Chemicals have become an indispensable part of human life, sustaining activities and development, preventing and controlling many diseases, and increasing agricultural productivity. Despite their benefits, chemicals may, ...

Brodifacoum is an off-white powder, which is stable in the solid form. Its solubility in water is very low (less than 10 mg/litre at 20 °C and pH 7); it is slightly soluble in benzene and soluble in acetone.

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 chloride). Depending on the reaction conditions, the ...

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 conditions. Solubility in organic solvents: ...

Beryllium is a steel-grey, brittle metal, existing naturally only as the 9Be isotope. Its compounds are divalent. Beryllium has several unique properties. It is the lightest of all solid and chemically-stable substances, ...

Aldicarb has a slight sulfur smell. It has a melting point of 100 °C and a specific gravity of 1.195 at 25 °C. it is soluble in water, sensitive to heat, and relatively unstable. Analytical methods for aldicarb include ...

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 partition and purification by column chromatography. ...

Commercial 1,3-dichioropropene is a mixture of cis- and trans- isomers and 92% pure. It may also be used in admixtures with 1 ,2-dibromoethane (Dorloe) or with 1 ,2dichloropropane (D-D , soil fumigant; Nemex Telone , and ...

Acrylic acid is a colourless liquid with an irritating acrid odour at room temperature and pressure. Its odour threshold is low (0.20-3.14 mg/rn3). It is miscible in water and most organic solvents.

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 arsenates, by atmospheric oxygen. Arsenic trisulfide ...