MSDS Glossary
- m
- Meter is a unit of length in the metric system. One meter is about 39 inches.
- m3
- Cubic meter is a metric measure of volume, approximately 35.3 cubic feet or 1.3 cubic yards.
- Malaise
- A feeling of general discomfort, distress, or uneasiness, an out-of-sorts feeling.
- Mechanical Exhaust
- A powered device, such as a motor-driven fan or air steam venturi tube, for exhausting contaminants from a workplace, vessel, or enclosure.
- Mechanical Filter Respirator
- A respirator used to protect against airborne particulate matter like dusts, mists, metal fume, and smoke. Mechanical filter respirators do not provide protection against gases, vapors, or oxygen deficient atmospheres.
- Melting Point
- The temperature at which a solid substance changes to a liquid state.
- Metabolism
- Physical and chemical processes taking place among the ions, atoms, and molecules of the body.
- Meter
- A unit of length, equivalent to 39.37 inches.
- mg
- Milligram is a metric unit of weight that is one-thousandth of a gram, i.e. 1000 milligrams equals one gram.
- mg/kg
- Milligrams of substance per kilogram of body weight is an expression of toxicological dose.
- mg/m3
- Milligrams per cubic meter is a unit for expressing concentrations of dusts, gases, or mists in air.
- Micron (Micrometer)
- A unit of length equal to one-millionth of a meter; approximately 0.000039 of an inch.
- Mist
- Suspended liquid droplets generated by condensation from the gaseous to the liquid state, or by breaking up a liquid into a dispersed state, such as splashing, foaming, or atomizing. Mist is formed when a finely divided liquid is suspended in air.
- Mixture
- Any combination of two or more chemicals.
- ml
- Milliliter is a metric unit of capacity, equal in volume to 1 cubic centimeter (cc), or approximately one-sixteenth of a cubic inch. One-thousandth of a liter.
- mmHg
- Millimeters (mm) of mercury (Hg) is a unit of measurement for low pressures or partial vacuums.
- Molecular Weight
- Weight (mass) of a molecule based on the sum of the atomic weights of the atoms that make up the molecule.
- MSDS
- Material Safety Data Sheet, a document containing information and instructions on the chemical and physical characteristics of a substance, its hazards and risks, safe handling requirements and the actions to be taken in the event of fire, spill or exposure.
- Mutagen
- A substance or agent capable of altering the genetic material in a living cell. See also Reproductive Toxin.
- MW
- See Molecular Weight.
Return to top
