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structure of 643-79-8

Phthaldialdehyde(CAS 643-79-8)

CAS No.: 643-79-8 Brand: MolBest
M. Ft.: C8H6O2 Cat. No: G1603078
M. Wt.: 134.13 MDL: MFCD00003335
Storage: 2-8°C Use: For laboratory research use only
UN No.: UN 2923 8 /PG II
Purity Grade Package Stock Price Quantity
99%
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RG 5G In Stock 4 USD
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RG 25G In Stock 7 USD
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RG 500G In Stock 96 USD
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RG 10KG In Stock 1758 USD
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Physical and chemical properties of 643-79-8

Boiling Point

BP: 83 °C at 0.8 mm Hg

BRN

878317

Decomposition

When heated to decomposition it emits acrid smoke and irritating fumes.

Density

Density (at 20 °C): 1.13 g/cm³

Exact Mass

134.036774

Exposure Limits

ACGIH: SL .025 mg/100 cm2; Ceiling 0.1 ppb (Skin)

Flash Point

132 °C c.c.

Index of Refraction

1.623

LogP

0.99 (30 °C)

Melting Point

55.8 °C

Merck

14,7368

Molecular Formula

C8H6O2

Molecular Weight

134.132

pH

7 (53g/l, H2O, 20℃)

PSA

34.14000

Sensitivity

Air Sensitive

Solubility

37.7g/L at 20°C in Water

Stability

Stable. Air sensitive. Incompatible with strong oxidizing agents, strong bases.

Storage condition

2-8°C

Vapour density

Relative vapor density (air = 1): 4.6

Vapour Pressure

Vapor pressure, Pa at 25 °C: 0.6

Water Solubility

soluble

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Spectrums of 643-79-8

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 643-79-8

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Pictograms

Signal Word

Danger

Hazard Statements

H228 Flammable solid
H301 Toxic if swallowed
H314 Causes severe skin burns and eye damage
H315 Causes skin irritation
H317 May cause an allergic skin reaction
H318 Causes serious eye damage
H335 May cause respiratory irritation
H373 May causes damage to organs through prolonged or repeated exposure
H400 Very toxic to aquatic life
H410 Very toxic to aquatic life with long lasting effects

Safety Data Sheet

Q&A for CAS 643-79-8

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.

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.

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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.

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 643-79-8

o-Phthalaldehyde has diverse applications across various fields:

  • Disinfectant: Commonly used for high-level disinfection of medical instruments under brand names like Cidex o-phthalaldehyde.
  • Analytical Chemistry: Utilized for amino acid analysis due to its fluorescent properties when reacting with amines and thiols.
  • Polymer Chemistry: Can be polymerized to form poly(phthalaldehyde), which is employed in photoresist materials and hydrogels.

Retrosynthesis analysis of 643-79-8


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