PRODUCT INFORMATION HAZARDOUS INGREDIENTS PHYSICAL DATA

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1 Tel: Fax: Internet: support@megs.ca Montreal St-Laurent Tel : Fax : Ottawa Nepean Tel : Fax : Quebec Quebec Tel : Fax : MSDS: Nitric Oxide PRODUCT INFORMATION PRODUCT: Nitric Oxide TRADE NAME: Nitric Oxide CHEMICAL NAME: Nitric Oxide; Nitrogen Monoxide SYNONYMS: None FORMULA:NO CHEMICAL FAMILY: Oxide of Nitrogen SUPPLIER'S NAME: MEGS Inc. SUPPLIER'S ADDRESS: 2675 De Miniac Ville St-Laurent, Qc, H4S 1E5 EMERGENCY PHONE NUMBER: (514) MOLECULAR WEIGHT: PRODUCT USE: Various PRODUCT IDENTIFICATION UN 1660 NUMBER: CHEMICAL ID Nitric Oxide HAZARDOUS INGREDIENTS CONCENTRATION CAS # 99+% LD(50) None published LC(50) Inhl-Rat 115 ppm/1 h PHYSICAL DATA PHYSICAL STATE: Gas under pressure APPEARANCE: Colorless gas, reacts with oxygen in air to yield nitrogen dioxide which is yellow-brown in color and has a suffocating odor ODOR: See above ODOR THRESHOLD:Unknown SPECIFIC GRAVITY (H 2 O = 1): See Vapor Density (air = 1)

2 VAPOR PRESSURE: Not applicable (gas) VAPOR DENSITY (air = 1): 1.04 EVAPORATION RATE: Not applicable (gas) BOILING POINT: C FREEZING POINT: C ph: Not applicable (gas) GAS DENSITY: C, kpa COEFFICIENT OF 15 C, Bunsen Coefficient = DISTRIBUTION: CONDITIONS OF FLAMMABILITY: FIRE OR EXPLOSION HAZARD, acts as an oxidizer. MEANS OF EXTINCTION: FLASHPOINT AND METHOD OF DETERMINATION: UPPER EXPLOSION LIMIT (% BY VOL): LOWER EXPLOSION LIMIT (% BY VOL): AUTO-IGNITION TEMPERATURE: FLAMMABILITY CLASSIFICATION: HAZARDOUS COMBUSTION PRODUCTS: EXPLOSION DATA: SENSITIVITY TO STATIC DISCHARGE: None REACTIVITY DATA CHEMICAL STABILITY: Stable INCOMPATIBLE MATERIALS: Oxidizers, halides, hydrocarbons, oxygen CONDITIONS OF REACTIVITY: Presence of oxidizers, moisture HAZARDOUS DECOMPOSITION Reactions with water and oxygen PRODUCTS: yields nitrogen dioxide, nitrous and nitric acids ROUTES OF ENTRY: SKIN CONTACT: None SKIN ABSORPTION: None TOXICOLOGICAL PROPERTIES

3 EYE: Initial exposure may include irritation of the eyes. INHALATION: Vapors are a strong irritant to the pulmonary tract. Initial symptoms of inhalation may be moderate and include irritation of the eyes and throat, tightness of the chest, headache, nausea and gradual loss of strength. Severe symptoms may be delayed (possibly for several hours) and include cyanosis, increased difficulty in breathing, irregular respiration, lassitude and possible eventual death due to pulmonary edema in untreated cases. Due to low solubility in water, the nitrogen oxides are only slightly irritating to the mucous membrane of the upper respiratory tract. Their warning power is therefore low, and dangerous amounts of the fumes may be breathed before any real discomfort is noticed. INGESTION: None ACUTE OVER EXPOSURE EFFECTS: The vapor is highly toxic and hazardous because of its ability to cause delayed chemical pneumonitis and pulmonary edema. The absence of marked acute irritation of nitric oxide limits its warning properties. CHRONIC OVER EXPOSURE EFFECTS: Chronic or repeated exposure may cause a permanent decrease in pulmonary function (silo filler's disease). EXPOSURE LIMITS: TWA = 25 molar ppm IRRITANCY OF PRODUCT: See Eye, above. SENSITIZATION TO MATERIAL: None known CARCINOGENICITY, REPRODUCTIVE EFFECTS: None known TERATOGENICITY, MUTAGENICITY: Mutation in mammalian somatic cells - rat - inhalation 27 ppm/3 hours continuously TOXICOLOGICALLY SYNERGISTIC PRODUCTS: None known PREVENTIVE MEASURES PERSONAL PROTECTIVE EQUIPMENT: Rubber or Teflon gloves. Safety goggles or safety glasses. Safety shoes eyewash "fountain". SPECIFIC ENGINEERING CONTROLS: Nitric oxide is noncorrosive and most common structural materials may be used. However,in the presence of moisture and oxygen, corrosive conditions will develop as a result of the formation of nitric and nitrous acids. Prior to use, systems to contain nitric oxide must first be

4 purged with an inert gas. Where air contamination cannot be eliminated, stainless steel materials should be used. LEAK AND SPILL PROCEDURES: EVACUATE ALL PERSONNEL FROM AFFECTED AREA. Use appropriate protective equipment. If leak is in user's equipment, be certain to purge piping with an inert gas prior to attempting repairs. If leak is on container or container valve, contact the closest MEGS location. WASTE DISPOSAL: Do not attempt to dispose of waste or unused quantities. Return in the shipping container properly labeled, with any valve outlet plugs or caps secured and valve protection cap in place to MEGS for proper disposal. For emergency disposal, contact the closest MEGS location. HANDLING PROCEDURES AND EQUIPMENT: USE ONLY IN WELL- VENTILATED AREAS. Valve protection caps must remain in place unless container is secured with valve outlet piped to the point of use. Do not drag, slide or roll cylinders. Use a suitable hand truck for cylinder movement. Use a pressure regulator when connecting cylinder to lower pressure piping or systems. Do not heat cylinder by any means to increase the discharge rate of product from the cylinder. Use a check valve or trap in the discharge line to prevent hazardous back flow into the cylinder. Do not tamper with (valve) safety device. Close valve after each use and when empty. STORAGE REQUIREMENTS: Protect cylinders from physical damage. Store in cool, dry, well-ventilated area of non combustible construction away from heavily trafficked areas and emergency exits. Do not allow the temperature where cylinders are stored to exceed 52 C. Cylinders must be stored upright and firmly secured to prevent falling or being knocked over. Full and empty cylinders should be segregated. Use a "first in - first out" inventory system to prevent full cylinders being stored for excessive periods of time. TDG CLASSIFICATION: 2.3 (5.1) (8) WHMIS CLASSIFICATION: A, C, D1 SPECIAL SHIPPING INFORMATION: Always secure cylinders in an upright position before transporting them. NEVER transport cylinders in trunks of vehicles, enclosed vans, truck cabs or in passenger compartments. Transport cylinders secured in open flatbed or in open pick-up type vehicles. FIRST AID MEASURES SPECIFIC FIRST AID PROCEDURES: PROMPT MEDICAL ATTENTION IS

5 MANDATORY IN ALL CASES OF OVEREXPOSURE TO NITRIC OXIDE. RESCUE PERSONNEL SHOULD BE EQUIPPED WITH SELF-CONTAINED BREATHING APPARATUS. INHALATION: Conscious persons should be carried (not assisted) to an uncontaminated area and breath fresh air supplement with oxygen. Keep the patient warm, quiet, and under competent medical observation until the danger of the delayed pulmonary edema has passed (at least 72 hours). Any physical exertion during this period should be discouraged as it may increase the severity of the pulmonary edema or chemical pneumonitis. Bed rest is recommended. Unconscious persons should be moved to an uncontaminated area, given assisted resuscitation and supplemental oxygen. Once respiration has been restored they should be treated as above. EYE CONTACT: PERSONS WITH POTENTIAL EXPOSURE TO NITRIC OXIDE SHOULD NOT WEAR CONTACT LENSES. Flush contaminated eye(s) with copious quantities of water. Part eyelids to assure complete flushing. Continue for a minimum of 15 minutes. SKIN CONTACT: Flush affected area with copious quantities of water. Remove affected clothing as rapidly as possible. PREPARED BY: Safety Department DATE PREPARED: 01/01/1999 LAST REVISION DATE: 06/01/2011 PREPARATION INFORMATION THE INFORMATION, RECOMMENDATIONS AND DATA CONTAINED IN THIS DOCUMENT ARE INTENDED TO BE USED BY PROPERLY TRAINED AND QUALIFIED PERSONNEL ONLY AND AT THEIR SOLE RISKS AND DISCRETION. THE INFORMATION, RECOMMENDATIONS AND DATA HEREIN CONTAINED ARE DERIVED FROM SOURCES WHICH WE BELIEVE TO BE RELIABLE. HOWEVER, MEGS INC. MAKES NO REPRESENTATION AND GIVES NO WARRANTY OF ANY KIND WHATSOEVER WITH RESPECT TO THEIR ACCURACY OR COMPLETENESS AND ASSUMES NO LIABILITY FOR DAMAGES OR LOSS ARISING DIRECTLY OR INDIRECTLY FROM THEIR USE, WHETHER PROPER OR IMPROPER.