Reactant

{
  "id": "MLC-T-ENV-023186",
  "term": "Reactant",
  "field": "Environment",
  "definition": "1. Chemical substance that is used intentionally in the manufacture of a polymer to become chemically a part of the polymer composition.\n\n2. Chemical substance that is used intentionally in the manufacture of a polymer to become chemically a part of the polymer composition. (Reactants include monomers, chain transfer and crosslinking agents, monofunctional groups that act as modifiers, other end groups or pendant groups incorporated into the polymer. For example, sodium hydroxide is considered a reactant when the sodium ion becomes part of the polymer molecule as a counter ion.)\n\n3. A chemical substance that is present at the start of a chemical reaction.",
  "references": [
    "40 CFR 723.250 (CFR 2013)",
    "EPA Polymer Exemption Guidance Manual EPA 744-B-97-001 at www.epa.gov/sites/production/files/2015-03/documents/polyguid.pdf",
    "DOE Office of Energy Efficiency & Renewable Energy Fuel Cell Technologies Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/reactant/"
}