You are buying 4 Ounces of Sodium Benzoate. The item ships in 1 polypropylene bottle. Sodium Benzoate (NaC7H5O2) has hundreds of uses. 2-4 day transit time throughout the country. We ship three times a day; so your item is guaranteed to go out the very same day you place your order. Our bottles are made of sturdy polypropylene. The square, “space-saver” shape ensures that the bottles fit snugly on a shelf. The wide mouth makes for easy dispensing and stackability. To ensure a spill-free journey, we shrink-wrap the screw tops and seal the bottles in plastic.