- published: 12 Oct 2015
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Whale oil (or "train oil") is oil obtained from whales. This was sourced from the blubber of the three species of right whale (Eubalaena japonica, E. glacialis, and E. australis) and the bowhead whale (Balaena mysicetus) as well as several other species of baleen whale - or in the case of sperm whale oil, from the head cavities of the sperm whale.
The first principal use of whale oil was as an illuminant in lamps and as candle wax. It was a major food of the aboriginal peoples of the Pacific northwest, such as the Nootka. Whale oil later came to be used in oiling wools for combing and other uses. It was the first of any animal or mineral oil to achieve commercial viability. It was used to make margarine and was the basis of very effective protective paint for steel, e.g. the original (but not current) Rust-Oleum.
Whale oil was heavily used in the mid 1700's and early 1800's. Whale oil's predominant place in society was mostly eliminated with the development of kerosene from coal in 1846, and the advances in petroleum drilling in the late 19th century, which led to petroleum-based waxes and oils replacing whale oils in most nonfood applications. Sperm whale oil was however still a key component in automatic transmission fluid until 1972. With the 1986 International Whaling Commission (IWC) moratorium on commercial whaling, whale oil has all but ceased to be viable, as substitutes have been found for most of its uses, notably jojoba oil.
Whale (origin Old English hwæl) is the common name for various marine mammals of the order Cetacea. The term whale sometimes refers to all cetaceans, but more often it excludes dolphins and porpoises, which belong to suborder Odontoceti (toothed whales). This suborder also includes the sperm whale, killer whale, pilot whale, and beluga whale. The other Cetacean suborder Mysticeti (baleen whales) are filter feeders that eat small organisms caught by straining seawater through a comblike structure found in the mouth called baleen. This suborder includes the blue whale, the humpback whale, the bowhead whale and the minke whale. All Cetacea have forelimbs modified as fins, a tail with horizontal flukes, and nasal openings (blowholes) on top of the head.
Whales range in size from the blue whale, the largest animal known ever to have existed at 30 m (98 ft) and 180 tonnes (180 long tons; 200 short tons), to various pygmy species, such as the pygmy sperm whale at 3.5 m (11 ft).
Whales collectively inhabit all the world's oceans and number in the millions, with annual population growth rate estimates for various species ranging from 3% to 13%. For centuries, whales have been hunted for meat and as a source of raw materials. By the middle of the 20th century, however, industrial whaling had left many species seriously endangered, leading to the end of whaling in all but a few countries.
An oil is any substance that is liquid at ambient temperatures and does not mix with water but may mix with other oils and organic solvents. This general definition includes vegetable oils, volatile essential oils, petrochemical oils, and synthetic oils.
First attested in English 1176, the word oil comes from Old French "oile", from Latin "oleum", which in turn comes from the Greek "ἔλαιον" (elaion), "olive oil, oil" and that from "ἐλαία" (elaia), "olive tree". The earliest attested form of the word is the Mycenaean Greek e-ra-wo, written in Linear B syllabic script.
Organic oils are produced in remarkable diversity by plants, animals, and other organisms through natural metabolic processes. Lipid is the scientific term for the fatty acids, steroids and similar chemicals often found in the oils produced by living things, while oil refers to an overall mixture of chemicals. Organic oils may also contain chemicals other than lipids, including proteins, waxes and alkaloids.
Lipids can be classified by the way that they are made by an organism, their chemical structure and their limited solubility in water compared to oils. They have a high carbon and hydrogen content and are considerably lacking in oxygen compared to other organic compounds and minerals; they tend to be relatively nonpolar molecules, but may include both polar and nonpolar regions as in the case of phospholipids and steroids.