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Petroleum jelly, petrolatum, white petrolatum, soft paraffin or multi-hydrocarbon, CAS number 8009-03-8, is a semi-solid mixture of hydrocarbons (with carbon numbers mainly higher than 25), originally promoted as a topical ointment for its healing properties. After petroleum jelly became a medicine chest staple, consumers began to use it for myriad ailments and cosmetic purposes, including toenail fungus, genital rashes (non-STD), nosebleeds, diaper rash, and chest colds. Its folkloric medicinal value as a "cure-all" has since been limited by better scientific understanding of appropriate and inappropriate uses. It is recognized by the U.S. Food and Drug Administration (FDA) as an approved over-the-counter (OTC) skin protectant, and remains widely used in cosmetic skin care. == History == The raw material for petroleum jelly was discovered in 1859 in Titusville, Pennsylvania, United States, on some of the country's first oil rigs. Workers disliked the paraffin-like material forming on rigs because it caused them to malfunction, but they used it on cuts and burns because they believed it hastened healing.〔The History of Vaseline Petroleum Jelly began in the Pennsylvania Oil Fields!, Drake Well Museum pamphlet, copyright 1996 by Holigan Group Ltd, Dallas, Texas〕〔(【引用サイトリンク】title=Vasoline corporate history page )〕 Robert Chesebrough, a young chemist whose previous work of distilling fuel from the oil of sperm whales had been rendered obsolete by petroleum, went to Titusville to see what new materials had commercial potential. Chesebrough took the unrefined black "rod wax", as the drillers called it, back to his laboratory to refine it and explore potential uses. Chesebrough discovered that by distilling the lighter, thinner oil products from the rod wax, he could create a light-colored gel. Chesebrough patented the process of making petroleum jelly by in 1872. The process involved vacuum distillation of the crude material followed by filtration of the still residue through bone char. Chesebrough traveled around New York demonstrating the product to encourage sales by burning his skin with acid or an open flame, then spreading the ointment on his injuries and showing his past injuries healed, he claimed, by his miracle product. He opened his first factory in 1870 in Brooklyn using the name Vaseline.〔The History of Vaseline Petroleum Jelly began in the Pennsylvania Oil Fields!, Drake Well Museum pamphlet, copyright 1996 by Holigan Group Ltd, Dallas, Texas〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「petroleum jelly」の詳細全文を読む スポンサード リンク
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