[learner]

Usually Di ethyl phthalate is used as solvent for agarbatti(incense sticks) fragrance.But it fades the colour of coloured Agarbatti(incense sticks).Are there any oxygenated solvents which can be used in incense sticks which do not affect the colour.I heard there are some oxygenated solvents which are by products of pharma companies which can be used.