Alpha Cleaning Solvents

Alpha 564M and 565 are functionally azeotropic blends of a chlorinated solvent and a polar component, designed for effective cleaning of post-soldering flux residues from pcb s and other electronic assemblies. Both formulations have no flash points. Compared to the fluorocarbons, they are more aggressive, more effective cleaners, yet lower in cost. 

Value Evaporating Rate (relative) Solubility of Water In 182 206 

Relative evaporation rate calculated with a value of 1.00 assigned to FC113. 

Alpha 1001 and 1003 are azeotropes of Fluorocarbon 112 (tetrachlorodifluoroethane) and polar alcohols formulated for effective cleaning of postsoldering flux residues from pcb s and other electronic assemblies. Compared to chlorinated solvents, they are less aggressive and can be used on normally solvent-sensitive plastic materials. They are more effective solvents than Fluorocarbon 113 (trichlorotrifluoroethane)-based products, because of the extra chlorine atom. 

Contains 28% isopropyl alcohol and has a Tag Open Cup Flash Point of 85 °F. 

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Table 3.S8 Alpha Cleaning Solvents (62) Alpha 564M and 565...

Second, as a solvent recycle process, which ran for 54 hours without solvent clean-up to treat 3.85 L of a DIAMEX An(III) + Ln(III) product. This second hot test, which generated 6.5 L of Am(III) + Cm(III) product, revealed partial degradation of t Pr-BTP, probably because of alpha/gamma radiolysis reflected by a 40% decrease in the solvent-extraction performance observed after two cycles (207). 

The excretion of uranium in fecal material results primarily from intakes by ingeshon, and includes uranium swallowed after inhalation. Usually, uranium will appear in feces within hours after intake thus providing a rapid means of determining whether an intake has occurred. Fecal analysis requires prechemistry preparation that includes ashing of the sample, cleaning by co-precipitation, and solvent extraction followed by electrodeposition. Alpha spectroscopy is then performed (Singh and Wrenn 1988). Urinalysis is typically favored over both fecal and blood analysis because it is generally more sensitive and less costly, and because fecal analysis provides no uptake or retention information and blood analyses is invasive. 

Chemically, OXSOL 2000 is alpha, alpha, alpha-trifluorotoluene, an HFC. OXSOL 2000 has a number of desirable properties for precision cleaning, electronics cleaning, aerosol applications, and wipe cleaning. It is a pure compound, with a relatively fast evaporation rate and toluene-like odor. In its pure form, OXSOL 2000 is a good replacement for hexane, toluene, and VM P naphtha where a rapid evaporation rate is desirable and a flammable solvent can be used safely. In addition, OXSOL 2000 can be blended with classical solvents like trichloroethylene yielding non-flammable, very fast evaporating compositions. 

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