The date that the SDS was prepared, and the date that the information was last updated, if applicable, must be noted on the SDS.

This lets you know exactly how current an SDS is. Some SDS forms may be updated once or twice a year, while others, such as those for steel, do not require frequent updating. A call to the manufacturer or supplier can determine if you have the most recent update of the SDS form that is available.

This information can be found in the header of the sample SDS form at the end of this unit.