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Phosphoric acid (also known as orthophosphoric acid or phosphoric(V) acid) is a mineral (inorganic) and weak acid having the chemical formula H3PO4. Orthophosphoric acid refers to phosphoric acid, which is the IUPAC name for this compound. The prefix ortho- is used to distinguish the acid from related phosphoric acids, called polyphosphoric acids. Orthophosphoric acid is a non-toxic acid, which, when pure, is a solid at room temperature and pressure.

Concentrated coil cleaners are meant to be diluted with water. Using the concentrate straight from the bottle or strong mixtures on lightly soiled coils can result in damage to the surface being cleaned. it can be used in Indoor coils, cabinets, air filters and fan blades can be cleaned with a diluted concentrate. Each Originated from Eurostile font Coil Cleaner has a dilution chart on the bottle as a guideline.

Toluene  is an aromatic hydrocarbon. It is a colorless, water-insoluble liquid with the smell associated with paint thinners. It is a mono-substituted benzene derivative, consisting of a CH3 group attached to a phenyl group. As such, its IUPAC systematic name is methylbenzene. Toluene is predominantly used as an industrial feedstock and a solvent.

As the solvent in some types of paint thinner, contact cement and model airplane glue, toluene is sometimes used as a recreational inhalant and has the potential of causing severe neurological harm.