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순도시험
(1) 비중 : 이 품목의 비중은 0.810～0.830이어야 한다.
(2) 굴절률 : 이 품목의 굴절률 
은 1.417～1.425이어야 한다.
(3) 용상 : 이 품목 1mL를 70% 에탄올 3mL에 녹일 때, 그 액은 징명하여야 한다.
(4) 산가 : 이 품목의 산가는 향료시험법 중 산가측정법에 따라 시험할 때, 10 이하이어야 한다.
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확인시험
(1) 이 품목 1mL에 아황산수소나트륨시액 4mL를 넣고 흔들어 섞으면 곧 열을 발생하여 결정체가 생긴다.
(2) 이 품목 1mL에 염산히드록실아민 1g, 에탄올 5mL 및 피리딘 5mL를 넣고 환류냉각기를 달아 수욕중에서 가끔 흔들어 섞으면서 30분간 가열한 다음 수욕 중에서 용매를 없애고 식히면 결정이 생긴다. 이에 물 10mL를 넣고 흔들어 섞은 다음 결정을 60% 에탄올을 용매로 하여 재결정할 때, 그 융점은 약 60℃이다.
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정량법
이 품목 약 1g을 정밀히 달아 향료시험법 중 알데히드류 및 케톤류함량측정법의 히드록실아민법 제1법에 따라 시험한다. 다만, 방치시간은 15분간으로 한다.
0.5N 알콜성수산화칼륨용액 1mL ＝ 64.11mg C8H16O
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개요
May be prepared by oxidation of the corresponding alcohol or
reduction of the corresponding acid; also from coconut fatty acids
via methyl-n-octanoate.
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화학적 성질
Octanal occurs in several citrus
oils, for example, orange oil. It is a colorless liquid with a pungent odor, which
becomes citrus-like on dilution. Octanal is used in perfumery in low concentrations,
in eau de cologne, and in artificial citrus oils.
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출처
Reported found in the essential oils of sweet orange, bitter orange, mandarin, tangerine, grapefruit, Mexican
lime, lemon, Taiwan citronella, rose, lemongrass, Pinus sabiniana, Pinus jefferyi, Xanthoxylum rhetsa, lime petitgrain, clary sage,
lavandin, and others. Also reported in over 180 foods and beverages including apple, apricot, many berries, guava, grapes, melon,
papaya, celery, peas, potato, potato chips, tomato, ginger, spearmint oil, cheeses, butter, milk, cooked egg, fish and fish oil, meats,
hop oil, beer, rum, cider, white wine, cocoa, tea, roasted filberts and peanuts, pecans, oats, coconut products, soybean, avocado, passion
fruit, starfruit, beans, mushroom, trassi, macadamia nut, sesame seed, mango, cauliflower, tamarind, fig, calamus, rice, sweet
potato, dill, lovage, caraway seed, corn oil, corn tortillas, loquat, shrimp, lobster, oyster, crab, crayfish, clam, maté, angelica root oil
and mastic gum oil.
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용도
Octanal is an aromatic aldehyde often found in citrus oils. It is used commercially as a component in perfumes and in flavor production for the food industry.
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제조 방법
By oxidation of the corresponding alcohol or reduction of the corresponding acid; also from coconut fatty acids via
methyl-n-octoate.
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정의
ChEBI: A fatty aldehyde formally arising from reduction of the carboxy group of caprylic acid (octanoic acid).
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일반 설명
Colorless liquids with a strong fruity odor. Less dense than water and insoluble in water. Flash points 125°F. Used in making perfumes and flavorings.
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공기와 물의 반응
Flammable. Insoluble in water.
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반응 프로필
OCTYL ALDEHYDES are aldehydes. Aldehydes are frequently involved in self-condensation or polymerization reactions. These reactions are exothermic; they are often catalyzed by acid. Aldehydes are readily oxidized to give carboxylic acids. Flammable and/or toxic gases are generated by the combination of aldehydes with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Aldehydes can react with air to give first peroxo acids, and ultimately carboxylic acids. These autoxidation reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). The addition of stabilizers (antioxidants) to shipments of aldehydes retards autoxidation.
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건강위험
Inhalation may be irritating to mucous membrane; overexposure may cause dizziness and collapse. Ingestion causes irritation of mouth and stomach. Contact with eyes or skin causes irritation.
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화재위험
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
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Safety Profile
Mildly toxic by
ingestion and skin contact. A skin and eye
irritant. Flammable liquid when exposed to
heat, sparks, or flame. Can react with
oxidizing materials. To fight fire, use foam,
CO2, dry chemical. See also ALDEHYDES.
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신진 대사
Aldehydes C-8, C-10, C-12 and C-14 (myristic), the lower unsubstituted aliphatic aldehydes, are readily oxidized in the animal body to the corresponding fatty acids, which normally undergo oxidation and are eventially oxidized to carbon dioxide and water.
