What is the difference between chemical CAS number and CAS registration number

In the chemical industry, the chemical numbering system is a complex and important part. To ensure the unique identification of chemicals, several numbering systems are widely used internationally, one of which is the US chemicals and operations (CAS) registry system. This article will provide an in-depth interpretation of the CAS number and CAS registration number of chemicals to help readers better understand and apply these two key numbering systems.

1. what is a CAS number

1. Definition and Role

The CAS number, known as the U.S. chemicals and operations registry number, is a globally unique chemical identification system developed by the International Committee on the Classification of Chemicals System (ICSOC). Each chemical has a unique CAS number, usually expressed as a four or six digit number, for example: 1234-5678-9.

2. Historical background and development

The naming rules of CAS originated in the 1950 s, initially used in the United States, and later extended to the world. It is not only used in the US market, but also widely adopted by other countries, becoming an important reference in the field of international chemistry and chemical engineering.

3. In chemical application

CAS numbers are widely used in the purchase, sale, storage and transportation of chemicals. It can ensure the unique identification of chemicals, reduce confusion and errors, and improve the efficiency and safety of the chemical industry.

2. what is a CAS login number

1. Definition and Role

CAS registration numbers, also known as Search by Formula CAS numbers or online query numbers, are another system for finding and obtaining information on chemicals. Different from CAS number, it is mainly used to quickly find detailed information of chemicals through network platform or database.

2. Working principle and characteristics

CAS registration numbers usually appear in a format similar to CAS numbers, but their main function is to help users search online for information about the chemical's molecular formula, structure, and use. By entering the CAS registration number, the user can quickly locate the detailed data of the desired chemical.

3. In chemical application

CAS registration number is mainly used for online management and information retrieval of chemicals. Chemical companies can quickly find detailed information about the chemicals they need through an online platform to optimize procurement and inventory management.

3. CAS Number and CAS Login Number Difference

1. The main function is different

The primary function of the CAS number is to serve as a unique identifier for the purchase and sale of chemicals. The CAS registration number is mainly used to query and obtain detailed information about chemicals online.

2. Format and use scenarios are different

The CAS number is a fixed four or six digit number that identifies each chemical. The CAS login number may appear in a form similar to the CAS number, but its main function is to help users search and obtain information online.

3. Practicality is different

The CAS number is more widely used in the chemical industry because it is directly linked to the purchase and sale of chemicals. While CAS registration numbers are equally important, they are more used for information queries to help users obtain chemical data more efficiently.

4. choose the right numbering system

1. According to the actual needs of the choice

If the purchase and sale of chemicals is required, the CAS number should be preferred. If you need to query and obtain detailed information online, you can choose CAS login number.

2. Understand the platform function

When using a network platform, it is important to understand the numbering system supported by the platform. Some platforms support CAS numbers, while others support CAS login numbers.

3. Two-pronged approach is more efficient

In practical work, CAS number and CAS login number can be used at the same time to give full play to their advantages and improve work efficiency.

5. tip: How to find and use these two numbering systems

1. Use the authoritative platform

When purchasing or acquiring chemicals, try to use authoritative chemical suppliers or databases, such as the Chemical Safety Database (Safex) or the International Chemical Library (ICPS).

2. Familiar with platform function

When using the online platform, familiarize yourself with the numbering system supported by the platform and choose the most appropriate numbering format.

isceases.com's recommendation

If you need to find and obtain detailed information on chemicals, you can access the International Chemical Library (ICPS) or the Chemical Safety Database (Safex), which support two numbering systems and provide detailed information and data.

Conclusion

Through the above analysis, we can clearly see the important role of CAS number and CAS registration number in the chemical industry. Choosing the right numbering system can greatly improve the efficiency and accuracy of chemicals management. It is hoped that the interpretation of this paper will help practitioners in the chemical industry to better understand and apply these two key numbering systems.