The commonly used clearing agents are Toluene, Paraffin, Chloroform,, methyl salicylate and Citrus fruit oils, methyl benzoate and Xylene.
The most commonly used clearing agent is Xylene which is miscible with both parrafin wax and alcohol.
Xylene is an aromatic hydrocarbon widely used in industry and medical technology as a solvent.
Xylene is a colorless, sweet-smelling liquid or gas occurring naturally in petroleum, coal and wood tar, and is so named because it is found in crude wood spirit.
The Xylene is primarily used as a solvent (a liquid that can dissolve other substances) in the printing, rubber, and leather industries.
Along with other solvents, xylene is also widely used as a cleaning agent, a thinner for paint, and in varnishes.
Breathing xylene vapors in small amounts can cause headache, dizziness, drowsiness, and nausea. With more serious exposure, xylene can cause sleepiness, stumbling, irregular heartbeat, fainting, or even death.
Xylene vapors are mildly irritating to the skin, eyes, and lungs.
The xylene molecule is a type of chemical which has the formula C6H4(CH3)2.
Acetone has is a smaller molecule with the molecular weight of 58.08 g/mol.
Xylene is a larger molecule with the molecular weight of 106.168 g/mol.
The acetone molecule is a type of ketone.
The best way to apply xylene is by flooding it onto the surface with an industrial metal pump-up sprayer.
If enough is applied, the xylene should melt the sealer through to the surface of the concrete before it evaporates.
In conclusion, applying xylene is a great, inexpensive way to rejuvenate dull or whitened sealer.