Related Clues:

• In autumn it requires a preservative
• Constituent of gunpowder - steel trap blown up?
• Saltpetre used in unit retreat
• Nitre
• Sailor concerned with keeping animal in compound
• Chemical found in some older tins recalled
• Sodium nitrate
• In mutton it remains a safeguard against decay
• Yellow element
• A letter P's disposed to indicate chemical
• Complicated steel part used in explosive
• Component of gunpowder
• Fool about making constituent of gunpowder
• Unusual ecstasy to demonstrate in spectacle
• Name 'sex appeal' with reference to explosive ingredient