Possible Clues:

• The thinner first-class accent
• Eat once (anag) - solvent
• Solvent of excellent colour
• One has the sound of a solvent
• One on either side of so little tea that is so pungent
• One single sound for solvent
• Chemical requirement in a fab colour
• The sound of one that's a solvent
• Spot remover
• Pip, put in school to get thinner