Solvent cleaning safety

Solvent cleaning, the oldest method, preferably in the vapour phase. There are severe restrictions on the use of solvents, chlorinated ones in particular, and safety, environmental and fire risks. Convenient solvents, which must be compatible with the substrate, can dissolve oils, greases and other organic contaminants. Generally, the parts... 

Curzons, A., C. Constable, and V. Cunningham. 1999. A guide to the integration of environmental, health and safety criteria into the selection of solvents. Clean Prod. Process. 1 82-90. 

Stoddard solvent is a colorless, flammable liquid that smells and tastes like kerosene. It will turn into a vapor at temperatures of 150 to 200 °C. Stoddard solvent is a petroleum mixture that is also known as dry cleaning safety solvent, petroleum solvent, and varnoline its registered trade names are Texsolve S and Varsol 1 . It is a chemical mixture that is similar to white spirits. Stoddard solvent is used as paint thinner in some types of photocopier toners, printing inks, and adhesives as a dry cleaning solvent and as a general cleaner and degreaser. 

A. D. Curzons, D. C. Constable and V. L. Cunningham, Solvent Selection Guide A Guide to the Integration of Environmental, Health and Safety Criteria into the Selection of Solvents, Clean Products and Processes, 1, 82-90 (1999). 

Synonym(s) Dry cleaning safety solvent, ATSDR 1995b ... 

SYNONYMS dry cleaning safety solvent, naphtha safety solvent, petroleum solvent, spotting naphtha, vamoline, white spirits. 

Synonyms/Trade Names Dry cleaning safety solvent, Mineral spirits, Petroleum solvent. Spotting naphtha [Note A refined petroleum solvent with a flash point of 102-110T, boiling point of 309-396°F, and containing >65% Cip or higher hydrocarbons.] ... 

Synonyms mineral spirits dry cleaning safety solvent... 

Enclosed vapor degreasers have become popular and necessary in the last two decades (Box 2.1). The reason is that non-solvent cleaning methods (particularly aqueous cleaning technology) don t provide adequate performance, and some users desire or need to use solvents about which there are SHE (safety, health, and environmental) concerns — particularly perchloroethylene, methylene chloride, trichloroethylene, and n-propyl bromide (in that order). 

Not all sites view the adsorption unit as a positive addition to the value of an enterprise. Some sites view it as a distinct drawback to the use of solvent cleaning technology. They ascribe the need for it to the advent of more stringent safety, exposure, and pollution (SHE) regulations. 

Four safety factors must be considered in all solvent cleaning operations toxicity, flammability. 

Dry cleaning - Several solvents exist to replace the ozone-depleting solvents that have traditionally been used by the dry cleaning industry. Perchloroethylene has been used for more than three decades. Petroleum solvents, while flammable, can be safely used when appropriate safety precautions are taken. They include white spirit, Stoddard solvent, hydrocarbon solvents, isoparaffins, and n-paraffin. A... 

Significant improvements in yields or reaction conditions can be achieved, together with considerable simplification of operating procedures. The powerful synergistic combination of PTC and microwave techniques has certainly enabled an ever increasing number of reactions to be conducted under clean and mild conditions. The inherent simplicity of the method can, furthermore, be allied with all the advantages of solvent-free procedures in terms of reactivity, selectivity, economy, safety, and ease in manipulation. 

Pointing out that the acidic nature of LiPFe assists the dissolution of Mn + into electrolyte solution, the authors speculated that HF in the electrolyte solution efficiently cleans up the spinel surface of MnO therefore, the bulk electrolyte solvents can be continuously exposed to the fresh surface of Mn204 and be oxidized. As a result, solvent oxidation would proceed more rapidly as compared with the case of an electrolyte that is less acidic. Therefore, for a spinel manganese-based lithium ion cell, a higher thermal safety would be obtained with lower salt concentration, and the authors suggested 0.5 M as the optimum concentration at which the ion... 

Providing the required Material Safety Data Sheet (MSDS) for the hydrocarbon solvent used in the cleaning process. 

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