The internet has opened up access to large amounts of chemistry related data that can be harvested and assembled into rich resources of value to chemists. The Royal Society of Chemistry’s ChemSpider database has assembled an electronic collection of over 28 million chemicals from over 400 data sources and some of the assembled data is certainly of value to those searching for chemical health and safety information. Since ChemSpider is a text and structure searchable database chemists are able to find relevant information using both of their general search approaches. This presentation will provide an overview of the types of chemical health and safety data and information made available via ChemSpider and discuss how the data are sourced, aggregated and validated. We will examine how the data can be made available via mobile devices and examine the issue of data quality and its potential impacts on such a database.