Nitrogen monoxide (Nitric oxide) (NO)

A colourless, heavier-than-air gas, an intermediate in the production of nitric acid.

Methanol (methyl alcohol) (CH₃OH)

The simplest saturated alcohol. A highly toxic compound, easily confusable with ethanol.

Methane (CH₄)

The first member in the homologous series of alkanes.

Hydrogen-fluoride (HF)

One of the hydrogen halides, a highly aggressive substance - it even attacks glass.

Iodine (I₂)

A solid, grey substance which sublimates when heated. Its solution in alcohol is called tincture of iodine, it is a disinfectant.

Naphtalene (C₁₀H₈)

The simplest polycyclic aromatic hydrocarbon.

Trimethylamine N(CH₃)₃

A tertiary amine with a characteristic unpleasant odour, occurring in spoiled food.

Benzene (C₆H₆)

Benzene is the simplest aromatic hydrocarbon.

Sulphate ion (SO₄²⁻)

A compound ion produced when sulphuric acid releases protons.

Palmitic acid (hexadecanoic acid) (C₁₅H₃₁COOH)

A white, waxy substance, a carboxylic acid of high carbon number.

Imidazole (C₃H₄N₂)

A biologically and practically important organic compound.

Chloromethane (methyl-chloride) (CH₃Cl)

Chloromethane can be prepared by heating a mixture of methane and chlorine.

Ethyl acetate (C₄H₈O₂)

One of the most important esters, produced by the reaction of ethanol and acetic acid.

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