If he had autism he wouldn't be very social, but very shy. I don't think flapping his arms is a sign of autism, but if you're concerned about it, ask a neurologist about it, or his doctor, either way. :) â¥ Cute T â¥ Â· 9 years ago.
If it weren't for food preservatives, we couldn't enjoy many of the great foods the world has to offer. Common antimicrobial preservatives include sodium nitrate, calcium propionate, disodium EDTA, potassium sorbate, sodium benzoate, and sulfites.
What is used as a food preservative 1. sodium Benzoate 2. sodium Thiosulphate 3. sodium Hydroxide 4. sodium Bicarbonate? Number 1. Sodium Benzoate is the food preservative. no. 2 and 3 are not used in food at all, no. 4 is not a preservative but is used in baking powder.