A lot of rice sold (most?) is "enriched" so the vitamins and minerals are added back. But the fiber is gone and rinsing the rice washes away the nutrient powder.

You might mix it with non-junk food rice. Shortgrain-brown might have a similar-enough cooking time that they can be mixed together. I'm hazy on that, as I stopped eating rice years ago, replacing it with steel-cut oats.

Or, who knows... maybe you could donate the sack to a food bank?