|Hazardous materials description and proper shipping names||Haz class or div||ID#||PG||LC||Spec prov §172.102||Pack §173||Qty limit||Vessel|
|Excep||Non Bulk||Bulk||Pass air/rail||Cargo air only||Loc||Other|
|Current as of Oct. 6, 2011|
|+||Sulfur trioxide, stabilized||8||UN1829||I||8, 6.1||2, B9, B14, B32, B49, B74, B77, N34, T20, TP4, TP12, TP13, TP25, TP26, TP38, TP45||None||227||244||Forbid||Forbid||A||40|
|Sulfuric anhydride, see Sulfur trioxide, stabilized||Forbid||Forbid|
Produced by the US DOT the ERG is designed to aid first responders in quickly identifying specific or generic hazards of materials involved in an incident and protecting themselves and the general public during the initial response phase of an incident.
|UN#||Guide||Name of Material||ISO||H20 React||TIH Gas(es)|
|Current as of: Oct. 2, 2011|
|1829||137||Sulfur trioxide, stabilized||Yes||No|
|1829||137||Sulfur trioxide, uninhibited||Yes||No|
|1829||137||Sulphur trioxide, uninhibited||Yes||No|
|Isolation and Protective Action Distances Table|
|SMALL SPILLS||LARGE SPILLS|
|UN#||Name of Material||First ISOLATE in all Directions||Then PROTECT Persons Downwind During-||First ISOLATE in all Directions||Then PROTECT Persons Downwind During-|
Current as of: Oct. 2, 2011
|1829||Sulfur trioxide, stabilized||60||200||0.4||0.2||1||0.6||300||1000||2.9||1.8||5.7||3.6|
|1829||Sulfur trioxide, uninhibited||60||200||0.4||0.2||1||0.6||300||1000||2.9||1.8||5.7||3.6|
|1829||Sulphur trioxide, uninhibited||60||200||0.4||0.2||1||0.6||300||1000||2.9||1.8||5.7||3.6|
Editor's note: Some chemicals in this database contain more information than others due to the original reason this information was collected and how the compilation was accomplished.
While working with material safety data sheets (MSDS), I found that manufacturers sometimes used obscure names for constituent chemicals and I didn't always have a good idea of what I was dealing with. To resolve this problem, over the years, I compiled chemical names and identifiers into a personal database, cross referencing regulatory and health safety information when possible. Colleagues and friends eventually started suggesting that I make my data available on this website so that others could benefit from my efforts -- which I finally did in 2004. The more common, regulated and/or hazardous a chemical is, the more information I will have likely collected it.
If you are aware of any synonyms listed above that are registered trademarks, please contact us with relevant information so that trademarks can be appropriately noted.
Some chemicals listed in this database or not pure chemical compounds, rather they are mixtures/solutions of chemicals. It is not uncommon for wide range of molar ratios of a mixture to be lumped together as "synonyms" of the same "chemical". In some instances chemicals that are very similar from a health & safety and/or regulatory standpoint also may have been lumped together.
Data for this database was compiled from: hundreds of Material Safety Data Sheets (MSDS) of common industrial and household products; the Hazardous Materials Table from the United States "Code of Federal Regulations" title 49 section 172.101; the National Institute for Occupational Safety and Health Pocket Guide to Chemical Hazards; the US DOT 1996, 2000 & 2004 Emergency Response Guidebooks; U.S. National Library of Medicine and many other related resources.
WARNING: These pages are for general reference and educational purposes only and MUST NOT be relied upon as a sole source to determine regulatory compliance or where matters of life and health are concerned. This site and the author do not warrant or guarantee the accuracy or the sufficiency of the information provided and do not assume any responsibility for its use.
To ensure regulatory compliance when transporting hazardous materials or dangerous goods, one must receive proper training and certification from a qualified instructor and refer to the current year's Code of Federal Regulations Title 49 (49CFR) or your country's shipping regulations. In matters regarding workplace safety, refer to current OSHA regulations (29CFR) and NIOSH guidelines or your own country's health and safety regulations. No one should ever enter into a hazardous environment without proper training from qualified instructors.
If you need to cite this page, you can copy this text:
Kenneth Barbalace. Chemical Database - Sulfur trioxide. EnvironmentalChemistry.com. 1995 - 2023. Accessed on-line: 2/8/2023