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structure of 674-82-8

Acetyl Ketene(CAS 674-82-8)

CAS No.: 674-82-8 Brand: MolBest
M. Ft.: C4H4O2 Cat. No: G5706830
M. Wt.: 84.07 MDL: MFCD00005173
Storage: -20°C Use: For laboratory research use only
UN No.: UN 2929 6.1 /PG II
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97%
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RG 5G In Stock 5 USD
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RG 25G In Stock 11 USD
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RG 100G In Stock 27 USD
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RG 500G In Stock 115 USD
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RG 2.5KG In Stock 362 USD
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Physical and chemical properties of 674-82-8

Boiling Point

127 °C

Decomposition

Begins to react and decompose exothermically at 208 °F (98 °C) or lower if contaminated.

Density

Relative density of the vapour/air-mixture at 20 °C (air = 1): 1.02

Exact Mass

84.021126

Flash Point

33 °C c.c.

Index of Refraction

Index of refraction: 1.439 at 20 °C/D

LogP

log Kow = -0.39 (est)

Melting Point

-7 °C

Molecular Formula

C4H4O2

Molecular Weight

84.073

Odor

Pungent odor

PSA

26.30000

Stability

Self-initiated exotermic dimerization is explosive.

Storage condition

2-8°C

Vapour density

Relative vapor density (air = 1): 2.9

Vapour Pressure

Vapor pressure, kPa at 20 °C: 1

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Spectrums of 674-82-8

Attention:
1.The NMR spectrum displayed on the page is a pre-sale reference spectrum and may differ from that of the actual received batch.
2.The accompanying documentation will include the NMR spectrum and purity analysis data for the shipped batch.
Physical sample testing spectrum (NMR) of 674-82-8

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Pictograms

Signal Word

Danger

Hazard Statements

H226 Flammable liquid and vapor
H302 Harmful if swallowed
H315 Causes skin irritation
H318 Causes serious eye damage
H330 Fatal if inhaled
H331 Toxic if inhaled
H332 Harmful if inhaled
H335 May cause respiratory irritation

Safety Data Sheet

Q&A for CAS 674-82-8

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.

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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.

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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.

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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 674-82-8

Diketene has diverse applications across various industries:

  • Pharmaceuticals: It serves as a key intermediate in the synthesis of various drugs and biologically active compounds.
  • Agricultural Chemicals: Diketene derivatives are used in the formulation of herbicides and pesticides.
  • Paints and Coatings: Its reactivity contributes to the production of specific types of resins used in paints and coatings.

Retrosynthesis analysis of 674-82-8


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