Microcrystalline Wax, Refined

Chem. Descrip. Highly refined microcrystalline wax CAS 63231-60-7 EINECS/ELINCS 264-038-1 Uses Modifier wax direct food additive and food-contact applies. protective coating on raw truits/vegetable masticatory substance in chewing gum base... 

The largest single source of hydrocarbon waxes is from petroleum. These waxes are a byproduct of the gasoline/oil refinement process. Petroleum waxes are divided into two main groups, paraffin waxes and microcrystalline waxes, both of which are hydrocarbons... 

SYNS MICROCRYSTALLINE WAX PETROLEUM WAX, SYNTHETIC (FCC) REFINED PETROLEUM WAX... 

Petroleum Waxes. Waxes derived from petroleum are hydrocarbons of three types paraffin [64742 3 ] (clay-treated) semimicrocrystalline or intermediate and microcrystaUine [64742-42-3] (clay-treated). SemimicrocrystaUine waxes are not generally marketed as such (7). Others include acid-treated, chemically neutralized, and hydrotreated and paraffin and hydrocarbon waxes, untreated. The quaHty and quantity of the wax separated from the cmde oil depends on the source of the cmde oil and the degree of refining to which it has been subjected prior to wax separation. Petroleum waxes are produced in massive quantities throughout the world. Subject to the wax content in the cmde, paraffin and, to a substantially lesser degree, microcrystalline wax are produced in almost all countries of the world that refine cmde oil. Production capacity in the United States and imports for the years 1990 to 1995 are Hsted in Table 2. Canada suppHes over 50% of the petroleum wax imported into the United States (3). 

Petrolatum is usually a soft product containing approximately 20% oil and melting between 38°C (100°F) and 60°C (140°F). Petrolatum or petroleum jelly is essentially a mixture of microcrystalline wax and oil. It is produced as an intermediate product in the refining of microcrystaUine wax or compounded by blending appropriate waxy products and oils. Petrolatum colors range from the almost black crude form to the highly refined yellow and white pharmaceutical grades. 

Paraffin wax is generally white in color, whereas microcrystalline wax and petrolatum range from white to almost black. A fully refined wax should be virtually colorless water-white) when examined in the molten state. Absence of color is of particular importance in wax used for pharmaceutical purposes or for the manufacture of food wrappings. The significance of the color of microcrystalline wax and petrolatum depends on the use for which they are intended. In some applications (for example, the manufacture of corrosion preventives) color may be of little importance. 

D. Hess, Microcrystalline Wax Under the Microscope, Paper LW-00-123, presented at the Lubricants and Waxes meeting of the National Petroleum Refiners Association, Houston, Texas, November 9-10, 2000. 

An obvious new source of highly refined waxes is from Fischer-Tropsch wax—this type of wax is already on the market from Shell s Bintulu plant in Malaysia, and it undoubtedly will be upgraded, if it has not been already, to meet FDA standards and equivalent ones from other countries. It will be unique in its properties because of the near-complete absence of isoparaffins and the heavy waxes will contain no naphthene components that give microcrystalline waxes their properties. 

Amorphous Microcrystalline Wax. [bitT. Wax Refining] Antioxidant for rubbers. 

For example. Burger et al. (1981) characterized an oil sample composed of 14% wax, 58% of which included hydrocarbons in the range and Barker (1995) noted that microcrystalUne waxes in a refined petroleum sample was composed of 20-40% H-alkanes, 15-40% wo-alkanes and 35% cycloalkanes. The HMWHCs in the 40. region are of particular interest since they are thought to be the primary culprit in wax deposition problems. Case studies have demonstrated that a minimal microcrystalline wax content of 2% in an oil can result in wax deposition problems (Holder Winkler 1965 Tuttle 1983 Ajienka Ikoku 1990). 

Waxes Waxes are an additional class of materials used to improve rubber ozone protection primarily under static conditions. Waxes used in elastomeric formulations fall into two categories microcrystalline and paraffin. Microcrystalline wax has a melting point in the range of 55-100 C and is extracted from residual heavy lube stock of refined petroleum. Paraffin wax has melting points in the range of 35-75°C and is obtained from the light lube distillate of crude oil. 

Synonyms Microcrystalline wax Petroleum wax, synthetic Refined petroleum wax... 

Multiwax X-145A f[Crompton/Witco Refined Prods.] Ombrelub EF 970 t[Munzing Chemie GmbH http //www.munzing-chemie.com] Paracol 404C [Hercules http //www.herc.com]] Permulgin 835 [Koster Keunen http //www.kosterkeunen.com]] Ross Microcrystalline Wax 165 f[Frank B. Ross]... 

Petroleum sulfonates, sodium salts Petroleum sulfonic acid, monosodium salt. See Sodium petroleum sulfonate Petroleum thinner. See VM P naphtha Petroleum wax CAS 977051-70-9 UN 1223 (DOT) INS905c Synonyms Microcrystalline wax Petroleum wax, synthetic Refined petroleum wax Classification Petroleum hydrocarbon Definition Hydrocarbon derived from petroleum three types paraffin waxes, microcrystalline waxes, and petrolatum waxes Properties Translucent wax, odorless, tasteless very si. sol. in org. soivs. insol. in water m.p. 48-93 C... 

The paraffin and microcrystalline waxes are mixtures of solid, saturated hydrocarbons that are produced by distillation and solvent refining from crude oil. The paraffin waxes are mostly linear alkanes with chain lengths varying from about 20 to about 50 carbons. The microcrystalline waxes contain many more branched chains and/or cyclic... 

Although the true waxes, such as beeswax, are esters of fatty acids with alcohols, the term is often applied to certain solid substances which melt at fairly low temperatures, e.g., paraffin wax. Paraffin waxes (crystalline and microcrystalline) are obtained from the refining of petroleum, and are used in rubber compounding as protective agents. They have the property of blooming to the surface of the product, forming a thin film which replenishes itself if removed in service. 

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