For procurement managers and R&D scientists, having precise information about chemical intermediates is crucial for successful acquisition and utilization. DL-Phenylsuccinic Acid (CAS 635-51-8) is a widely used organic synthesis intermediate, and understanding its specifications and handling procedures is key to ensuring quality and safety. This guide provides essential details for those looking to purchase DL-Phenylsuccinic acid.

Product Identification: DL-Phenylsuccinic Acid (CAS 635-51-8)

DL-Phenylsuccinic Acid is identified by its Chemical Abstracts Service (CAS) Registry Number: 635-51-8. It is also known by synonyms such as 2-Phenylsuccinic acid, alpha-Phenylsuccinic acid, and Butanedioic acid, 2-phenyl-. Its molecular formula is C10H10O4, and its molecular weight is approximately 194.18 g/mol.

Key Specifications for Procurement

When sourcing DL-Phenylsuccinic Acid, pay close attention to the following specifications:

• Appearance: The typical appearance is a White or light yellow crystalline powder. Deviations in color or form might indicate impurities or degradation.
• Purity: For most organic synthesis applications, a purity of 98% or higher is generally required. Suppliers will usually specify the purity percentage on their product data sheets or Certificate of Analysis (COA). When searching for products, common terms include 'DL-Phenylsuccinic acid 98%'.
• Melting Point: The melting point range is a crucial indicator of purity. For DL-Phenylsuccinic Acid, this is typically 166-168°C (lit.). A wider or lower melting point range can suggest the presence of impurities.
• Solubility: Information on solubility in common solvents (e.g., water, ethanol, ether) is often provided, which is critical for formulation and reaction planning.
• CAS Number: Always verify the CAS number (635-51-8) to ensure you are procuring the correct chemical.

Handling and Safety Precautions

While DL-Phenylsuccinic Acid is generally considered a moderately hazardous chemical, proper handling is essential. Always consult the Material Safety Data Sheet (MSDS) or Safety Data Sheet (SDS) provided by the manufacturer or supplier for comprehensive safety information.

• Storage: It should be stored in a cool, dry place, away from direct sunlight and incompatible materials. The original packaging should be kept sealed. Some sources recommend storing below +30°C.
• Incompatibility: DL-Phenylsuccinic Acid is incompatible with strong oxidizing agents, which can lead to hazardous reactions.
• Personal Protective Equipment (PPE): When handling, wear appropriate PPE, including safety goggles, gloves (e.g., nitrile or neoprene), and protective clothing. If dust generation is possible, a respirator may be necessary.
• Health Hazards: Risk statements often include Xi (Irritant), with hazard statements such as H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Safety statements emphasize avoiding breathing dust and ensuring adequate ventilation.
• First Aid: In case of contact, flush affected areas with plenty of water. Seek medical attention if irritation persists.

Procurement from Reliable Sources

When looking to purchase DL-Phenylsuccinic acid, seek out reputable manufacturers and suppliers, particularly those in China, known for competitive pricing and established quality control. Always verify the specifications against your project requirements. Understanding the detailed specifications and safety data will empower you to make informed purchasing decisions and ensure safe handling and effective use of this important chemical intermediate.