butadiene

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butadiene

A conjugated diene gas released during the production of synthetic rubber and adiponitrile, an intermediate in nylon production. Short-term exposure causes irritation of mucous membranes, blurred vision, fatigue, headache and dizziness. Long-term exposure to 1+ ppm is cardiotoxic, and increases the risk of leukaemia and other cancer.
References in periodicals archive ?
1,3-Butadiene exposure was associated with a higher RR for AML compared with ALL, but the summary estimates were statistically unstable, being based on two studies only.
FTIR analyzer is capable of measuring 24 unregulated emission pollutants such as carbon monoxide (CO), carbon dioxide (CO2), nitric oxide (NO), nitrogen dioxide (NO2), nitrous oxide (N2O), water (H2O), ammonia (NH3), sulfur dioxide (SO2), formaldehyde (HCHO), acetaldehyde (CH3CHO), formic acid (HCOOH), acetic acid (CH3COOH), methanol (CH3OH), ethanol (C2H5OH), methane (CH4), Acetylene (C2H2), ethylene (C2H4), ethane (C2H6), propene (C3H6), propane (C3H8), 1,3-Butadiene (C4H6), iso-butene (C4H8), benzene (C6H6), toluene (C7H8) etc.
The proportion of 1,3-butadiene in the exhaust gas Generator Alkylate Petrol_ load, W petrol Addinol Oil 100W 8.64 13.40 200W 6.54 9.60 300W 6.91 7.03 Note: Table made from bar graph
In addition, it should be noted that 1,3-butadiene emissions are totally attributed to gasoline vehicles, while PM2.5 is mainly related with diesel engines.
1, [a.sub.0] is the independent term, [x.sub.i] represents the independent polymerization variables (DEAC/Nd ratio, reaction temperature, catalyst concentration, and 1,3-butadiene concentration), [y.sub.k] represents model responses (catalyst activity, molecular weight averages, and PDI), and [a.sub.i] and [a.sub.ij] are model parameters (variable effects).
Henry's law constants and infintite dilution activity coefficients of propane, propene, butane, 2-methylpropane, 1-butene, 2-methylpropene, trans-2-butene, cis-2-butene, 1,3-butadiene, dimethyl ether, chloroethane, and 1,1-difluoroethane in 2-propen-l-ol.
The carcinogenicity of 1,3-butadiene is mediated through the creation of highly reactive epoxide intermediates formed during 1,3-butadiene metabolism, which damage DNA through the formation of DNA adducts (Goggin et al.
"Any release of carcinogens (like benzene, 1,3-butadiene) adds to the increased cancer risk for those living near these plants," Metzger said in an email.
Evaporative emissions of 1,3-butadiene from petrolfuelled motor vehicles, Atmospheric Environment 32(14 15): 2685-2692.
To get an idea on the propagation rate of the polymerization of 1,3-butadiene with A1/Li/Ba/cyclohexane solutions a series of polymerizations was carried out by keeping constant the catalyst composition (1:1:0.25 of Al: Li: Ba molar ratio) and changing the polymerization temperature (40-80[degrees]C).
Researchers also found similar levels of toxic compounds such as benzene, 1,3-butadiene, ethyl benzene, toluene, xylene, and MTBE, all considered toxic by ARB and the U.S.
(a).undergoes vigorous polymerization, decomposition, or condensation; e.g., styrene, 1,3-butadiene and acetylene.

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