Sodium Hydroxide, 50% w/w Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations . Sodium Hydroxide, 50% w/w . SODIUM HYDROXIDE SOLUTION, 10-30% Update/Review: February 14, 2014 Page 2 of 11 MATERIAL SAFETY DATA Inhalation: Sodium hydroxide does not readily form a vapor and inhalation exposure is likely to occur as an aerosol. Due to its corrosive nature, sodium hydroxide aerosols could cause pulmonary edema (severe, life-threatening lung injury). SAFETY DATA SHEET: SODIUM HYDROXIDE, 0.100 N SODIUM HYDROXIDE, 0.100 N S433.7R INTEGRA Chemical Company 24 Hour Emergency Response: CHEMTREC 800-424-9300 (Outside USA 703-527-3887)

The product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the MSDS contains all the information required by the Controlled Products Regulations. REVISIONS: The MSDS was formatted to comply with ANSI Standard Z400.1-2004 . Revised Logo and Emergency Telephone Number, 02/23/2007. Reviewed 9/12/10. THE INFORMATION PUBLISHED IN THIS MATERIAL SAFETY DATA SHEET HAS BEEN COMPILED FROM OUR EXPERIENCE AND . OSHA, ANSI, NFPA, DOT, ERG, AND CHRIS.