Environmental Health and Safety

MSDS Glossary

IARC
International Agency for Research on Cancer.
Ignitable
Capable of being set on fire.
Impervious
A material that does not allow another substance to pass through or penetrate it.
Incompatible
Materials that could cause dangerous reactions by direct contact with one another. Reactions between incompatible chemicals can cause an explosion, a fire, or the release of a toxic gas.
Ingestion
Taking in by the mouth.
Inhalation
Breathing in of a substance in the form of a gas, vapor, fume, mist, or dust.
Inhibitor
A chemical added to another substance to prevent an unwanted chemical change.
Insol
See Insoluble.
Insoluble
Not capable of being dissolved in a liquid.
Irritant
A chemical, which is not corrosive, that causes a reversible inflammatory effect on living tissue by chemical action at the site of contact.

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