Precautionary statements form part of the Globally Harmonized System of Classification and Labelling of Chemicals (GHS).
[1] They are intended to form a set of standardized phrases giving advice about the correct handling of chemical substances and mixtures, which can be translated into different languages.
[2][3] As such, they serve the same purpose as the well-known S-phrases, which they are intended to replace.
Precautionary statements are one of the key elements for the labelling of containers under the GHS, along with:[4] Each precautionary statement is designated a code, starting with the letter P and followed by three digits.
The code is used for reference purposes, for example to help with translations, but it is the actual phrase which should appear on labels and safety data sheets.