§ 1066.1005 — Symbols, Abbreviations, Acronyms, And Units Of Measure

The procedures in this part generally follow either the International System of Units (SI) or the United States customary units, as detailed in NIST Special Publication 811, which we incorporate by reference in § 1066.1010. See 40 CFR 1065.20 for specific provisions related to these conventions. This section summarizes the way we use symbols, units of measure, and other abbreviations.

(a) Symbols for quantities. This part uses the following symbols and units of measure for various quantities:

Table 1 of § 1066.1005—Symbols for Quantities

(b) Symbols for chemical species. This part uses the following symbols for chemical species and exhaust constituents:

Table 2 to Paragraph (b) of § 1066.1005—Symbols for Chemical Species and Exhaust Constituents

(c) Superscripts. This part uses the following superscripts for modifying quantity symbols:

Table 3 of § 1066.1005—Superscripts

(d) Subscripts. This part uses the following subscripts for modifying quantity symbols:

Table 4 of § 1066.1005—Subscripts

(d) Subscripts. This part uses the following subscripts to define a quantity:

(e) Other acronyms and abbreviations. This part uses the following additional abbreviations and acronyms:

Table 5 of § 1066.1005—Other Acronyms and Abbreviations

(f) Densities of chemical species. This part uses the following densities of chemical species:

Table 6 of § 1066.1005—Densities of Chemical Species

(g) Constants. (1) This part uses the following constants for the composition of dry air:

Table 7 to Paragraph (g)(1) of § 1066.1005—Constants for the Composition of Dry Air

(2) This part uses the following molar masses or effective molar masses of chemical species:

Table 8 to Paragraph (g)(2) of § 1066.1005—Molar Masses or Effective Molar Masses of Chemical Species

(3) This part uses the following molar gas constant for ideal gases:

Table 9 to Paragraph (g)(3) of § 1066.1005—Molar Gas Constant for Ideal Gases

(h) Prefixes. This part uses the following prefixes to define a quantity:

Table 10 to Paragraph (h) of § 1066.1005—Prefixes to Define a Quantity