Preservative oils

Large-scale recovery of light oil was commercialized in England, Germany, and the United States toward the end of the nineteenth century (151). Industrial coal-tar production dates from the earliest operation of coal-gas faciUties. The principal bulk commodities derived from coal tar are wood-preserving oils, road tars, industrial pitches, and coke. Naphthalene is obtained from tar oils by crystallization, tar acids are derived by extraction of tar oils with caustic, and tar bases by extraction with sulfuric acid. Coal tars generally contain less than 1% benzene and toluene, and may contain up to 1% xylene. The total U.S. production of BTX from coke-oven operations is insignificant compared to petroleum product consumptions. 

Jackson, D. R. Bisson, D. L. (1990). Mobility of polychlorinated aromatic compounds in soils contaminated with wood-preserving oil. Journal of Air Waste Management Association, 40, 1129—33-... 

To remove heavy lubricating and preservative oils and greases, many solvents may be used to specific needs. Aerosol GPG Surfactant will be found to be soluble in all of these solvents. A typical formulation used is ... 

The principal wood preservatives in use today are classified as (a) preservative oils, (b) toxic chemicals in organic solvents, and (c) water-soluble salts. 

Cold soaking of seasoned wood in low-viscosity preservative oil for several hours or days and the steeping of green or seasoned... 

Use Hardwood pitch, wood creosote, heavy high-boiling wood oils, wood-preserving oils, paint thinners. 

Thin, eroded caprocks may allow steady state gas diffusive leakage, preserving oil in place (cf. Fig. 7) whilst thick tight caprocks can hold... 

Preservatives, Although not generally classified as wood finishes, preservatives do protect wood against weathering and decay, and much preservative-treated wood is exposed without any additional finish (4), The following are the three main types of preservative (an example of each is given in parentheses) (4) preservative oils (coal-tar creosote), organic solvent solutions (pentachlorophenol), and waterborne salts (chromated copper arsenate). 

Chem. Descrip. Calcium sulfonate/carbonate complex in oil Uses Corrosion inhibitor in automotive (body frame), marine, nuclear coatings, greases and lubricating coatings, preservative oils, coatings for elec, components and wire rope/cable, and storage coatings with reduced VOC... 

Uses Biocide for water treatment, cooling water systems, evaporate condensers, pulp/paper, antifoulant paints, leather, timber preservation, oil well brines and drilling muds wood preservative (stops wood rot, termite attack, mildew, and decay) algicide fungicide bactericide slimicide in paper mills, food-contact paper/paperboard preservative for paints, adhesives, syn. polymer latexes, latex emulsions antimicrobial for aq. prods., thickeners, slurries Regulatory FDA 21 CFR 176.300... 

Hexahydro-1,3,5-triethyl-s-lriazine preservative, oil field water-flooding... 

Poly (hexamethylenebiguanide) hydrochloride preservative, mouthwashes Bromochlorophene Chlorhexidine digluconate preservative, mucilage Sodium salicylate preservative, nebulizer solutions Potassium bisulfite preservative, nontherapeutic 8-Hydroxyquinoline preservative, nonwovens Poly (hexamethylenebiguanide) hydrochloride preservative, NR latex Tetramethylthiuram disulfide Zinc diethyidithiocarbamate preservative, oil field chemicals Dimethyl oxazolidine preservative, oil recovery Tributyltin oxide preservative, oils Maleic acid... 

Wood tar (1857) n. A black, syruplike, viscous fluid that is a by-product of the destructive distillation of wood and is used in pitch, wood preserving oils, preservatives, and medicine. 

Italy, Spain, Greece Salad oils, preserving oils, soaps... 

This family generally needs good surface preparation, except for a few special formulations and the heat-cured, toughened variants, which have proved very tolerant of contamination. Protein-based preserving oils on the surface, however, pose difficulties. 

Cold soaking of seasoned wood in low-viscosity preservative oil for several hours or days and the steeping of green or seasoned wood in waterborne preservatives for several days are methods sometimes employed for posts, lumber, and timbers on a limited basis. The diffusion process employs water-borne preservatives that will diffuse out of the treating solution into the water in green or wet wood. 

Uses Lubricant, wetting agent, corrosion inhibitor for cutting oils, drawing compds., lubricating oils, preservative oils Features Blown sperm oil replacement... 

It was concluded that the corrosion of the anodized panel probably resulted from impn r and insufficient cleaning prior to anodizing. The preservation oils used during the various stqis of manufacture and their incomplete removal prior to anodizing were highly suspect... 

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