Waste Management and Safety
Waste Management and Safety
5940022WasteandSafety.fm Page 61
4.7.2 Sections of an MSDS
Each MSDS has ten sections. The sections and the information found in them are
described below.
Header Information
The Hach catalog number, MSDS date, change number, company address and
telephone number, and emergency telephone numbers are listed at the top of
the MSDS.
4.7.2.1 Product Identification
This section contains:
• Hach product name
• Chemical Abstract Services (CAS) number
• Chemical name
• Chemical formula, if appropriate
• Chemical family to which the material belongs
4.7.2.2 Ingredients
This section lists each component in the product. It contains the following
information for each component:·
• PCT: Percent by weight of this component
• CAS NO.: Chemical Abstract Services (CAS) registry number for this
component
• SARA: Superfund Amendments and Reauthorization Act, better known as
the “Community Right to Know Law”, informs if the component is listed in
SARA 313. If the component is listed and you use more than the specified
amount, you must report this to the USEPA every year.
• TLV: Threshold Limit Value. The maximum airborne concentration for an
8-hour exposure that is recommended by the American Conference of
Governmental Industrial Hygienists (ACGIH).
• PEL: Permissible Exposure Limit. The maximum airborne concentration for
an 8-hour exposure that is regulated by the Occupational Safety and Health
Administration (OSHA).
• HAZARD: Physical and health hazards of the component are explained.
4.7.2.3 Physical Data
The physical properties of the product are given in this section. They include the
physical state, color, odor, solubility, boiling point, melting point, specific
gravity, pH, vapor density, evaporation rate, corrosivity, stability, and storage
precautions.
4.7.2.4 Fire, Explosion Hazard And Reactivity Data
This section contains the flash point and flammable limits of the material. It also
includes how to fight fires if the material catches on fire. Key terms in this
section include:
• Flash point: The temperature at which a liquid will give off enough
flammable vapor to ignite.
• Flammability and ignitability are usually defined by the flash point.
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