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-IMPRAXAIR Praxair Material Safety Data Sheet <br /> l faking our planet more pmductive" <br /> Product: Hydrogen, Compressed SDS No. P-4604-H <br /> March 2012 <br /> 9. Physical and Chemical Properties (cont.) <br /> SPECIFIC GRAVITY (Air = 1) at 32°F (0°C) and 1 0.07 <br /> atm: <br /> SOLUBILITY IN WATER vol/vol at 60°F (15.6°C) 0.019 <br /> and 1 atm: <br /> PARTITION COEFFICIENT: n-octanol/water: Not available. <br /> AUTOIGNITION TEMPERATURE: 1051°F (566°C) <br /> DECOMPOSITION TEMPERATURE: Not available. <br /> PERCENT VOLATILES BY VOLUME: 100 <br /> MOLECULAR WEIGHT: 2.016 <br /> MOLECULAR FORMULA: HZ <br /> 10. Stability and Reactivity <br /> CHEMICAL STABILITY: ❑ Unstable ® Stable <br /> CONDITIONS TO AVOID: None known. <br /> INCOMPATIBLE MATERIALS: Oxidizing agents, lithium, halogens <br /> HAZARDOUS DECOMPOSITION PRODUCTS: None <br /> POSSIBILITY OF HAZARDOUS REACTIONS: ® May Occur ❑ Will Not Occur <br /> Flammable gas. Forms explosive mixtures with air and oxidizing agents. <br /> 11. Toxicological Information <br /> ACUTE DOSE EFFECTS: Hydrogen is a simple asphyxiant. <br /> STUDY RESULTS: None known. <br /> 12. Ecological Information <br /> ECOTOXICITY: No adverse ecological effects expected. <br /> OTHER ADVERSE EFFECTS: Hydrogen does not contain any Class I or Class II ozone- <br /> depleting chemicals. <br /> 13. Disposal Considerations <br /> WASTE DISPOSAL METHOD: Do not attempt to dispose of residual or unused quantities. <br /> Return cylinder to supplier. <br /> Copyright 1980, 1986, 1992, 1997, 2000, 2004, 2007, 2012, <br /> Praxair Technology, Inc. All rights reserved. Page 6 of 10 <br /> FA vertical line in the left margin indicates revised or new material. <br />