What does a “D” in Column 1 of the Hazardous Materials Table indicate?
Correct answer: B – The proper shipping name is appropriate domestically but may be inappropriate internationally
Federal hazardous materials regulations use “D” to identify proper shipping names that are appropriate for domestic transportation but may be inappropriate under international regulations. An alternate proper shipping name may be selected when domestic or international transportation is involved. The “G” and “W” symbols have different meanings.
Source: 49 CFR § 172.101(b)(3) – Purpose and use of the hazardous materials table

