4-Oxopentanal, also known as levulinaldehyde, is an aliphatic aldehyde–ketone compound used as an organic synthesis intermediate in fine chemical and process chemistry applications. Containing both aldehyde and ketone functional groups within the same carbon chain (CAS 626-96-0), it exhibits controlled carbonyl reactivity suitable for condensation, cyclization, and derivatization reactions. Industrial supply typically includes customized specifications and complete documentation such as MSDS, TDS, COA, supporting consistent bulk availability for regulated industrial use.
4-Oxopentanal CAS 626-96-0
- CAS: 626-96-0
- Synonyms: 4-Oxopentanal, Levulinaldehyde, 4-Ketopentanal, Oxopentanal
- Einecs: 210-957-8
- Molecular Formula: C₅H₈O₂
- Grade: Industrial grade 99%
- Package: 200kg iron drum or 50kg plastic drum packaging
Product Description
Physicochemical properties
| Property | Description |
|---|---|
| CAS Number | 626-96-0 |
| Molecular Formula | C₅H₈O₂ |
| Molecular Weight | 100.12 g/mol |
| Appearance | Oil |
| Color | Colourless to Pale Yellow |
| Boiling Point | 127.55°C (rough estimate) |
| Density | 1.0134 g/cm³ |
| Refractive Index | 1.4257 |
| Solubility | Slightly soluble in Chloroform, Ethyl Acetate |
| Stability | Hygroscopic (absorbs moisture from the air) |
Application Areas
As an indoor air chemical substance, it may participate in carbonylation reactions or act as an oxidation product.
Potential for research on organic synthesis intermediates or environmental pollutants
Storage conditions
Sealed and away from light: Store in a cool, dry place and avoid long-term contact with air.
Isolation oxidant: separate from strong oxidants to prevent reaction
Safety precautions
Personal protection: Wear gloves and goggles during operation to avoid skin or eye contact.
Leakage treatment: Collect after adsorption with sand and do not directly discharge into the environment.
Emergency measures:
Skin contact: Rinse immediately with clean water, seek medical attention if discomfort occurs.
Inhalation: Transfer to fresh air and administer oxygen if necessary
FAQ - Technical & Supply Chain
-
Q:
Do 4-Oxopentanal and Levulinaldehyde refer to the same substance?
A: Yes. These names describe the same molecular structure and correspond to a single CAS registration, indicating identical substance identity. -
Q:
Is 4-Oxopentanal mainly used as an intermediate rather than a finished chemical product?
A: It is typically supplied as an intermediate for organic and fine chemical synthesis, where bifunctional carbonyl compounds are required.
Documents and Product Support
For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.
- COA for batch-based quality reference
- TDS for key physical and chemical information
- SDS / MSDS for handling, storage, and safety reference
- Packing information for sample, trial, and bulk orders
- Technical communication based on application and specification requirements
Information to Confirm Before Quotation
Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.
- Product name and CAS number
- Application or intended end use
- Required purity, grade, or specification
- Sample quantity, trial order, or bulk demand
- Preferred packing form or net weight
- Destination country or port
- Required documents or compliance expectations
Packaging, Storage, and Handling Notes
Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.
Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.
Sample, Bulk Order and Repeat Supply Support
Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.
For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.




