- Sodium hydroxide (Wikipedia)
Sodium hydroxide, also known as lye and caustic soda, is an inorganic compound with the formula NaOH. It is a white solid ionic compound consisting of sodium cations Na+ and hydroxide anions OH−.
- Nauru (Wikipedia)
Nauru (/nɑːˈuːruː/ nah-OO-roo or /ˈnaʊruː/ NOW-roo; Nauruan: Naoero), officially the Republic of Nauru (Nauruan: Repubrikin Naoero) and formerly known as Pleasant Island, is an island country and microstate in Micronesia, part of the Oceania region in the Central Pacific. Its nearest neighbour is Banaba of Kiribati about 300 km (190 mi) to the east.