Risk and Safety Statements
- Risk and Safety Statements
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 R/S statement of a compound consists of a risk part (R) and a safety part (S), each followed by a combination of numbers. Each number corresponds to a phrase. The phrase corresponding to the letter/number combination has the same meaning in different languages—see 'in other languages' on the left.
Example
The R/S statement code for fuming hydrochloric acid (37%):: R: 34-37 S: 26-36-45.
The corresponding English language phrases:: Risks:: R: 34 "Causes burns":: R: 37 "Irritating to the respiratory system.": Safety:: S: 26 "In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.":: S: 36 "Wear suitable protective clothing.":: S: 45 "In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)."
Dashes separate the phrase numbers. They are not to be confused with range indicators.: Example: R: 34-37 "Causes burns, irritating to the respiratory system."Slashes indicate fixed combinations of single phrases.: Example: R: 36/37/38 "Irritating to eyes, respiratory system and skin."More detailed hazard and safety information can be found in the material safety data sheets (MSDS) of a compound.
See also
*MSDS
*List of R-phrases
*List of S-phrases
External links
* [http://schoolscout24.de/cgi-bin/rsp/rspinput.cgi Chemical Risk & Safety Phrases in 22 European Languages]
* [http://sigmaaldrich.com/Help_Pages/Help_Welcome/Product_Search/Risk___Safety_Statements.html#Risk%20Phrases List of R/S statements at Sigma-Aldrich]
* [http://www.nohsc.gov.au/applications/hsis/HSGuidance.htm#risk Australian hazardous substances information system]
* [http://europa.eu.int/eur-lex/pri/en/oj/dat/2001/l_225/l_22520010821en00010333.pdf European Union commission directive 2001/59/EC] (PDF)
* [http://ecb.jrc.it/classification-labelling/ European Chemical Bureau Classification and Labelling Homepage]
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