Chemical Substance Inventory Information System

Users are able to search the substances using search fields including CAS No., serial number, or exact chemical names in Chinese or English. Instructions of how to search in the system by each search field are listed below:

CAS No.

The general format of CAS No. is as XXXX-XX-X. We recommend that you use CAS No. as top priority keyword to avoid searching difficulty which might be caused by using different chemical name (synonyms) in Chinese or English.

Chemical name in Chinese or English

The second prior keyword is by chemical name in Chinese or English. If the system fails to generate results using one name, it is recommended to use another name (e.g. synonym) to try again. However, the draft inventory on the website might not cover all chemical names for one substance. Therefore, using CAS No. to search is suggested to be the priority option. Please note if you only have common name, trade name, or product name of a chemical substance, it is possible that you might NOT find this chemical even if the substance itself is listed in the draft inventory.

There are several useful Internet sites to find CAS No. or chemical names. It is suggested to use these public websites or search engines to ensure you get the best searching results.

Inventory Search

This website provides both Quick Search and Advanced Search.

Quick Search

Enter one CAS No. or serial number as keyword at a time to search for the chemical substance. The result will show if is listed in the draft inventory.

Advanced Search

Users can enter up to five chemicals at a time, using CAS No. or serial number, or correct Chinese chemical names and English chemical names as keyword(s).

The following three keywords can be used :

CAS No. or serial number

English substance name

Chinese substance name

However, any one of the previously mentioned three keywords can be used for searching. If more than 2 types of keywords are provided, the system will only show the search results according to the priority order of sequence.

The priority order of sequence for identification when conducting search is: CAS No. or serial number > English chemical name > Chinese chemical name.