Medicinal white oils

There are two categories of white oils technical white oils and medicinal white oils. The technical white oils, which are already highly dearomatized, are used for specialized lubricants, particularly in the textile industry, and also as components in cosmetics, as plasticizers in the rubber or plastics industries, or as emulsion bases for certain pulverized agriculture products. The medicinal white oils, whose dearomatization is pushed further still, are used in pharmaceuticals, or in the food industry, wherever residual oils might be in contact with food. 

L-100 (Mw — 1.4 0.1 x 10 , Mw/Mn — 2.2)4 in medicinal white oil as a rather high viscous solvent (1.50 poise at 25° C). In this figure the directly measured shear recovery (s ) (open triangles) is plotted against shear stress pzl of the preceding shear flow. From flow birefringence measurements (in a coaxial cylinder apparatus) and normal thrust measurements (in a cone-and-plate apparatus) values of normal stress difference (pn — p22) were calculated. These values were transformed with the aid of eq. (2.12) into recoverable shears s. The full circles (from... 

Process oils are not typical lubricants and are mostly used as processing aids in manufacture. They are generally additive-free mixtures of crude oil hydrocarbons and include products such as (i) medicinal white oils, (ii) technical white oils, (iii) bright process oils and (iv) dark process oils. Medicinal white oils are composed exclusively of isoparaffins and alkylnaphthenes. Technical white oils are less refined products than medicinal white oils and are composed of saturated hydrocarbons, though they may also contain a slight amount of aromatic compounds. Bright process oils include both yellow raffinates and brown distillates. Dark process oils are extracts from solvent refining of mineral base oils. 

In the preparation of an oil mull, the sample is ground in the same way as described previously, and a small quantity of an oil, usually a white mineral oil (such as a medicinal white oil), is added and mixed with the sample to form a stiff paste—to a consistency of petroleum jelly. The paste is distributed between a pair of infrared windows (usually KBr or NaCl) to form a thin translucent film. If the film appears to be totally opaque, then... 

Bottles (Plastic)— Plastic bottles made of suitable material may be used for the handling and storage of gas oil, diesel oil, fuel oil, and lubricating oil. Bottles of this type should not be used for gasoline, aviation jet fuel, kerosine, crude oil, white spirit, medicinal white oil, and special boiling point products unless testing indicates there is no... 

For medicinal or food grade white oils, a very high purity is required. This is controlled by tests analogous to food-grade paraffins ... 

There is also a category of petroleum products known as white oil that generally falls into two classes (1) technical white oil, which is employed for cosmetics, textile lubrication, insecticide vehicles, and paper impregnation, and (2) pharmaceutical white oil, which may is employed medicinally (e.g., as a laxative) or for the lubrication of food-handling machinery. 

Mineral oil (white oil) colorless or very pale oils within the lubricating oil boiling range and viscosity that are used for medicinal (pharmaceutical) oils and technical purposes, the chief difference being degree of refining. 

U.S. FDA UV Absorbance Limits for Food/Medicinal Grade White Oils... 

E. F. Gallei and M. Schwarzmann, The BASF Process for Preparation of Technical and Food- or Medicinal-Grade White Oils by Catalytic Hydrogenation, presented at the Congress of Large Chemical Plants, Antwerpen, Holland, 1982. 

A further component that can be varied, to take into account the requirement or specific needs of the end-use environment, is that of the continuous phase oil. For products to be used as thickeners in general industrial operations, such as Improved Oil Recovery or Print Paste formulations for textiles, this phase is usually based on a mineral oil hydrocarbon. In products developed for more specialised or demanding end uses, such as cosmetic and toiletry formulations, special grades are available where the continuous phase is a medicinal-grade high-purity white oil. Hydrophobic esters and even silicone-based fluids have also been used as the continuous oil phase. 

Inverse emulsion/LDP product types usually provide formulations which are opaque, as the oil phase present as the continuous phase in the product as supplied, becomes emulsified as a disperse phase in the formulation. Additional formulating options are available from grades which have hydrocarbon phases chosen to match the requirements of niche end uses. Medicinal grade white oils , hydrophobic esters and even silicone oils have been considered as the hydrocarbon phase for these polymers. 

Animal and Vegetable Oils. Animal and vegetable oils, as the terms indicate, are oils derived from those sources. They can be used where food contact is likely to occur and the lubricant must be edible. Their main disadvantage is that most of them tend to deteriorate rapidly in the presence of heat. Petroleum oils, on the other hand, can be refined to such a degree that all undesirable components can be removed and thus be labeled USP or white oil, suitable for medicinal, cosmetic, or incidental food-contact applications. 

Indole ORG chem Carcinogenic, white to yellowish scales with unpleasant aroma soluble in alcohol, ether, hot water, and fixed oils melt at 52°C used as a chemical reagent and in perfumery and medicine. Also known as 2,3-benzopyrrole. in idol ... 

Uses Antioxidant photographic reducer and developer for black and white film determination of phosphate dye intermediate medicine in monomeric liquids to prevent polymerization stabilizer in paints and varnishes motor fuels and oils. 

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