Orange oil

Orange oil is also known as orange peel oil (Latin dulcis Aurantii Aetheroleum ). There are two main varieties of orange oil:

• Orange oil, sweet
• Orange oil, bitter

Orange oil, sweet

Orange oil, sweet

• 8008-57-9

Attention

• > 5000 mg · kg -1 ( rat, oral)
• > 5000 mg · kg -1 (rabbit, dermal)

Is obtained by cold pressing of the ripe fruit peel of Citrus sinensis variety of orange. The fruit cups are a byproduct of orange juice manufacture and accumulate in large quantities. The orange oil is by far the most widely produced essential oil, the world's annual production is approximately 20,000 tons ( 2002 ). Germany imported more than 2,000 tonnes of orange oil in 2001. It is next to clove leaf oil and eucalyptus oil to the cheapest essential oils. By far Brazil is the most important production site for orange oil, next are California, Florida and Sicily of importance.

Chemical constituents and physical properties

Orange oil is a yellow to orange red liquid. The density is · cm -3 at 0.83 to 0.86 g.

The ( ) -limonene, with over 90% of the main component of orange oil. Next to it are still the aldehydes octanal and decanal, sinensal and octyl and neryl acetate. The latter give the orange oil aroma. The ester content, which varies from region to region, plays an important role in relation to the sale price.

Areas of application

Orange oil is mainly used for flavoring beverages, confectionery and for perfuming household products, beside still in biological wood preservatives and paint thinners. It is also the main ingredient of many label remover. It is also very popular as a flavoring oil in fragrance lamps for room scenting. The orange oil is undiluted on the skin irritant, allergenic and phototoxic, so it should not be applied to the skin better.

Orange oil, bitter

Orange oil, bitter

• 8028-48-6

Attention

> 2000 mg · kg -1 ( rat, oral)

Derived from the peel of Citrus aurantium (Sicily, Spain). It has a rather mandarin -like smell and a bitter flavor. The world production is about 10 tons, and it is used to flavor liqueurs and toilet waters.

Examples of application technology

The field of application is the same as turpentine. A higher price are offset by a more agreeable odor and a lower allergenic potential.

Applications are:

• Degreasing of metal parts, such as bicycle chains, gears or bearings. For larger parts of the orange oil is more suitable due to the high price.
• Remove tar, resin and oil stains
• As a brush cleaner and for diluting oil colors
• Deresination of precision mechanical parts such as old watch parts
• As a substitute for turpentine in painting
• As a flavoring agent in foods
• The flavoring of cosmetics ( soap, bath oil, cream).

Hazards

The main ingredient of limonene is characterized by the Hazardous Substances Ordinance with "Xi" (irritant) and "N" ( environmentally hazardous). Orange peel oil is flammable and must therefore be kept away from ignition sources and be kept tightly closed. It irritates the skin and mucous membranes. A contact should be avoided. During the work is also to ensure good ventilation. After contact with skin, orange peel oil must be washed off with soap and water. Product residues must be placed in the hazardous waste collection.

An allergizing exists, it is considerably lower than with other terpenes.

Many plastics, particularly polyacrylates and lacquered furniture surfaces to deteriorate and dissolve.

In male rats, a carcinogenic ( carcinogenic ) effect was observed. Here limonene with α2U -globulin, which is not produced by female rats responding. People produce the protein does not so it is expected that limonene on human does not affect carcinogenic.

Swell

• Environmentally hazardous substance
• Sensitizer
• Volatile oil
• Detergent