What is a CAS number? CAS numbers are assigned by the Chemical Abstracts Service and are used to identify a particular chemical substance. They are also useful for searching other databases containing information on chemicals, preventing hazard identification errors. In this article, we will discuss CAS numbers and their importance in the chemical industry. We’ll also see how they can be used to save time and prevent hazards in the workplace.
CAS numbers are assigned by Chemical Abstracts Service
CAS numbers are assigned to chemicals by the Chemical Abstracts Service (CAS), a division of the American Chemical Society. Each CAS entry is identified by a unique CAS Registry Number, which can range up to 10 digits. CAS numbers have no significance for the chemistry, structure, or nature of the chemical, but they are a useful way to identify compounds and chemicals. For example, ethanol has the CAS number 86-33-8, but can also be known as ethyl alcohol, ethyl hydrate, grain alcohol, and hydroxyethane.
CAS numbers are not unique to a single chemical; they can have more than one number. For example, sodium hypochlorite is available in sodium salt and pentahydrate forms. The sodium hypochlorite CAS number is 8654-93-90 and 87-03-72. CAS numbers may also be overlapping for a particular chemical, a condition known as chemical multiple assignment. If multiple CAS numbers are assigned to a chemical, it is a case of “mis-assignment” (where two forms of a substance are regarded as the same, but which are not) and the CAS registry number is cross-referenced. A mis-assigned CAS number is deleted, but is kept on file for referencing purposes.
They are used to identify a chemical substance
Since 1907, a CAS number has been assigned to each chemical substance. This graphical representation of the chemical structure is a convenient and reliable way to identify chemical substances. There are more than 168 million CAS numbers, including those for nucleic acids and protein sequences. The CAS Registry Number is an internationally recognized identifier for chemical substances. CAS numbers are also used for product identification, including labeling and safety data sheets.
A CAS number is a unique numerical identifier assigned to a chemical substance by a scientific organization called the Chemical Abstracts Service. It is a permanent record of all chemical substances that are disclosed to the public. Each chemical is assigned a unique identifier, which is used for international trade. CAS numbers are long enough to be easily readable and are internationally recognized. It is important to note that a chemical’s CAS number is different from its IUPAC number.
They can be used to search other databases for chemical information
For example, if you want to lookup a molecule in the database ChemDB, you can enter the CAS number of that molecule and click on the search button. The database provides a variety of cheminformatics tools for free, such as Babel file format conversion and molecular property calculation. ChemBank is a database of 36,000 original biological assays for small molecules collected by Harvard’s Institute of Chemistry and Cell Biology. Similarly, the National Institute of Allergy and Infectious Diseases database contains hundreds of thousands of screening datapoints.
CAS numbers are a great convenience for researchers because they can be used to search other databases for chemical data. Many databases allow you to search by CAS number, making it a convenient way to locate information on any chemical. Chemical Abstracts has more than 143 million substances and 67 million reference entries. This database contains articles in all fields of chemistry, so you’ll find an item with the CAS number in the list.
They prevent hazard identification errors
Chemical substances and compounds often come with many different names. Non-chemists typically misspell them, making them difficult to identify. CAS numbers help prevent these mistakes. In addition to helping prevent human error in chemical identification, CAS numbers help make regulatory reporting easier. By following these guidelines, you can help prevent hazard identification errors and improve chemical identification. Listed below are three ways to use CAS numbers to help prevent hazard identification errors.
CAS numbers are an important part of Safety Data Sheets. They identify over 180 million chemical substances, so even the smallest mistake can result in costly and time-consuming mistakes. CAS stands for Chemical Abstract Services and is a division of the American Chemical Society. CAS works hard to build the world’s most comprehensive database of chemistry content. By using CAS numbers, you can ensure the safety of your workplace and prevent costly mistakes.
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