Materials Family

{
  "id": "MLC-T-ENV-016664",
  "term": "Materials Family",
  "field": "Environment",
  "definition": "1. Grouping of materials with the same basic composition or the same basic end use or functionality produced using the same basic feedstocks with essentially identical HAP emission profiles (primary constituent and relative magnitude on a pound per product basis) and manufacturing equipment configuration. Examples of families of materials include multiple grades of the same product or different variations of a product (e.g., blue, black, and red resins).\n\n2. Grouping of materials that have the same basic composition or the same basic end use or functionality; are produced using the same basic feedstocks, the same manufacturing equipment configuration and in the same sequence of steps; and whose production results in emissions of the same Table 1 HAP at approximately the same rate per pound of product produced. Examples of families of materials include multiple grades of same product or different variations of a product (e.g., blue, black and red resins).",
  "references": [
    "40 CFR 63.2550 (CFR 2013)",
    "40 CFR 63.11502 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/materials-family/"
}