Such ink must be specially formulated to resist other chemicals it will come in contact with on the printing press.
It is widely used for printing high-quality images and text on various substrates such as paper, cardboard, and certain plastics.
[1] It is crucial that offset ink resist water-in-ink emulsification (i.e., repel rather than absorb water).
It also should withstand degradation by the fountain solution that covers the non-printing areas of the engraved plate.
Offset ink needs to be very rich in pigment so that its full color vibrancy is perceptible, even in minute quantity.