Prepared to U.S.

SECTION 2: Hazards identification

EMERGENCY OVERVIEW This gas mixture is a colorless, odorless gas. Releases of this gas mixture may produce oxygen-deficient atmospheres (espe confined spaces or other poorly-ventilated environments) individuals in such atmospheres may be asphyxiated. SYMPTOMS OF OVER-EXPOSURE BY ROUTE OF EXPOSURE: The most significant route of over-exposure for this gas mixture is by inhalation. INHALATION: Due to the small size of an individual cylinder of this gas mixture, no unusual health effects from over-exposure to the product are anticipated under routine circumstances of use. If mixtures of this gas mixture contain less than 19.5% Oxygen and are released in a small, poorly ventilated area (I.e. an enclosed or confined space), an oxygen-deficient environment may occur. Individuals breathing such an atmosphere may experience symptoms which include headaches, ringing in ears, dizziness, drowsiness, unconsciousness, nausea, vomiting, and depression of all the senses. The effects associated with various levels of oxygen are as follows: INHALATION (continued): The effects associated with various levels of oxygen are as HAZARDOUS MATERIAL IDENTIFICATION SYSTEM follows: CONCENTRATION OF OXYGEN OBSERVED EFFECT 12-16% Oxygen: Breathing and pulse rate increased, muscular coordination

Health hazards

(BLUE) slightly disturbed. D 10-14% Oxygen: Emotional upset, abnormal fatigue, disturbed respiration7 Below 6%: Convulsive movements, possible respiratory collapse, and 6-10% Oxygen: IFL~MMABIUTY HAZARD Nausea, vomiting, collapse, or loss of consciousness. (REO) IJ death.

Potential health effects

OR RISKS FROM EXPOSURE An Explanation in Lay Terms. Over- exposure to this gas mixture may cause the following health effects: 1PHYSICAL HAZARD (YELLOW) ACUTE: Due to the small size of the individual cylinder of this gas mixture, no unusual lJ from exposure to the prodUct are anticipated under routine circumstances of use. The most significant hazard associated with this gas mixture when it contains less PROTECTIVE EQUIPMENT than 19.5% oxygen is the potential for exposure to oxygen-deficient atmospheres. I Symptoms of oxygen deficiency include respiratory difficulty, ringing in ears, headaches, EYES RESPIRATORY HANDS BODY shortness of breath, wheezing, headache, dizziness, indigestion, nausea, unconsciousness, and death. The skin of a victim of over-exposure may have a blue color. See Section 8 CHRONIC: Chronic exposure to oxygen-deficient atmospheres (below 18% oxygen in air) may affect the heart and nervous system. TARGET ORGANS: ACUTE: Respiratory system. CHRONIC: Heart, central nervous For Routine Industrial Use and Handling Applications system. NON-FlAMMABLE GAS MIXTURE MSDS - 50013 Effective Date FEBRUARY 16, 2011 PN3475 PAGE 1 OF4