B2B Internet for Chemical products

CAS number and CAS registration number are two commonly used concepts in chemical labeling and identification. Although both are codes used to uniquely identify chemical substances, they have some differences in their specific meanings and applications

Firstly, let's take a look at the CAS number, also known as the Chemical Abstracts Service Registry Number, which is a labeling system established by the Chemical Abstracts Service of the United States for identifying compounds and polymers. CAS numbers are usually composed of consecutive numbers without specific rules and patterns. The most common scenario is that a CAS number corresponds to a chemical substance, making it a unique identifier. On a global scale, CAS numbers are widely used for the labeling, retrieval, and identification of chemicals. The CAS number of chemicals can be found in relevant databases, such as the CAS database of the American Chemical Abstracts Society and some international chemical databases. Through the CAS number, we can accurately and quickly find relevant information about a certain chemical substance, such as its name, structure, physical and chemical properties, etc

Next, let's talk about the CAS registration number, which is a new type of chemical identification code introduced by the European Union in the REACH Registration, Evaluation, Authorization, and Restriction of Chemicals regulations. The CAS registration number consists of two parts. The first part is the EC number European Community Number, which consists of "EC" and eight digits and is used to identify chemicals registered in the European Union. The second part is a 6-digit number used to identify the registration order of chemicals under REACH regulations. The CAS registration number is used in REACH regulations to uniquely identify chemicals and requires chemicals sold in the European market to have a CAS registration number. Compared with CAS numbers, the coding rules for CAS login numbers are more strict and orderly, with stronger legal binding force. In the European field, CAS registration numbers have become an important tool for chemical registration and management, playing an important role in the production, sales, and use of chemicals

In summary, the CAS number and CAS registration number are both identification codes for chemicals, and they have important application value in different fields. Whether it is chemical retrieval and identification on a global scale, or chemical registration and management in Europe, CAS numbers and CAS registration numbers provide strong support for the safe use and management of chemicals. It is worth mentioning that with the development of globalization and informatization, the application scope of CAS numbers and CAS registration numbers will gradually expand, and the standardization and normalization of chemical labeling and identification will also be more perfect, laying a solid foundation for the sustainable development of the chemical industry.