WHMIS (Sodium hydroxide 73% in aqueous solution)

Workplace Hazardous Materials Information System

WHMIS 2015 classification - Note to reader
Update: 2016-02-18

  • Skin corrosion/irritation - Category 11
  • Serious eye damage/eye irritation - Category 11
  • Health hazards not otherwise classified (corrosion) - Category 11 2

  • WHMIS 2015 pictogram : Corrosion


Causes severe skin burns and eye damage (H314)
Causes severe damage to the respiratory tract

Ingredient disclosure

Comments3 : This product could be corrosive to metals, please contact the supplier for additionnal information.


  • ▲1.  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
  • ▲2.  American Conference of Governmental Industrial Hygienists, Documentation of the threshold limit values and biological exposure indices / Documentation of TLV's and BEI's. 7th ed. Cincinnati, Ohio : ACGIH. (2001-). Publication #0100Doc. [RM-514008]   http://www.acgih.org
  • ▲3.  National association of corrosion engineers, Corrosion data survey : metals section. 6th ed. Houston, Tex. : Nace Publications. (1985). [RT-439006]

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