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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
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99.99%,40mesh,powder
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Extra Pure 5G In Stock 22 USD
99.99%,40mesh,powder
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Extra Pure 100G In Stock 528 USD
99.99%,40mesh,powder
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Extra Pure 500G In Stock 2535 USD
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Extra Pure 1G In Stock 7 USD
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Extra Pure 5G In Stock 33 USD
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Extra Pure 25G In Stock 140 USD
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Extra Pure 100G In Stock 534 USD
99.99%,powder
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Extra Pure 500G In Stock 2563 USD
99.999%,1-3mm,grain
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Ultra Pure 1G In Stock 8 USD
99.999%,1-3mm,grain
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Ultra Pure 5G In Stock 35 USD
99.999%,1-3mm,grain
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Ultra Pure 25G In Stock 146 USD
99.999%,1-3mm,grain
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Ultra Pure 100G In Stock 512 USD
99.999%,100mesh,powder
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Ultra Pure 5G In Stock 77 USD
99.999%,100mesh,powder
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Ultra Pure 25G In Stock 345 USD
99.999%,100mesh,powder
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Ultra Pure 100G In Stock 1208 USD
99.999%,200mesh
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Ultra Pure 1G In Stock 8 USD
99.999%,200mesh
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Ultra Pure 5G In Stock 39 USD
99.999%,200mesh
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Ultra Pure 25G In Stock 108 USD
99.999%,200mesh
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Ultra Pure 100G In Stock 662 USD
99.999%,200mesh
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Ultra Pure 500G In Stock 2935 USD
granular,99.99%,1-3mm
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Extra Pure 1G In Stock 8 USD
granular,99.99%,1-3mm
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Extra Pure 25G In Stock 144 USD
granular,99.99%,1-3mm
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Extra Pure 100G In Stock 560 USD
granular,99.99%,1-3mm
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Extra Pure 500G In Stock 2790 USD
granular,99.9999%,1-5mm
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Ultra Pure 1G In Stock 10 USD
granular,99.9999%,1-5mm
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Ultra Pure 5G In Stock 44 USD
granular,99.9999%,1-5mm
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Ultra Pure 25G In Stock 179 USD
granular,99.9999%,1-5mm
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Ultra Pure 100G In Stock 698 USD
granular,99.9999%,1-5mm
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Ultra Pure 500G In Stock 3421 USD
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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]

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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

Q&A for CAS 7440-56-4

1. How can I verify product quality?
Every batch is tested in accordance with ISO 9001 requirements. We provide a Certificate of Analysis (COA), NMR spectrum, purity report, and test methods with each shipment. Third-party retesting is supported, and we offer a full refund if our data is incorrect.

2. What is the delivery time?
Orders are shipped on the second business day via FedEx, DHL, or UPS. International deliveries typically arrive within 7 business days (subject to customs clearance).

3. What if the received product doesn’t meet quality standards?
If the product does not match the COA or has a quality issue, we will issue a full refund or replacement upon verification.

4. Are hazardous labels included? How is safe shipping ensured?
Hazardous products are labeled and packaged in compliance with international regulations and shipped with an up-to-date Safety Data Sheet (SDS) to ensure safe and compliant transport.

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

6. Are volume discounts available?
Yes. We offer competitive pricing for bulk orders. Please submit a quotation request, and we’ll provide a customized offer.

7. Do you provide samples?
Yes, samples are available for select products for testing and validation. Please submit a sample request or contact our sales team to confirm availability and specifications.

8. Do you have products in stock?
Items marked “In Stock” on our website are ready 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 purity, packaging size, and special testing requirements. Please share your detailed needs, and we’ll provide a solution.

10. Is the COA consistent with the shipped batch?
Yes. The COA provided with your shipment matches the actual batch and includes the batch number. COAs shown online are for reference or from previous batches.

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

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

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

Retrosynthesis analysis of 7440-56-4


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