Historical clue formulations

• ___ nitrate (diesel fuel additive) — 2019-01-04
• ___ nitrite (angina treatment) — 2012-04-18
• ___ nitrate — 2012-02-14
• ___ nitrite — 2011-10-08
• ___ acetate (banana oil) — 2009-12-11
• ___ nitrite — 2009-07-19
• ___ nitrate — 2008-02-10
• ___ nitrate — 2007-09-30
• ___ nitrate — 2006-04-25
• ___ nitrite — 2002-07-07
• ___ nitrate — 2001-05-27
• Form of nitrite — 2000-11-19
• ___ nitrate (stimulant) — 2000-02-19
• Kind of alcohol — 1998-02-01
• Univalent chemical group — 1995-02-05