:COASDS
Extra Pure 5G In Stock 31 USD
granular,99.99%,1-3mm
Documents:COASDS
Extra Pure 25G In Stock 144 USD
granular,99.99%,1-3mm
Documents:COASDS
Extra Pure 100G In Stock 560 USD
granular,99.99%,1-3mm
Documents:COASDS
Extra Pure 500G In Stock 2790 USD
granular,99.9999%,1-5mm
Documents:COASDS
Ultra Pure 1G In Stock 10 USD
granular,99.9999%,1-5mm
Documents:COASDS
Ultra Pure 5G In Stock 44 USD
granular,99.9999%,1-5mm
Documents:COASDS
Ultra Pure 25G In Stock 179 USD
granular,99.9999%,1-5mm
Documents:COASDS
Ultra Pure 100G In Stock 698 USD
granular,99.9999%,1-5mm
Documents:COASDS
Ultra Pure 500G In Stock 3421 USD
Your region is eligible for ordering.
Should you have any questions, please contact us by Email.
Batch COA
Available
NMR Spectrum
Verified
In Stock
Fast Shipping
ISO 9001
Quality System

Quick Links

Applications of 7440-56-4

Germanium has numerous applications across various fields:

  • Electronics: It is widely used in semiconductor devices, including transistors and diodes.
  • Optics: Due to its high refractive index and transparency to infrared light, germanium is used in fiber-optic systems and infrared optics.
  • Catalysts: Germanium compounds serve as catalysts in the production of polymers and other chemical processes.
  • Military

Physical and chemical properties of 7440-56-4

Boiling Point

2700 °C

Density

INTRINSIC CHARGE DENSITY @ 300 DEG K= 2.4X10+13; ELECTRON DIFFUSION CONSTANT @ 300 DEG K= 100

Exact Mass

73.921181

Exposure Limits

ACGIH: TWA 0.5 ppm(2.5 mg/m3); Ceiling 2 ppm (Skin)
OSHA: TWA 3 ppm
NIOSH: IDLH 30 ppm(250 mg/m3); TWA 3 ppm(2.5 mg/m3); Ceiling 6 ppm(5 mg/m3)

Index of Refraction

IS HIGHLY TRANSPARENT TO INFRARED LIGHT; HAS A HIGH INDEX OF REFRACTION

LogP

0.06920

Melting Point

Heat of fusion at melting point = 3.18X10+7 J/kmol.

Merck

13,4419

Molecular Formula

Ge

Molecular Weight

72.640

resistivity

53000 μΩ-cm, 20°C

Stability

Stable. Slightly soluble in strong acids. Incompatible with strong oxidizing agents.

Storage condition

Flammables area

Vapour Pressure

0 mm Hg @ 25 °C

Water Solubility

insoluble H2O, HCl, dilute alkali hydroxides; attacked by aqua regia [MER06]

Retrosynthesis analysis of 7440-56-4


Q&A for CAS 7440-56-4

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 7440-56-4

Pictograms

Signal Word

Danger

Hazard Statements

H228 Flammable solid
H361 Suspected of damaging fertility or the unborn child
H373 May causes damage to organs through prolonged or repeated exposure
H412 Harmful to aquatic life with long lasting effects

Safety Data Sheet

Download COA of 7440-56-4

Operate under the ISO 9001 system