Mineral oil light

Praseodymium is soft, silvery, malleable, and ductile. It is somewhat more resistant to corrosion in air than europium, lanthanum, cerium, or neodymium, but it does develop a green oxide coating that spalls off when exposed to air. As with other rare-earth metals, it should be kept under a light mineral oil or sealed in plastic. 

The metal has a bright silvery metallic luster. Neodymium is one of the more reactive rare-earth metals and quickly tarnishes in air, forming an oxide that spalls off and exposes metal to oxidation. The metal, therefore, should be kept under light mineral oil or sealed in a plastic material. Neodymium exists in two allotropic forms, with a transformation from a double hexagonal to a body-centered cubic structure taking place at 863oC. 

On a fresh surface the metal has a steely lustre but rapidly tarnishes in air as a result of surface formation of oxide and carbonate species. For protection against oxidation the metal is usually stored in a light mineral oil. When made finely divided, eg, on being cut, it can be strongly pyrophoric, and, for this reason is used, as the ferro-alloy mischmetal, in lighter flints and ordnance. Cerium reacts steadily with water, readily dissolves in mineral acids, and is also attacked by alkafl it reacts with most nonmetals on heating. 

Sodium acetylide [1066-26-8] M 48.0, was prepd by dissolving Na (23g) in liquid NH3 (IL) and bubbling acetylene until the blue color was discharged (ca 30min) and evapd to dryness [Saunders Org Synth Coll Vol III 416 7955] and is available commercially as a suspension in xylene/light mineral oil. [See entry in Chapter 5.]... 

Elektrion Also called Volto. A method of increasing the molecular weight, and thus the viscosity, of a mixture of light mineral oil and a fatty oil, by subjecting it to an electric discharge in a hydrogen atmosphere. 

In the cyclization of phenoxy derivatives of (phenylamino)methylene-malonate (253, R = PhO), Finol, a light mineral oil, was used as a high-boiling solvent because of the high solubility of the phenoxyquinoline-3-carboxylates (567) in Dowtherm A (46JA1264). 

Anhydrous theophylline was dispersed into a 12% w/v homogenous sol of Eudragit in a suitable solvent. This mixture was poured at 10°C, in a thin stream, into 400 ml of light mineral oil (absolute viscosity, 95-105 cP at 10°C), while stirring the system at400 10 rev/min. After 20 min, suitable non-solvent (Table 1) was added dropwise to effect hardening of the particles. 

Light Mineral Oil 25.0 Mackazoline 0 (Oleyl Hydroxyethyl Imidazoline) 1.2 Oleic Acid 2.0 Water 71.8... 

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. 

Light mineral oils 0-750-0-820 120-200° Inactive 0-20 In com-p 1 e t e (becomes turbid at 55-70°) Not attacked... 

If the tar oils are accompanied by small quantities of mineral oils, the latter may dissolve in the aromatic nitro-derivatives and so settle to the bottom of the vessel. In such case the deposited layer is separated and distilled in a small flask, only the first portions of the distillate, containing the bulk of the light mineral oils, being collected. This is treated with zinc and hydrochloric acid (cooling somewhat) to reduce the nitro-com-pounds, and diluted with water the amines formed dissolve in the water as hydrochlorides and the mineral oils separate as slightly coloured light drops. 

Lubricating products range from light mineral oil to dry lubricants incorporating molybdenum disulfide, fluorocarbons (PTFE), and other synthetic lubricants. 

The first issue in the preparation of the hydride slurry was the selection of the carrier fluid for the slurry. Light mineral oil has been selected for the carrier fluid because it is not chemically reactive with the metal hydride, it produces a relatively low vapor pressure, it is nontoxic, and it remains a liquid through the temperature range of-40 to 200 °C. 

Light mineral oil 1-3 Fluid Lubricants Hydrophobic, can be applied to either formulation... 

Sodium amide (2.79 mol) and 110 ml light mineral oil were heated to 45 °C whereupon hexamethyldisilazane (0.03 mol) was added. Over 50 minutes, 3-chloro-2-methylpropene (2.23 mol) was slowly added and the evolving gas scrubbed with water then condensed in a dry ice cooled trap. The total product weight consisted of 39.5 g of which 39.3 g comprised 1-methyl-cyclopropene. 

The most popular and successful adjuvants have been the water in oil emulsions developed by Freund. The basic ingredients of light mineral oil (Bayol) and emulsifying agents mixtures such as Arlacel (A or C) are available commercially. The reagents are emulsified with either solutions or suspensions of the immunogen (incomplete Freund s adjuvant). The addition of mycobacteria (Mycobacterium butyricum, M. tuberculosis) in small amounts to the suspension (complete Freund s adjuvant) leads to a further enhancement of the immune response. This has been attributed to the increased local inflammatory response caused by the mycobacteria. ... 

Solutions, nasal Solutions of drugs for instilling in the nose rather than spraying are generally a modern development. The first nasal solutions were formulated with menthol and thymol dissolved in light mineral oil. Later isotonic aqueous solutions were designed as drops. ... 

Sprays Medicated liquids prepared for dispersal by atomizers or nebulizers, usually on external surface or mucous membranes of the respiratory tract. In the United States Pharmacopoeia, sprays were called inhalatio the National Formulary referred to them as nebulae. Sprays of the early twentieth century were formulated with aromatics dissolved in light mineral oil. As injuries from inhaled oils became apparent, especially among children, these sprays were displaced by buffered aqueous solutions. ... 

Mineral oil—a mixture of liquid hydrocarbons obtained from petroleum. These are useful as levigating agents to wet and incorporate solid substances (e.g., salicylic acid, zinc oxide) into the preparation of ointments that consist of oleaginous bases as their vehicle. There are two types of mineral oils listed in the US. Pharmacopeia/National Formulary (USP/NF). Mineral oil USP is also called heavy mineral oil with a specific gravity between 0.845 and 0.905 and a viscosity of not less 34.5 cSt (cSt = mm /s) at 40°C. Light mineral oil, NF has a specific gravity between 0.818 and 0.880 and a viscosity of not more than 33.5 cSt. Table 2 lists the commercially available mineral oil fractions. 

Mineral oil and lanolin alcohols light mineral oil paraffin petrolatum. 

BP Light liquid paraffin JP Light liquid paraffin PhEur Paraffinum perliquidum USPNF Light mineral oil... 

Light mineral oil is a transparent, colorless liquid, without fluorescence in daylight. It is practically tasteless and odorless when cold, and has a faint odor when heated. The USPNF 23 specifies that light mineral oil may contain a suitable stabilizer. 

Light mineral oil is used in applications similar to those of mineral oil. It is used primarily as an excipient in topical pharmaceutical formulations where its emollient properties are exploited in ointment bases see Table I. It is also used in ophthalmic formulations. Light mineral oil is additionally used in oil-in-water and polyethlylene glycol/gylcerol emulsions as a solvent and lubricant in capsules and tablets as a solvent and penetration enhancer in transdermal preparations and as the oily medium used in the microencapsulation of many drugs. ... 

Light mineral oil is also used in cosmetics and certain food products. 

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