161 datasets found

Rotenone is a naturally occurring chemical with insecticidal and piscicidal properties obtained from the roots of several tropical and subtropical plant species belonging to...

Trimellitic anhydride is a white solid in the firm of flakes. It is readily hydrolysed in water to trimellitic acid, which is moderately soluble in water. Trimellitic anhydride...

Arsenic compounds are often unstable, and in many cases are not well defined materials. For example, the arsenites of the alkali metals are slowly converted in solution to...

The PCBs are chlorinated hydrocarbons that are manufactured commercially by the progressive chlorination of biphenyl in the presence of a suitable catalyst (e.g., iron...

Trichlorfon is a colourless crystalline powder that is stable at room temperature. It is slowly hydrolysed in acid media; the half-life is 526 days at pH 1-5 and 20°C. In...

Isobenzan is a whitish to light-brown crystalline powder, with a mild chemical odour. It is relatively stable to acids, but liable to dehydrochlorination under strongly alkaline...

MIBK is a clear liquid with a sweet odour; the odour threshold is 1.64 mg/m3 (0.4 ppm). It is moderately soluble in water. MIBK can react violently with oxidizing and reducing...

Formaldehyde is a flammable, colourless, reactive, and readily polymerized gas at normal temperature and pressure. The heat of combustion for formaldehyde gas is 4.47 kcal/g. It...

Anhydrous hydrazine, and aqueous solutions, are colourless liquids. Anhydrous hydrazine is a caustic, fuming, hygroscopic liquid at normal temperature and pressure. It has an...

1,2-Dichioroethane is a colourless liquid, with a sweet taste aid a chloroform-like odour. Reportd odour thresholds are 25-450 mg/ni for perception and 162-750 mg/rn for...

Lindane is a white, crystalline solid, with a weak, or no, odour (the characteristic smell of technical HCH is attributed to the impurities, particularly...

a- and 13-HCH can be determined separately from the other isomers, by gas chromatography with electron-capture detection, and other methods, after extraction by liquid/liquid...

Pure paraquat salts are white and the technical products, yellow. They are crystalline, odourless, hygroscopic powders. Paraqual is slightly soluble in alcohol and practically...

Technical captafol is a light tan powder with a characteristic odour. It is stable at room temperature in the dry state, but is readily bydrolysed, especially in an alkaline...

UN Environment’s sixth Global Environment Outlook (2019) calls on decision makers to take immediate action to address pressing environmental issues to achieve the Sustainable...

Barium is an alkaline earth metal that occurs in nature in a combined form. It is present in rocks, minerals, soils, air, natural waters, and fossil fuels. Some barium salts...

Dimethylformamide (DMF) is a colourless liquid with only a slight, unpleasant odour; smell is, therefore, not a useful warning signal. DMF is usually stable but, when it comes...

Mirex is a white crystalline, odourless solid with a melting point of 485 °C. It is soluble in several organic solvents including tetrahydrofuran (30%), carbon disulfide (18%),...

Ammonia is a colourless acrid-smelling gas at room temperature and normal atmospheric pressure. Most people can identify its odour at 35 mg/rn3 in air. It can be stored and...

The extent to which human somatic and germinal mutation frequencies may be increased by exposure to ionizing radiation and to the variety of chemicals that characterize modern...