Risk and Safety Statements, also known as R/S statements, R/S numbers, R/S phrases, and R/S sentences, is a system of hazard codes and phrases for labeling dangerous chemicals and compounds.
The phrase corresponding to the letter/number combination has the same meaning in different languages—see 'languages' in the menu on the left.
In 2015, the risk and safety statements were replaced by hazard statements and precautionary statements in the course of harmonising classification, labelling and packaging of chemicals by introduction of the UN Globally Harmonized System of Classification and Labelling of Chemicals (GHS).
The R/S statement code for fuming hydrochloric acid (37%): The corresponding English language phrases: Dashes separate the phrase numbers.
Slashes indicate fixed combinations of single phrases.