Air, hazards

See entry THERMOCHEMISTRY AND exothermic decomposition (reference 2) It may ignite in moist air. Hazardous properties and handling procedures are summarised [1]. Energy of decomposition (in range 410-460 °C) measured as 0.77 kJ/g [2],... 

Capello et al.16 applied LCA to 26 organic solvents (acetic acid, acetone, acetonitrile, butanol, butyl acetate, cyclohexane, cyclohexanone, diethyl ether, dioxane, dimethylformamide, ethanol, ethyl acetate, ethyl benzene, formaldehyde, formic acid, heptane, hexane, methyl ethyl ketone, methanol, methyl acetate, pentane, n- and isopropanol, tetrahydrofuran, toluene, and xylene). They applied the EHS Excel Tool36 to identify potential hazards resulting from the application of these substances. It was used to assess these compounds with respect to nine effect categories release potential, fire/explosion, reaction/decomposition, acute toxicity, irritation, chronic toxicity, persistency, air hazard, and water hazard. For each effect category, an index between zero and one was calculated, resulting in an overall score between zero and nine for each chemical. Figure 18.12 shows the life cycle model used by Capello et al.16... 

Air (hazardous waste site) (2,3,7,8-TCDD) Collection of sample onto glass fiber filter/polyurethane foam cartridge add [37CI4]2,3,7,8-TCDD and [13C12]2,3,7,8-TCDD Soxhlet extraction with CH2CI2 clean-up with acid/base sequentially on silica gel, modified silica gel, alumina, and carbon HRGC/LRMS No data 0.02 pg/m3 91-112 74-112 Fairless et al. 1987 Harless et al. 1992... 

Properties Reported to form spontaneously from formaldehyde and chloride ions in moist air. Hazard A carcinogen. Toxic by ingestion. TLV 0.001 ppm. 

Properties Colorless or white crystals. Mw 207.93, mp 210C. Soluble in water, alcohol, and very slightly soluble in ether. Hygroscopic in moist air. Hazard Toxic. 

HAZARD RISK Flammable when exposed to heat, flame or oxidizers can react with oxidizing materials may decompose on exposure to water or moist air hazardous decomposition products are carbon monoxide, carbon dioxide and sulfur oxides decomposition emits toxic fumes of SOx NFPA code H 4 F 2 R 0. 

The mechanical engineer will also advise on the necessary duplication of machinery, e.g. continuous duty, maximum short-time duty, standby duty and out-of-service spare machines. He will also give some advice on the proposed method of operation and control of rotating machines, and this may influence the choice of cooling media, construction materials, types of bearings, ducting systems, sources of fresh air, hazardous area suitability, etc. 

Toxicology May cause mild eye and skin irritation, very si. respiratory irritation low ing. hazard in normal use repeated ing. or swallowing Ig. amts, may cause internal injuries TSCA listed Precaution Qddizing material can cause a reaction contact with water, alcohols, acidic/basic materials, and many metals or metallic compds. liberates flamm. hydrogen gas which can form explosive mixts. in air Hazardous Ingredients Alkoxy polyethoxy ethanol (3-7%)... 

Precaution Alkaline material avoid continuous exposure to air Hazardous IngrerSenls Amine functional silicone (100%), octamethylry-dotetrasiloxane (by-prod., trace)... 

Environmental LC50 (rainbow trout) > 1 mg/i toxic to bees Precaution Absorbs moisture readiiy when exposed to air Hazardous Decomp. Prods. Heated to decomp., emits toxic fumes of SO,... 

Toxicology LD50 (IP, mouse) 280 mg/kg poison by IP route human skin irritant ing. can cause nausea and vomiting TSCA listed Precaution Combustible easily oxidized by air Hazardous Decony). Prods. Healed to decomp., emits acrid smoke and irritating fumes Storage Store refrigerated... 

Precaution Flamm. incompat. with strong oxidizing agents, acids, bases may dec. on exposure to moist air or water may dec. under fire conditions to form flamm./explosive mixts. in air Hazardous Decomp. Prods. Toxic fumes of CO, CO2, silicon oxide emits toxic fumes under fire conditions HMIS Health 1, Flammability 2, Reactivity 0 Storage Store in cool, dry place keep tightly closed keep away from heat, open flame... 

Toxicology LD50 (IP, mouse) 600 mg/kg, (oral, mammal) 700 mg/kg irritant to skin, eyes, mucous membranes lachrymator TSCA listed Precaution Combustible corrosive avoid contact with acid absorbs CO2 from air Hazardous Decomp. Prods. Heated to decomp., emits toxic fumes Storage Store under nitrogen Uses Chemicai intermediate for dyes, pharmaceuticals, and polymers corrosion inhibitor for metalworking fluids base-... 

Toxicology ACGIH TLV/7WA 0.1 mg(Co)/m LD50 MP, rat) 754 mg/kg LC50 (inh., rat) 165 mg/m poison by inh., IP routes toxic by ing. questionable carcinogen TSCA listed Precaution Dec. in air to form a prod, that ignites spontaneously in air Hazardous Decomp. Prods. Heated to decomp., emits acrid smoke and fumes Storage Air-sensitive... 

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