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structure of 7440-33-7

Tungsten(CAS 7440-33-7)

CAS No.: 7440-33-7 Brand: MolBest
M. Ft.: W Cat. No: G9339904
M. Wt.: 183.84 MDL: MFCD00011461
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
99.9%,200nm,powder
Documents:COASDS
Extra Pure 100G In Stock 74 USD
99.9%,50nm
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Extra Pure 1G In Stock 5 USD
99.9%,50nm
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Extra Pure 5G In Stock 13 USD
99.9%,50nm
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Extra Pure 25G In Stock 34 USD
99.9%,50nm
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Extra Pure 100G In Stock 97 USD
99.9%,50nm
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Extra Pure 500G In Stock 527 USD
99.95%,1-3μm
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Extra Pure 25G In Stock 13 USD
99.95%,1-3μm
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Extra Pure 100G In Stock 25 USD
99.95%,1-3μm
Documents:COASDS
Extra Pure 500G In Stock 132 USD
99.95%,1-3μm
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Extra Pure 2.5KG In Stock 620 USD
99.95%,1-3μm
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Extra Pure 10KG In Stock 2416 USD
99.95%,325mesh
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Extra Pure 25G In Stock 11 USD
99.95%,325mesh
Documents:COASDS
Extra Pure 100G In Stock 23 USD
99.95%,325mesh
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Extra Pure 500G In Stock 82 USD
99.95%,325mesh
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Extra Pure 2.5KG In Stock 493 USD
99.95%,325mesh
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Extra Pure 10KG In Stock 1724 USD
99.95%,40mesh
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Extra Pure 1KG In Stock 323 USD
99.99%
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Extra Pure 25G In Stock 25 USD
99.99%
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Extra Pure 100G In Stock 98 USD
99.99%
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Extra Pure 500G In Stock 478 USD
99.99%,5-25μm,powder,spherical
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Extra Pure 5G In Stock 8 USD
99.99%,5-25μm,powder,spherical
Documents:COASDS
Extra Pure 25G In Stock 17 USD
99.99%,5-25μm,powder,spherical
Documents:COASDS
Extra Pure 100G In Stock 49 USD
99.99%,5-25μm,powder,spherical
Documents:COASDS
Extra Pure 500G In Stock 299 USD
powder,99.95%,200mesh
Documents:COASDS
Extra Pure 25G In Stock 11 USD
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ISO 9001
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Physical and chemical properties of 7440-33-7

Boiling Point

10,701 °F

Density

19.3

Exact Mass

183.95100

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)

Flash Point

-23ºC

Melting Point

6170 °F

Merck

13,9884

Molecular Formula

W

Molecular Weight

183.84000

resistivity

4.9 μΩ-cm, 20°C

Stability

Stable. Dust is flammable, though not likely to present a hazard if normal good practice is used.

Storage condition

no restrictions.

Vapour Pressure

0 mmHg (approx)

Water Solubility

insoluble

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Pictograms

Signal Word

Danger

Hazard Statements

H228 Flammable solid
H252 Self-heating in large quantities; may catch fire

Safety Data Sheet

Q&A for CAS 7440-33-7

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 7440-33-7

Tungsten's unique properties lend themselves to various applications:

  • Cutting Tools: Tungsten carbide is widely used in manufacturing cutting tools due to its hardness.
  • Electronics: Tungsten filaments are used in light bulbs and electron emitters due to their high melting point.
  • Aerospace: Used in components that require high-temperature resistance, such as rocket nozzles and combustion chambers .
  • Alloys: Tungsten is alloyed with other metals to enhance strength and resistance to wear .

Retrosynthesis analysis of 7440-33-7


Operate under the ISO 9001 system