Handling precautions

The hazards associated with cyanoacrylate adhesives are primarily due to their rapid, exothermic polymerization and to their ability to bond skin 

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Hexane is classified as a flammable liquid by the ICC, and normal handling precautions for this type of material should be observed. According to the ACGIH, the maximum concentration of hexane vapor in air to which a worker may be exposed without danger of adverse health effects is 125 ppm benzene is rated at 10 ppm. 

Handling Precautions. It is essential that inhalation of vapors and contact with the skin is avoided when handling ethyleneimine. Suitable... 

Health nd Safety Factors. The mononitrochlorobenzenes are toxic substances which may be absorbed through the skin and lungs giving rise to methemoglobin. Their toxicity is about the same as or greater than that of nitrobenzene. The para isomer is less toxic than the ortho isomer, and the maximum allowable concentration that has been adopted for -nitrochlorobenzene is 1 mg/m (0.1 ppm) (6). The mononitrochlorobenzenes are moderate fire hazards when exposed to heat or flame. They ate classified by the ICC as Class-B poisons. The same handling precautions should be used for these compounds as are used for nitrobenzene. 

The petroleum oils are of three basic types aromatic, naphthemic, and paraffinic. Aromatic oils contain hazardous materials that require special handling precautions. Naphthenic oil does not contain hazardous levels of polynuclear aromatics (PNAs) and is less hysteretic. Because of these considerations the naphthenic oil is gaining in usage at the expense of more utilized aromatics. Paraffinic oil is only used modestly in tire compounds. The... 

Occupational Safety and Health. OSHA has set no specific limits for sodium and potassium sibcates (88). A pmdent industrial exposure standard could range from the permissible exposure limit (PEL) for inert or nuisance particulates to the PEL for sodium hydroxide, depending on the rate of dissolution and the concentration of airborne material. Material safety data sheets issued by siUcate producers should be consulted for specific handling precautions, recommended personal protective equipment, and other important safety information. 

Commercial coumarin is packaged ia polyethyleae bags and shipped ia ftberboard dmms. Coumaria is stable ia storage and does not require any special handling precautions. 

Enzyme manufacturers have developed formulations that minimize the release of enzyme dust. In the case of Hquid preparations, handling precautions recommend users to avoid the formation of aerosol sprays. In all cases, direct contact with the skin or eyes should be avoided. Enzymes have a good record of occupational health and safety. 

In the laboratory, a range of slush baths may be used for speciality work. These are prepared by cooling organic liquids to their melting points by the addition of liquid nitrogen. Common examples are given in Table 8.2. Unless strict handling precautions are instituted, it is advisable to replace the more toxic and flammable solvents by safer alternatives. 

The gas is non-flammable, and is used for inert gas purging. Because it is 1.5 times heavier than air it may accumulate at low level. The general handling precautions are those in Table 9.3. 

Before following procedures outlined in this book, readers should refer to the original references for any specific handling practice that may be cited. Material safety data sheets also should be reviewed tor any additional handling precautions. 

General rolling element bearing handling precautions 60/1096... 

Today, in many parts of the world, despite handling precautions and possible health-related problems, it remains the product of choice for high-pressure (say, over 950-1,250 psig) utility boiler plants because of its low FW requirements and low commodity price. 

Platinum is used as a catalyst for nitric and sulphuric acid production, in petroleum refining and in catalytic mufflers to control air pollution. Platinum salts can cause respiratory complaints, asthma, and platinosis , an allergic response. Allergic dermatitis may also result from exposure to soluble platinum salts and once subjects have been sensitized it generally precludes continued occupational exposure at any level. The 8 hr TWA OEL for platinum metal is 5 mg/m but for soluble platinum salts it is only 0.002 mg/m. Handling precautions must include containment where possible, ventilation, personal protection, and the screening out of individuals who have become sensitized. 

The neat material is about three times as shock-sensitive as glyceryl nitrate, and should not be handled undiluted [1]. It exploded during vacuum distillation at 3.3 mbar from a bath at 140°C. Impact- and spark-sensitivities were determined, and autoignition occurred after 30 s at 107°C [2], An explosion occurred during distillation at a pot temperature of 80°C. Full handling precautions are detailed. Dilution of neat material with solvent eliminates shock-sensitivity [3],... 

It reacts vigorously with air and/or water (vapour or liquid) and adequate handling precautions are necessary [1], The finely divided powder is pyrophoric in air [2],... 

It must be handled with care because it may explode or become incandescent on sudden heating or shock. Heating at 207min caused a violent explosion at around 120°C [1]. Preparative and handling precautions have been detailed [2],... 

Christe, K. O. et al., Inorg. Chem., 1987, 26, 920 A shock-sensitive explosive, which needs full handling precautions. 

Hydrogen sulfide is removed from natural gas by passage over iron sponge, when flammable iron sulfide is produced. Handling precautions during regeneration of the reactor beds are detailed. 

Although it is not an oxidant, it is an active acid which, because of its low equivalent wt. and availability in high concentration and density (90% soln. is 50 n), can develop a large exotherm on neutralisation. Handling precautions are detailed. 

Finely divided palladium (palladium-black) used as a hydrogenation catalyst is usually pyrophoric and needs appropriate handling precautions. 

Since halcinonide is a corticosteroid, large doses of unformulated steroid are needed systemically before the unwanted side effects appear. Halcinonide is usually formulated at concentrations of 0.1%, or less. Normal handling precautions are adequate. 

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