In the global chemical trade, standardized identification is crucial for accuracy, safety, and efficient sourcing. The Chemical Abstracts Service (CAS) Registry Number is a unique identifier assigned to every chemical substance. For B2B buyers and professionals in the chemical industry, understanding what a CAS number signifies, like CAS 78-76-2 for 2-Bromobutane, is fundamental to accurate procurement and application. This article explores the importance of CAS numbers and how they aid in sourcing 2-Bromobutane.

What is a CAS Number?

The CAS Registry Number is a sequence of numbers separated by hyphens, serving as a universally recognized identifier for a specific chemical compound. The system is maintained by the Chemical Abstracts Service, a division of the American Chemical Society. Unlike chemical names, which can have multiple synonyms or variations (e.g., sec-butyl bromide for 2-Bromobutane), the CAS number is unambiguous. This means that searching for 'CAS 78-76-2' will exclusively lead to information about 2-Bromobutane, eliminating confusion.

2-Bromobutane: Properties and Applications via its CAS Number

When you search for 'CAS 78-76-2', you unlock a wealth of information about 2-Bromobutane:

• Chemical Identity: It confirms the precise molecular structure of 2-Bromobutane (C4H9Br).
• Physical Properties: Information such as its appearance (colorless transparent liquid), boiling point (90.7±8.0 °C), melting point (-112 °C), and flash point (21.1±0.0 °C) becomes readily available.
• Applications: The primary uses as an intermediate for organic synthesis and as a solvent are clearly defined.
• Safety Information: Access to Safety Data Sheets (SDS) is crucial for handling, storage, and emergency procedures.
• Supplier Information: Searching by CAS number allows for efficient identification of manufacturers and suppliers offering the product, facilitating price inquiries and purchase requests.

Leveraging CAS Numbers for Effective Sourcing

For B2B buyers, using CAS numbers is an indispensable tool:

• Precise Product Identification: When you need to 'buy 2-Bromobutane', specifying 'CAS 78-76-2' ensures you receive the correct isomer and compound.
• Streamlined Research: Quickly gather technical data, quality specifications (like 99.0%min assay), and potential applications by searching with the CAS number.
• Supplier Verification: When comparing offers from different '2-Bromobutane suppliers', ensure they all list the correct CAS number, signifying they are quoting for the same product.
• Regulatory Compliance: CAS numbers are often used in regulatory documents, import/export declarations, and inventory management systems.

Working with a reputable '2-Bromobutane manufacturer' that clearly lists the CAS number on all documentation and product listings provides confidence and efficiency. The CAS number is more than just a label; it's the key to accurate chemical commerce, enabling informed decisions when you purchase 2-Bromobutane.