For every substance containing hazardous materials, the employer shall provide necessary safety and health instructions (hereafter referred to as Material Safety Data Sheet) to employees. Refer to the Attachment 5 for its format.
The Material Safety Data Sheets as prescribed in the preceding Paragraph shall be kept in an easily accessible location of the workplace.

The manufacturer or supplier shall prepare and make available a Material Safety Data Sheet for each substance prescribed in the preceding Article. If the substance is a mixture consisting of two hazardous materials or more, the Material Safety Data Sheet shall be prepared based on its hazardous properties after mixing.
The chemical names of main hazardous ingredients with concentrations of 1% (by weight) or greater in the mixture prescribed in the preceding Paragraph shall be listed. The hazardous properties of the mixture are assessed as follows:
1. If the mixture has been tested as a whole to determine its hazards, the results of such testing shall be used.
2. If the mixture has not been tested as a whole, its health hazards shall be assumed to present the same health hazards as do the components unless that hazards supported by scientific evidence concerning with such hazards, and their physical hazards including fire, explosion and reactivity, shall be evaluated by using scientifically valid data.

When several mixtures as prescribed in the preceding Article, are categorized as the same substances with the same main ingredients, usage and hazards but the specific composition varies from mixture to mixture, one Material Safety Data Sheet may be applied to all of these similar mixtures, but a different name for each substance shall be assigned.

The employer shall constantly review the accuracy of the contents of Material Safety Data Sheet and update them.
Material Safety Data Sheet shall be updated no less every three years.