Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part XIII - Worker and Community Right-to-Know Act
Chapter 307 - MATERIAL SAFETY DATA SHEET (MSDS)
Section 307.10 - Responsibility for providing MSDSs to the Department

(1) One copy of an MSDS for a hazardous substance or hazardous mixture which they produce within or deliver to a point in this Commonwealth, at the same time as their initial shipment to an employer within this Commonwealth.

(2) One copy of an MSDS for another chemical for which they produce or possess an MSDS at the time of the initial shipment of the chemical to an employer in this Commonwealth.

(3) One copy of an updated MSDS at the same time the updated MSDS is provided to an employer within this Commonwealth.

(4) For the situations described in paragraphs (1)-(3) the manufacturer, importer or supplier need only mail one copy of the MSDS to the Department. Once an MSDS is on file with the Department, copies need not be provided with each shipment of the chemical to different customers, except as provided in paragraph (3).