A large proportion of the products used in the laboratory are used for (or are capable of) producing chemical reactions. The chemical reactions that you may encounter are:

• Chromatographic derivatisation: ilylation, alkylation, esterification
• Reaction assays: acid-base, oxidation-reduction
• Synthesis of organic molecules (drugs, food): nucleophilic addition or substitution, rearrangements
• Exergonic reaction: spontaneous reaction. Exergonic reactions can occur spontaneously as soon as the two reagents are brought into contact. The reaction will thus produce energy (ΔGThe uncontrolled mixing of two reagents of an exergonic reaction may lead to a significant release of energy (explosion, flames, etc.)
  • e. g. reaction between pure sodium and water: https://www.youtube.com/watch?v=3S-C7z-twb4
• Endergonic reaction: an endergonic reaction requires energy to occur (ΔG>0). Therefore, without energy input, the reaction will not occur spontaneously. Caution: the temperature of a laboratory room is sometimes sufficient to provide enough energy for an endergonic reaction, and this reaction may occur, but it will not release energy.

Ammonium Acetate
In the CLP regulation, mandatory labelling is required if a particular reaction involving this chemical product may expose the handler to a health hazard. This additional information may include the following:
• EUH019: May form explosive peroxides
• EUH029: In contact with water, releases toxic gases
• EUH031: In contact with an acid, releases a toxic gas
• EUH032: In contact with an acid, releases a very toxic gas
• EUH206: Caution! Do not use in combination with other products. May release dangerous gases (chlorine)
Organic solvents
Acids and bases
Classification of toxic chemicals