More examples. 1  The police have called off the search for the missing child until dawn tomorrow. 2  The missing letter eventually turned up inside a book. 3  A search party was sent out to look for the missing climbers. 4  All of the ship's crew are missing, believed dead. 5  This jigsaw puzzle has two pieces missing.
A highly concentrated source of boric oxide for glazes. Anhydrous borax is made by burning or fusing hydrated borax. It thus contains little or no water of crystallization (conversation ratio of .53 compared to hydrated decahydrate borax) and does not rehydrate under normal storage conditions. Anhydrous borax is water soluble, but considerably less so than raw borax (in aqueous solution it can provide slow release of boron).
Borax, which is also known as Boric Acid and is sold under the brand name 20 Mule Team, is often touted as safe and natural. While it is a naturally occurring mineral, that doesn't mean it is without dangers. Borax is often recommended as a safe pesticide, fungicide and cleaner, but it is officially classified as a poison. Government sites recommend that people who work with Borax use gloves and handle it with caution.