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 ...

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 ...

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 is readily soluble in acetone, cyclohexanone, ...

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

Methanol is a colourless, polar, volatile, flammable liquid with a mild alcoholic odour when pure. It decomposes on heating producing carbon monoxide and formaldehyde. Methanol reacts violently with oxidizing materials ...

White spirit is a mixture of saturated aliphatic and alicyclic C7 to C2 hydrocarbons with a maximum content of 25% of C7 to C 12 alkyl aromatic hydrocarbons.

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.

This is a companion volume to Environmental Health Criteria 82: Cypermethrin. The Environmental Health Criteria (EHC) documents produced by the International Programme on Chemical Safety include an assessment of the effects ...

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

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 recognition. 1,2-Dichiorethane is a volatile and ...