Authorized Metal Aerosol Containers
If the gauge pressure (psig) at 54.4 °C (130 °F) is . . . | Authorized container |
140 or less | Non-DOT specification, DOT 2P, DOT 2Q, DOT 2Q1. |
Greater than 140 but not exceeding 160 | DOT 2P, DOT 2Q, DOT 2Q1. |
Greater than 160 but not exceeding 180 | DOT 2Q, DOT 2Q1. |
Not to exceed 210 | DOT 2Q1 (Non-flammable only). |
Authorized Plastic Aerosol Containers
If the gauge pressure (psig) at 55 °C (131 °F) is . . . | Authorized plastic container |
Less than 140 | Non-DOT specification, DOT 2S. |
140 or greater but not exceeding 160 | DOT 2S. |
Authorized Aerosol Containers for Foodstuffs and Soaps
If the gauge pressure (psig) at 54.4 °C (130 °F) is . . . | Authorized container |
Not exceeding 140 | Non-DOT specification, DOT 2P, DOT 2P1, DOT 2Q, DOT 2Q2. |
Greater than 140 but not exceeding 160 | DOT 2P, DOT 2P1, DOT 2Q, DOT 2Q2. |
Greater than 160 but not exceeding 180 | DOT 2Q, DOT 2Q2. |
S = Pd/2t
Where:
S = wall stress in psi;
P = prescribed pressure for the tank is at least the manufacturer's rated maximum working pressure or three (3) times the pre-charged pressure at 21.1 °C (70 °F), whichever is greater;
d = inside diameter in inches; and
t = minimum wall thickness, in inches.
49 C.F.R. §173.306
For FEDERAL REGISTER citations affecting § 173.306, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.