The container can be the regulated article
On this page11
The clause
The definition includes "any component, liquid, part, or accessory of a device described in subparagraph (A), without regard to whether the component, liquid, part, or accessory is sold separately from the device".
Read the last eleven words again
Without regard to whether it is sold separately from the device. Selling a part on its own does not take it outside the definition.
Which is the only spine in this library that can reach the bottle
Everywhere else a container is the thing around a regulated product. Here a component can be the regulated article itself.
The four cannabis properties now cover four relationships
In edibles the container size decides the label. In concentrates the container is the unit a limit is measured in. In tinctures the container is irrelevant. Here it can be the subject.
And the consequence is about shipping
Not about shape, size, material or printing. A cigarette is nonmailable, and the definition of cigarette includes an electronic nicotine delivery system.
So nothing you do to the container changes the outcome
There is no size that exits the definition and no material that does. The chain runs on what the thing is, not on how it is made.
The device definition is broader than its name
It covers a device that "through an aerosolized solution, delivers nicotine, flavor, or any other substance to the user inhaling from the device". Flavor, or any other substance.
Which this property quotes and does not interpret
Whether a particular product is within the definition is a determination, and a container catalog has no standing to make it.
There is a stated exception
For a product approved by the Food and Drug Administration as a cessation product or for another therapeutic purpose, and marketed and sold solely for that purpose. Narrow, and quoted in full in the definition section.
Then there is our own problem
Every container indexed to this group is glass, and an e-liquid bottle is squeezed. That has its own page and it is not a legal problem.