Abstract
This chapter covers solvent mixtures—azeotropes or blends—which are used in non-immersion cleaning, applied to part surfaces from small-capacity aerosol cans, and serve to make some wipe cleaning operations successful. These blends extend the use of solvents from cleaning entire parts or assemblies to cleaning local surfaces. Application of solvent from aerosol cans is a significant part of the solvent cleaning industry because useful cleaning work is completed without expenditure on infrastructure, overall SHE impacts are minimized, and high margins are produced for suppliers.
Prior to the 1990s, aerosol-dispensed cleaners were noted for being sold at low prices and being highly flammable. The reason for both aspects was their composition—the cleaning solvents were volatile low-cost hydrocarbons, alcohols, ethers, and the like. The propellants were usually (and often are today) also volatile and flammable hydrocarbons (propane, n-butane, isobutane, and blends thereof).
The value provided by these aerosol-dispensed cleaning solvents was threefold: They applied the cleaning agent only to locations on a surface where it was wanted; the cleaning agent was one selected to wet the soiled surface, penetrate/dissolve the soil structure, and so fulfill the needed cleaning requirement; and the cleaning agent was immediately evaporated without operator action (wiping), leaving a dry surface.
AbstractThis chapter covers solvent mixtures—azeotropes or blends—which are used in non-immersion cleaning, applied to part surfaces from small-capacity aerosol cans, and serve to make some wipe cleaning operations successful. These blends extend the use of solvents from cleaning entire parts or assemblies to cleaning local surfaces. Application of solvent from aerosol cans is a significant part of the solvent cleaning industry because useful cleaning work is completed without expenditure on infrastructure, overall SHE impacts are minimized, and high margins are produced for suppliers.Prior to the 1990s, aerosol-dispensed cleaners were noted for being sold at low prices and being highly flammable. The reason for both aspects was their composition—the cleaning solvents were volatile low-cost hydrocarbons, alcohols, ethers, and the like. The propellants were usually (and often are today) also volatile and flammable hydrocarbons (propane, n-butane, isobutane, and blends thereof).The value provided by these aerosol-dispensed cleaning solvents was threefold: They applied the cleaning agent only to locations on a surface where it was wanted; the cleaning agent was one selected to wet the soiled surface, penetrate/dissolve the soil structure, and so fulfill the needed cleaning requirement; and the cleaning agent was immediately evaporated without operator action (wiping), leaving a dry surface.
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