WHMIS (Sodium hydrosulfite)

Workplace Hazardous Materials Information System

WHMIS 2015 classification - Note to reader

• Self-heating substances and mixtures - Category 11

• Combustible dusts - See comments below2 3 4 5

• Acute toxicity - inhalation - Category 35 6

• Serious eye damage/eye irritation - Category 2B7 8

Danger

Self-heating; may catch fire (H251)
On contact with water releases gases which are toxic if inhaled: Sulfur dioxide
Causes eye irritation (H320)

Ingredient disclosure

Comments: This product could belong to the hazard class "Combustible dust", based on various factors related to the combustibility and explosiveness of its dust, including composition, shape and size of the particles.

References

• ▲1.  Canada. Ministère des transports, Règlement sur le transport des marchandises dangereuses. Ottawa : Éditions du gouvernement du Canada. (2014). [RJ-410222]   http://www.tc.gc.ca/fra/tmd/clair-menu-497.htm
  http://www.tc.gc.ca/tmd/menu.htm
• ▲2.  Pohanish, R.P. et Greene, S.A., Wiley guide to chemical incompatibilities. 2nd ed. New York, N.Y. : Wiley Interscience. (2003). [RR-015033]
• ▲3.  Lenga, R.E. et Votoupal, K.L., The Sigma-Aldrich library of regulatory and safety data. Vol. 3. Milwaukee : Sigma-Aldrich. (1993). [RM-515040]
• ▲4.  National Fire Protection Association, Fire protection guide to hazardous materials. 14th ed. Quincy, Mass. : NFPA. (2010). [RR-334001]
• ▲5.  Cloutier, M. et Cushmac, G., Emergency Response Guidebook 2012. États-Unis : U.S. DOT’s Pipeline and Hazardous Materials Safety Administration. (2012).
• ▲6.  Centre canadien d'hygiène et de sécurité au travail, CHEMINFO, Hamilton, Ont. : Canadian Centre for Occupational Health and Safety   http://ccinfoweb.ccohs.ca/cheminfo/search.html
• ▲7.  ECHA (European Chemicals Agency) , Information on Chemicals (REACH). Helsinki, Finland.  

  http://echa.europa.eu/information-on-chemicals/registered-substances
  ECHA CHEM (europa.eu)

  
  
• ▲8.  OECD, «Sodium dithionite : CAS N°: 7775-14-67.» In: OECD Screening Information Data Set (SIDS) for High Production Volume Chemicals. Paris : UNEP Publications. (2004).   http://www.inchem.org/documents/sids/sids/7775146.pdf

The [number] refers to the Information SST database of the CNESST Documentation Center.