Mixture

{
  "id": "MLC-T-ENV-017568",
  "term": "Mixture",
  "field": "Environment",
  "definition": "1. Any combination of two or more chemical substances if the combination does not occur in nature and is not, in whole or in part, the result of a chemical reaction; except that “mixture” does include:(1) Any combination which occurs, in whole or in part, as a result of a chemical reaction if the combination could have been manufactured for commercial purposes without a chemical reaction at the time the chemical substances comprising the combination were combined and if, after the effective date or premanufacture notification requirements, none of the chemical substances comprising the combination is a new chemical substance, and(2) Hydrates of a chemical substance or hydrated ions formed by association of a chemical substance with water.\n\n2. Any combination of two or more chemical substances if the combination does not occur in nature and is not, in whole or in part, the result of a chemical reaction; except “mixture” does include (1) any combination which occurs, in whole or in part, as a result of a chemical reaction if the combination could have been manufactured for commercial purposes without a chemical reaction at the time the chemical substances comprising the combination were combined, and if all of the chemical substances comprising the combination are not new chemical substances, and (2) hydrates of a chemical substance or hydrated ions formed by association of a chemical substance with water, so long as the nonhydrated form is itself not a new chemical substance.\n\n3. Any combination of two or more chemical substances if the combination does not occur in nature and is not, in whole or in part, the result of a chemical reaction; except that mixture does include (1) any combination which occurs, in whole or in part, as a result of a chemical reaction if the combination could have been manufactured for commercial purposes without a chemical reaction at the time the chemical substances comprising the combination were combined, and if all of the chemical substances comprising the combination are included in the EPA, TSCA Chemical Substance Inventory after the effective date of the premanufacture notification requirement under 40 CFR part 720, and (2) hydrates of a chemical substance or hydrated ions formed by association of a chemical substance with water. The term mixture includes alloys, inorganic glasses, ceramics, frits, and cements, including Portland cement.\n\n4. Same meaning as in § 720.3 of this chapter.\n\n5. Any mixture or blend of two or more compounds.\n\n6. Any combination of two or more elements and/or compounds in solid, liquid, or gaseous form except where such substances have undergone a chemical reaction so as to become inseparable by physical means.\n\n7. For the purposes of 40 CFR part 355, a heterogeneous association of substances where the various individual substances retain their identities and can usually be separated by mechanical means. This definition includes, for the purposes of 40 CFR part 355, solutions but does not include alloys or amalgams.\n\n8. Combination of two or more chemical substances if the combination does not occur in nature and is not, in whole or in part, the result of a chemical reaction; except that “mixture” does include (1) any combination which occurs, in whole or in part, as a result of a chemical reaction if the combination could have been manufactured for commercial purposes without a chemical reaction at the time the chemical substances comprising the combination were combined, and if all of the chemical substances comprising the combination are not new chemical substances, and (2) hydrates of a chemical substance or hydrated ions formed by association of a chemical substance with water, so long as the nonhydrated form is itself not a new chemical substance.\n\n9. Meaning given it in section 3(8) of the Act, 15 U.S.C. 2602(8).\n\n10. Any combination of two or more chemicals, if the combination is not, in whole or in part, the result of a chemical reaction. However, if the combination was produced by a chemical reaction but could have been produced without a chemical reaction, it is also treated as a mixture. A mixture also includes any combination which consists of a chemical and associated impurities.",
  "subject": "Chemicals, toxics and pesticides",
  "references": [
    "40 CFR 710.3 (CFR 2013)",
    "40 CFR 720.3 (CFR 2013)",
    "40 CFR 712.3 (CFR 2013)",
    "40 CFR 723.250 (CFR 2013)",
    "40 CFR 82.172 (CFR 2013)",
    "40 CFR 116.3 (CFR 2013)",
    "40 CFR 355.61 (CFR 2013)",
    "40 CFR 710.3 (CFR 2018)",
    "40 CFR 2.306 (CFR 2018)",
    "40 CFR § 372.3"
  ],
  "url": "https://mlchart.com/terminology/environment/mixture/"
}