C special

C. Specialized Heterocycles 1. Nitrogen Heterocycles (Except Alkaloids)... 

C special abrasion test with abrasive powders haze after abrading. 

There are many other examples in the literature where sealed-vessel microwave conditions have been employed to heat water as a reaction solvent well above its boiling point. Examples include transition metal catalyzed transformations such as Suzuki [43], Heck [44], Sonogashira [45], and Stille [46] cross-coupling reactions, in addition to cyanation reactions [47], phenylations [48], heterocycle formation [49], and even solid-phase organic syntheses [50] (see Chapters 6 and 7 for details). In many of these studies, reaction temperatures lower than those normally considered near-critical (Table 4.2) have been employed (100-150 °C). This is due in part to the fact that with single-mode microwave reactors (see Section 3.5) 200-220 °C is the current limit to which water can be safely heated under pressure since these instruments generally have a 20 bar pressure limit. For generating truly near-critical conditions around 280 °C, special microwave reactors able to withstand pressures of up to 80 bar have to be utilized (see Section 3.4.4). 

Sicard M, Ramone H, Bran N-le, Pages S, Moulia C. Specialization of the entomopathogenic nematode Steinernema scapterisci with its mutualistic Xenorhabdus symbiont. Naturwissenschaften. 2005 92 472-476. 

The behaviour with water depends on the grade, stabilization and the temperature. Above 50° C, special stabilization is needed. 

C Special producer limits and related controls are also imposed by the Rubber Research Institute of Malaysia (RRIM) to provide an additional safeguard. 

Figure 1. Diagram of the apparatus used in the s3mthesis and isolation of V(CO)g. Components (A) round-bottom flask, 500 mL (B) connecting tube, (C) specially adapted Schlenk tube receiver (D) stopcock (E) Dewar flask (F) water bath (G) butyl rubber vacuum tubing connection to vacuum/argon manifold. Dimensions a =165 mm b = 130 mm c = 170 mm d = 75 mm e = 20mm od.

Thermometers. Conventional mercury thermometers are used to measure temperatures not exceeding 300 °C. Special thick-walled glass thermometers make it possible to determine temperatures up to 500 °C. 

Altitude Amb.Temp.Max. °C Special Tests Listed Below ... 

Cutters. See under Cartridges and Cartridge -Actuated Devices, item c)Special Purpose Devices in Vol 2, p C71-R... 

After this rather mathematical treatment, the more chemical aspects of Mdssbauer spectroscopy will be discussed in Section I, C. Special emphasis is here on information pertinent to catalysis. 

Many aerosol materials have been used, and the aerosol material can be specifically chosen to minimize interference with the chemical separation being conducted. Widely used were KC1 aerosols which can easily be generated by sublimation of KC1 from a porcelain boat within a tube furnace. By choosing a temperature between 650°C and 670°C, specially tailored aerosols with a mean mobility diameter of about 100 nm and number concentrations of few times 106 particles/cm3 could be generated. The same technique could be applied to produce MoOj aerosols. Carbon aerosol particles of similar dimensions were generated by spark discharge between two carbon electrodes. 

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