Thursday, December 4, 2014

Pyridine and its homologs. Clinical human exposure studies have provided some information on the py


Acids Inorganic adk acids and anhydrides alcohols aldehydes adk and ketals ORGANIC AMINES AMIDES AZIDES AROMATIC COMPOUNDS aliphatic amines BORON COMPOUNDS CIANO epoxy compounds Heterocyclic Compounds ESTERS adk - ACRYLIC ESTERS ESTERS ACETATES alkanoates (EXCEPT ACETATES) glycerol ethers and glycol ethers fluorocarbons GLYCOLS HALOGEN COMPOUNDS AND THEIR OIL ALIPHATICS adk SATURATED HYDROCARBONS AND halogenated alicyclic ALKALINE MATERIALS AND MEASURES OF HEALTH adk AND SAFETY adk RISKS USES
Pyridine and its homologs. Clinical human exposure studies have provided some information on the pyridine, mainly related to medical treatment or exposure to vapors. The pyridine is absorbed from the digestive tract, skin or respiratory irritation. Clinical symptoms of poisoning include gastrointestinal disturbances, diarrhea, abdominal pain and nausea, weakness, headache, insomnia and nervousness. Exposure to concentrations below those required to produce overt clinical adk signs can cause liver damage in varying degrees, with severe degeneration of the central lobe, congestion and cellular infiltration. Repeated exposures to low concentrations of pyridine cause cirrhosis. The kidney appears to be less sensitive than liver damage induced by this substance. Generally, the pyridines and their derivatives produce local irritation when in contact adk with skin, mucous membranes and cornea. Liver lesions at concentrations adk too small to elicit a response adk of the nervous system may result from exposure tions, so that not always exposed workers may note the presence of this substance. Furthermore, although the smell of pyridine is easily detected at concentrations below 1 ppm vapor can not rely on the sense of smell because it quickly numbed. Pyridine in liquid and gaseous state carries a serious risk of fire and explosion when exposed to flames; You can also react violently with oxidizing adk agents. If heated to decomposition, cyanide adk off vapors.
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2014 (269) November (3) October (29) September (20) Risks The n-hexane (II) Risks The n-hexane adk (I) Irrigation Irrigation adk of Hexane n-Hexane Octane Risks Risks Risks of Heptane adk Pentane Health Risks SATURATED HYDROCARBONS AND ... Fire and Explosion Hazards OIL SATURA ... use of hexane Uses Isooctane Uses Uses Isobutane Liquefied petroleum gas Uses saturated hydrocarbons SATURATED HYDROCARBONS and alicyclic health and safety measures ... Heterocycl adk Compounds Risks Vinylpyridine. Risks The risks quinoline The pyrrole and pyrrolidine Risk Pyridine and its counterparts adk August adk (30) July (28) June (28) May (31) April (29) March (17) February ( 27) January (27) 2013 (197) December (28) November (40) October (60) September (61) August adk (8)


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