scatter, sprinkle, give them the slip
撒 centers on dispersing something outward by hand: scattering, sprinkling, or throwing things around. The sense of giving someone the slip is a figurative extension of scattering oneself away from a pursuer.
撒 combines 扌 (hand) with 散, which likely contributes both sound and the idea of scattering or dispersing. The hand radical emphasizes the action of scattering by hand.
A hand 扌 scattering the right-side 散 (which itself suggests scattering) reinforces the image of throwing or sprinkling things outward.
For サン, imagine scattering sand by hand: sand -> サン, and your hand scatters it everywhere.
to scatter; to sprinkle; to strew
to scatter; to disseminate (e.g. a rumor); to spread (e.g. germs); to broadcast
to scatter; to spread
broadcasting (seeds); broadcast seeding
scattered animal feed; ground bait
distribution of flyers
salt-throwing ceremony before the sumo bout
sprinkling water (on the ground); sprinkled water
caltrop (spiked device scattered to maim infantry and horses); calthrop; caltrap
Sakizaya (people)
dusting powder
watering; sprinkling