Camphor light

SYNS CAMPHOR OIL, RECTIFIED CAMPHOR OIL WHITE CAMPHOR OIL YELLOW FORMOSA CAMPHOR OIL FORMOSE OIL OF CAMPHOR JAPANESE CAMPHOR OIL JAPANESE OIL OF CAMPHOR LIGHT CAMPHOR OIL LIGHT OIL OF CAMPHOR LIQUID CAMPHOR OIL CAMPHOR SASSAFRASSY OIL OF CAMPHOR RECTIFIED OIL OF CAMPHOR WHITE WHITE CAMPHOR OIL WHITE OIL OF CAMPHOR... 

OI) of Camphor, Rectified. Formosa oil of camphor Japanese oil of camphor white od of camphor light oil of camphor. Volatile od from Cinnamomum carnphora T. Nees A Eberm, Lauroceae. Constit. Safrot, acetaldehyde, camphor, terpineol, eugenol, cineo], d-pinene, phellandrene, dipentene. cadinere. 

Light oil of camphor is an almost colourless fraction containing a small amount of camphor, about 30% of cineole and the remainder terpenes. 

Observable Characteristics - Physical State (as shipped) Solid Color White light tan Odor Camphor-like. 

Photolysis of the blue solid (+)-10-bromo-2-chloro-2-nitrosocamphane (270) with red light produces two nitroxide radicals 271 and 272 and 10-bromo camphor 273, 10-bromo-2-chloro-2-nitro camphane 274 in addition to some minor products (equation 122). A complex reaction mechanism has been proposed144. 

In 1815 Biot12) recognized that certain liquid organic compounds and also the solutions of some solid substances like saccharose, camphor, and tartaric acid are capable of rotating the plane of linearly polarized light. He ascribed this to some inherent property of the compound molecules. This initiated a development which led to the concept of stereochemistry. 

Colorless to light tan, waxy or crystalline, nonflammable solid with a camphor-like odor... 

Camphor Oil, A constituent of crude camphor. It is usually separated into two fractions a)Red 0 7(also called Brown or Heavy Oil), contains fractions boiling betw 210 250°. Its d is 1.00 to 1.04, fl p ca 106°C and the principal constituents are terpineol, camphor, safrole, sequiterpene hydrocarbons and alcohols b)White or Light Oiltcontains fractions boiling betw 160 185°. Its d is. 870 to. 875, fl p ca 48°and the... 

Camphor Oil.—Light camphor oil (a by-product in the preparation of safrole), D --= 0-87-0-94, b.pt. about 170-180°, is especially used to adulterate or replace oil of turpentine. It raises the sp. gr. and the b.pt. of the latter. With the Halphen and Grimaldi, and the Herzfeld colour reactions (see preceding section) it behaves much like pinewood oil. It can be identified only when it is contaminated with safrole, which, according to Coen,1 reacts as follows ... 

Light camphor oils poor in, or free from, safrole do not give this reaction. 

The solvents more generally used are oil of turpentine, pinewood oil, methyl, ethyl or amyl alcohol, amyl acetate, acetone, ether, carbon disulphide, carbon tetrachloride, chloro-derivatives of ethane and ethylene, chlorohydrins, light mineral oils, light oils from tar, from resin or from shale, and camphor oil. 

B) Examination of the Solvents insoluble in Water. These may be carbon disulphide, chloroform, carbon tetrachloride, a chloro-derivative of ethane or ethylene, a chlorohydrin, amyl alcohol, amyl acetate, ether, benzene or a homologue, oil of turpentine, pinewood oil, light mineral oil, resin oil, tar oil, shale oil, or camphor oil. 

With other solvents, e.g., oil of turpentine, pinewood oil, light mineral oils, resin, tar, shale or camphor oil, the density and boiling point may be determined and various other determinations made, such as the rotation, refractive index, solubility in aniline, behaviour towards fuming nitric acid. The special reactions of resin oil, pinewood oil, shale oil and camphor oil may also be applied. 

Figure 4. Energetics of (-)camphor binding to a-cyclodextrin in light (black lines) versus heavy water.

Figure 5. Enantiodifferentiation of camphor by host-guest complexation with a-cyclodextrin. Left The temperature dependence in light water Right comparison of the differences in the enantiodifferentiation in light versus heavy water.

Features The stem, growing up to three feet, is branched, furrowed, and downy above egg-shaped, serrate leaves embrace the stem. The calyx is also egg-shaped and leafy, and the flowers, blooming in July and August, are large, solitary and terminal, brilliantly yellow in colour. The root is light grey, hard, horny and cylindrical. The whole plant is similar in appearance to the horseradish, its taste is bitter and acrid, and the odour reminiscent of camphor. 

An understanding of the three-dimensional structures of molecules has played an important part in the development of organic chemistry. The first experiments of importance to this area were reported in 1815 by the French physicist J. B. Biot, who discovered that certain organic compounds, such as turpentine, sugar, camphor, and tartaric acid, were optically active that is, solutions of these compounds rotated the plane of polarisation of plane-polarized light. Of course, the chemists of this period had no idea of what caused a compound to be optically active because atomic theory was just being developed and the concepts of valence and stereochemistry would not be discovered until far in the future. 

Fireworks for Use in Rooms, accord-rn/jf (o Perron. Mix 12 parts of saltpetre, 15 of flowers of sulphur, and 30 of gunpowder. Then dissolve 2 parts of camphor in 8 of spirit of wine, and 4 of gum Arabic in water. Knead the whole into a dough and form small cornered pieces from it which are dried. When ignited they give a beautiful light. 

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