Cement, flammable

Adhesives, containing a flammable liquid, 3, 3.1, 3.2, 3.3 mable liquid, 3 Cement, flammable Cement, liquid ... 

Searching a crime scene is a complex process (25), involving poHce, crime scene technicians, and forensic scientists. The procedure requires careful documentation, collection, and preservation of the evidence. Trace evidence (26) in criminal investigations typically consists of hairs (27,28) both natural and synthetic fibers (qv) (29,30), fabrics glass (qv) (31,32) plastics (33) sod plant material budding material such as cement (qv), paint (qv), stucco, wood (qv), etc (34), flammable fluid residues (35,36), eg, in arson investigations explosive residues, eg, from bombings (37,38) (see Explosives and propellents), and so on. 

Phenolic-neoprene contact cements are used for structural metal-metal bonding. especially where fatigue resistance and low temperature performance are important [209]. They are also used for bonding textiles, wood, rubbers, plastics, ceramics, and glass to metal and to one another. Solvent toxicity and flammability has greatly reduced the use of contact cements in the wood products industry. Water-based contact cements persist, but generally do not perform as well as the solvent systems, thus allowing market erosion by alternative binders. 

Chemical Reactivity - Reactivity with Water Dissolves and forms a weak solution of hydrofluoric acid Reactivity with Common Materials In presence of moisture will corrode glass, cement and most metals. Flammable hydrogen gas may collect in enclosed spaces Stability During Transport Stable Neutralizing Agents for Acids and Caustics Flush with water, rinse with dilute solution of sodium of sodium bicarbonate or soda ash Polymerization Not pertinent Inhibitor of Polymerization Not pertinent. 

At this moment, the price of the used granular PCM exceeds 10 EURO/kg due to the test production stage. Our calculation showed the cost payback time can be less than 10 years when the PCM cost would be reduced to 4 EURO/kg under the electrical utility rate condition in Japan. Further cost reduction will be needed to promote the actual system. In addition we have to care of flammability of paraffin wax as PCM in use of inside the buildings. Fortunately, PCM is placed under the OA floor board made of fireproof cement-mortal and above the concrete slab in this system. It may not have any problems under the Fire Defense Law in Japan. However, further development of noninflammable PCM granules, for example micro encapsulation of mixture of inorganic and organic PCM, is required. 

Reactivity with Common Materials — This is limited to hazardous reactions with fuels and with common materials of construction such as metal, wood, plastics, cement, and glass. The nature of the hazard, such as severe corrosion or formation of a flammable gas, is described for specific chemicals in Chapter 4. 

The most common metal swarfs are iron-based [9,10] and produced by the machine tool and automobile industries. The resulting fine Fe particles oxidize in storage and form magnetite and hematite. Because they also contain flammable machine oils, this oxidation makes them pyrophoric and hence a liability. Because the particle surfaces are coated with oil, they cannot be incorporated in conventional cement. As demonstrated by Wagh and Jeong [3], the acid phosphate in the CBPC process acts like a detergent and exposes the surface of these particles to the acid-base reaction and binds them. 

Flammability of materials is characterized by many different ways, one of them is the flame spread index (FSI). As reference values, FSI for inorganic reinforced cement board surface is arbitrarily set as 0, and for select grade oak surface as 100 under the specified conditions. FSI for ordinary wood species is typically between 100 and 200, and for some special cases it is as low as 60-70. An average FSI for about 30 different wood species is 125 45. 

ACID AMMONIUM FLUORIDE (1341-49-7) FiH H4N Reacts with water, forming a weak solution of hydrofluoric acid. Violent reaction with bases, releasing ammonia gas. Attacks glass, cement, and most metals in the presence of moisture. Upon contact with moisture and metal, this material may release flammable hydrogen gas which may collect in enclosed spaces. Do not use aluminum, nickel, or steel containers. When heated to decomposition, emits toxic and corrosive fumes of ammonia, hydrogen fluoride, and nitric oxides. 

ACID AMMONIUM FLUORIDE (1341-49-7) Reacts with water, forming a weak solution of hydrofluoric acid. Incompatible with alkalis, acids. Attacks glass, cement, and most metals in the presence of moisture. Flammable hydrogen gas may collect in enclosed spaces. 

Another case which involved a general warning which failed to take proper account of all aspects of a product s vapors was Tucson Industries, Inc. v. Schwartz. " In this case, the plaintiffs eyes were severely damaged and partially blinded by fumes from a cement being used to bond tops onto tables in a room adjacent to the plaintiffs office. The cement had been labeled to warn of its flammability and the toxicity of its vapors. The harmful fumes reached the plaintiff by traveling through air conditioning ducts. 

SPILL CLEAN-UP absorb bulk liquid with fly ash or cement powder neutralize with caustic soda or soda ash dilute spills to form non-flammable mixtures and isolate discharged material for proper disposal. 

Coating Solution, Material such as automobile undercoating, drum or barrel lining material, etc., which cannot properly be described as cement, but presents similar hazards during transport. It usually contains flammable solvents. ICAO A2... 

Plastic Solvent n.o.s. A name commonly used for mixtures of liquids employed for dissolving plastics or for thinning plastic cements. In general, they may contain flammable liquids, such as acetone, amyl acetate, or some of the alcohols or ketones. The classification is determined by the flash point. ICAO A2... 

Cellulose nitrates with DS values of 1.8-2.3 are used in plastics, lacquers, coatings, and adhesives. The most common use as an adhesive is as general-purpose household cement, in which the nitrate and a plasticizer are dissolved in a mixed ketone-ester organic solvent. Upon application to the substrate, the solution rapidly loses solvent to form tough, moisture-resistant, clear films. These thermoplastic films are prone to discoloration upon exposure to sunlight, and, as might be expected, are very flammable. 

---