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ether, and organic solvents; stable in acidic solutions, decomposes in alkaline solution. Derivation: Isolation from muscte tissue; yeast phos- horylation of adenosine. se: Biochemical research. Commercially available as the disodium, dipotassium, and dibarium saits. adenylic acid (adenosine monophosphate; AA; adenosine phosphate: i ic acid; AMP) CioH). S:OrP. The monophosphonc ester of adeno- sine; 1..., the nucleotide containing adenine, D-ribose and phosphoric acid. Adenylic acid is a constituent of many important coenzymes. Cyclic adenosine-3',5’,- monophosphate is designated by biochemisis as cAMP (q.¥.). Properties (muscle adenylic acid): Crystalline solid, m.p. 196-200°C. Readily soluble in boiling water. Gives only traces of furfural when boiled with 20% hydrochloric acid. (yeast adenylic acid monohydrate): Long crystalline rods. Decomposes 195°C. Anhydrous form decom- poses at 208°C. Almost insoluble in cold water, siohele Juhle it as 1 3! itetl slightly soluble in boiling water. Gives quantitative yield of furfural when distilled with 20% HCI. Derivation: Yeast adenylic acid by precipitation from yeast nucleic acid. Muscle adenylic acid by precipita- tion from tissues; by hydrolysis of ATP with barium hydroxide; by enzymatic phosphorylation of adenosine. Uses: Medicine and biochemical research. adhesion. The state in which two surfaces are held to- gether by interacial forces, which may consist of valence forces or interlocking action, or both. (ASTM) i | sour taste. Soluble in water, insoluble in alcohol, adenosinephosphoric ecenes ER ne adhesive. Any sudstancs, inorganic or organic, natural or synthetic, that is capable of bonding other sub- nt. A brief ctanrec taeet efone stench SritT | " siances together by surface attac classification by type is as follows: i. Inorganic . Soluble silicates (water glass) . Phosphate cements . Portland cement {calcium oxide-silica) . Other hydraulic cements (mortar. gypsum) . Ceramic (silica-boric acid) . Thermosetting powdered glasses (“Pyroceram”) Tl. Organic 1. Natural (a) Animal Hide and bone glue; fish glue Blood and casein glues [ Aun & Gh Soybean, starch, cellulosics, rubber tatex and rubber-solvent (pressure-sensitive). Gums, terpene resins (rosin), mucilages (c} Mineral Asphalt, pitches, hydrocarbon resins 2. Synthetic {a) Elastomer-solvent cements (b) Polysulfide sealants (c) Thermoplastic resins (for hot-meits) Polyethylene, isobutylene, — polyamides, olyvinyl acetate hermosetting resins Epoxy, phenolformaldehyde, butyral, cyanoacrylates. {ec} Silicone polymers and cements See also following entries. For further information refer potevinyl t i Superior numbers refer to Manufacturers of Trade Mark Products. For page number see Contents. s ies ot me ak a, 1 rane adhesive, high-temperature. (1} Organic polymers, e.g.. . polybenzimidazoles, that retain bonding strength upto adhesive, hot-melt. A solid, thermoplastic material which adhesive, rubber-based (cement, rubber). (1) A solution adiabatic. A process, condition, or operation during adipic acid (hexanediow acid; 1,4-butanedicarboxylic “Adipol."5 ete te ee ge ee Sanh a, a Sieh s eae Saaipect ne: ES : wah DP ate ey “ADIPOL”™ to Adhesives Manufacturers Association, 44] Lexing- ton Ave., New York. F for a relatively Jong time (500-1000 hours): above 500°F, strength drops rapidly, 80% being tost after 10 minutes at 1000°F. (2) Inorganic (ceramic), ¢.g., silica-boric acid mix- tures or cermets produce bonds having high strength above 2000°F: adhesive Jap-bond strengths can be over 2000 psi'at JO00°F. These adhesives are used largely for aerospace service, and metai/metal and giass/ metal seals, quickly melts upon heating, and then sets to a firm bond on cooling. Most other types of adhesives set by evaporation of solvent, Hot-melt types offer the pos- sibility of almost instantaneous bonding, making them well-suited to automated operation. In general, they are low-cost, low-strength products, but are entirely adequate for bonding cellulosic materials. Ingredients of hot-melts are pofyethylene, polyvinyl acetate, polyamides, hydrocarbon resins, as well as natura! asphalts, bitumens, resinous materials, and waxes. Uses: Rapid and efficient bonding of low-strength materials, ¢.g., bookbinding, food cartons, side- seaming of cans, miscellaneous packaging applica- tions. Sec also sealant. of natural or synthetic rubber in a suitable organic solvent, without sulfur or other curing agent: (2)a mix- ture of rubber (often reclaimed), filler, and tackifier (pine tar, liquid asphalt} applied to fabric backing (pressure-sensitive friction tape); (3) a soom- temperature curing rubber-solvent-curative mixture, often made up in two parts, which are biended just before use; (4) rubber Jatex, especially for on-the-job repairing, such as conveyor belts; (5) silicone rubber cement (see “RTV” and silicone (uses). Hazard: Those containing organic solvents, (1) and (3) above, are Nammable. Shipping Regulations: Cement, Jiquid,n.0.s., (Rail) Red label. (Air} Flammable Liquid label. which there is no gain or loss of heat from the en- vironment. .* acid) COOH(CH,),COOH. Properties: White, crystalline solid. M.p. 152°C; b.p. (160 mm) 265°C; sp. gr. (20/4°C) 1.360; flash point (closed cup) 385° F. Shightly soluble in water, soluble in alcohol and acetone. Relatively stable. Combustible; low toxicity. Derivation: Oxidation of cyclohexane, cyclohexanol, or cyclohexanone with air of nitric acid. Grades: Technical; F.C.C. Containers: Glass bottles; tins; 50-Ib multiwall paper bags, drums. Uses: Manvfacwwre of nylon and of polyurethane foams; preparation of esters for use as plasticizers and lubricants; food additive (neutralizer and flavoring agent}, adhesives. Trademark for 1.” a sertes of adipate plasticizers. . eS “f: 2 Peer : md RISES gE ore tae