Hazards combustible vapors

Perimeter Monitoring - The perimeter of a hazardous area or process unit can be effectively monitored for vapor release by IR beam arrangements on the edges. Theoretically they could be used to warn of open air combustible vapors approaching ignition sources in a reverse role, e.g., to the flare from the process area. 

Attention also must be given to the explosion and fire hazards presented by combustible organic vapors and combustible gases such as hydrogen and methane. These vapors are readily ignited by static electricity, electrical sparks from most laboratory appliances, open flames, and other highly exothermic reactions. Thus appreciable atmospheric concentrations of combustible vapors should be avoided. 

The obvious hazards in the syntheses reported in this volume are delineated, where appropriate, in the experimental procedure. It is impossible, however, to foresee every eventuality, such as a new biological effect of a common laboratory reagent. As a consequence, all chemicals used and all reactions described in this volume should be viewed as potentially hazardous. Care should be taken to avoid inhalation or other physical contact with all reagents and solvents used in this volume. In addition, particular attention should be paid to avoiding sparks, open flames, or other potential sources that could set fire to combustible vapors or gases. 

While foam has traditionally been effective in the suppression of flammable and combustible liquid fires, its benefit as a suppressant of hazardous material vapors should not be underestimated. When used on spilled... 

Generation of combustible vapors is a hazard not only for the storage of pure flammable liquids but also for the storage of any sludge or mixture where a combustible component is present or can be produced by reaction. Sludge (slop tanks) and mixture (e.g., oil/water) tanks may be particularly vulnerable because they are sometimes open to the air explosive atmospheres may form inside and outside the tank. Facilities may not always recognize the hazard. In addition, even tanks appearing to be empty may pose a hazard if they still contain combustible vapors. 

HAZARD RISK Flammable and combustible when exposed to heat or flame 2-ethoxyethanol a moderate explosion hazard in vapor form 2-ethoxyethanol forms explosive dry mixture with hydrogen peroxide, polyacrylic amide gel and toluene NFPA Code 2-ethoxyethanol H 2 F 2 R 0 2-methoxyethanol H 2 F 2 R 0. 

EXPLOSION and FIRE CONCERNS flammable gas dangerous fire hazard NFPA rating Health 2, Flammability 4, Reactivity 2 may form explosive peroxides upon exposure to air autopolymerizes in the presence of sodium forms carbon monoxide and carbon dioxide upon combustion vapor may travel considerable distance to source of ignition and flash back explodes on contact with aluminum tetrahydroborate incompatible with strong oxidizers, halogens, oxygens, and copper alloys use water as fog or spray, dry chemical or carbon dioxide for firefighting purposes. 

EXPLOSION and FIRE CONCERNS flammable liquid NFPA rating Health 1, Flammability 3, Reactivity 0 volatile vapors may travel considerable distance to source of ignition and flashback vapor may explode if ignited in a confined area incompatible with nitrates, strong oxidizers, strong alkalies and acids decomposition liberates toxic fumes hazardous combustion or decomposition products include carbon monoxide and carbon dioxide use carbon dioxide, dry chemical powder, and alcohol-resistant foam for firefighting purposes. 

Properties Yel. liq. amine-like odor sp.gr. 1.00 g/cc dens. 8.21-8.34 Ih/ gal vapor pressure 5 mm Hg flash pt. (Seta) 28 C cationic 44-46% NV Toxicology May aggravate some skin and asthma-like conditions and pre-existing liver and/or kidney disorders TSCA listed Precaution Flamm. tiamm. limits 1.2-12.0% vol. in air eliminate all sources of ignition keep away from strong oxidizing materiais Hazardous Decomp. Prods. Hazardous combustion prods. CO, CO2, NO,... 

Environmental Environmentally hazardous EC50 (daphnia magna, 48 h) 7.4 mg/l, toxic LC50 (fathead minnow, 96 h) 4.2-30 mg/l, harmful to toxic toxic to algae marine pollutant Precaution Combustible vapor and liq. incompat. with strong oxidizing... 

Precaution Combustible reacts with oxidizing materials incompat. with acids (can hydrolyze to form acetic acid and alcohol), bases (can hydrolyze to form acetate salt and alcohol) mod. explosion hazard as vapor when heated... 

Toxicoiogy LD50 (oral, mouse) 2500 mg/kg, (subcut., mouse) 2500 mg/ kg, (IV, mouse) 600 mg/kg, (skin, rabbit) > 5 g/kg mod. toxic by IP, subcut., IV routes low toxicity by ing. and skin contact TSCA listed Precaution Flamm. or combustible can react with oxidizers si. explosion hazard in vapor form exposed to flame Hazardous Decomp. Prods. Heated to decomp., emits acrid smoke and irritating fumes... 

Precaution Flamm. or combustible liq. si. explosion hazard in vapor form... 

Precaution Combustible reacts with oxidizing materials incompat. with acids (can hydrolyze to form acetic acid and alcohol), bases (can hydrolyze to form acetate salt and alcohol) mod. explosion hazard as vapor when heated Hazardous Decomp. Prods. Heated to decomp., emits acrid smoke and irritating fumes NFPA Health 2, Flammability 2, Reactivity 0 Storage Store in cool, dry, well-ventilated area, out of direct sunlight use in minimal quantities avoid generating mist... 

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