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Petroleum Coke is a carbonaceous solid derived from oil refinery coker units or other cracking processes. Other coke has traditionally been derived from coal.

Formaldehyde is a naturally occurring organic compound with the formula CH2O (H-CHO). It is the simplest of the aldehydes (R-CHO) and is also known by its systematic name methanal. The common name of this substance comes from its similarity and relation to formic acid.

Potassium permanganate as a medication is used for a number of skin conditions This includes fungal infections of the foot, impetigo, pemphigus, superficial wounds, dermatitis, and tropical ulcers.For tropical ulcers it is used together with procaine benzylpenicillin.Typically it is used in skin conditions that produce a lot of liquid It can be applied as a soaked dressing or a bat