Laserfiche WebLink
=:=0PRAX41R Praxair Material Safety Data Sheet <br /> Making our planet more praluctive" <br /> Product: Hydrogen, Compressed SIDS No. P-4604-H <br /> March 2012 <br /> 8. Exposure Controls/Personal Protection <br /> COMPONENT OSHA PEL ACGIH TLV (2012) <br /> Hydrogen Not established. Simple asphyxiant <br /> IDLH = Not applicable. <br /> ENGINEERING CONTROLS: <br /> Local Exhaust. An explosion-proof local exhaust system is acceptable. See SPECIAL. <br /> Mechanical (General). Inadequate; see special. <br /> Special. Use only in a closed system. <br /> Other. See special. <br /> PERSONAL PROTECTIVE EQUIPMENT: <br /> Skin Protection. Wear work gloves for cylinder handling and metatarsal shoes for cylinder <br /> handling. Select in accordance with OSHA 29 CFR 1910.132, 1910.136, and 1910.138. <br /> Eye/Face Protection. Select in accordance with OSHA 29 CFR 1910.133. <br /> Respiratory Protection. None required under normal use. An air-supplied respirator must be <br /> used in confined spaces. Respiratory protection must conform to OSHA rules as specified in 29 <br /> CFR 1910.134. Select per OSHA 29 CFR 1910.134 and ANSI Z88.2. <br /> 9. Physical and Chemical Properties <br /> APPEARANCE: Colorless gas <br /> ODOR: Odorless <br /> ODOR THRESHOLD: Not applicable. <br /> PHYSICAL STATE: Gas at normal temperature and pressure <br /> pH: Not applicable. <br /> MELTING POINT at 1 atm: -434.56°F (-259.2°C) <br /> BOILING POINT at 1 atm: -422.97°F (-252.76°C) <br /> FLASH POINT (test method): Not available. <br /> EVAPORATION RATE (Butyl Acetate = 1): Not applicable. <br /> FLAMMABILITY: Flammable <br /> FLAMMABLE LIMITS IN AIR, % by volume: LOWER: 4.0% UPPER: 75.0% <br /> LIQUID DENSITY at boiling point and 1 atm: 4.43 Ib/ft3 (70.96 kg/m3) <br /> VAPOR PRESSURE at 68°F (20°C): Not applicable. <br /> VAPOR DENSITY at 70°F (21.1°C) and 1 atm: 0.0052 Ib/ft3(0.083 kg/m3) <br /> SPECIFIC GRAVITY (H20 = 1) at 19.4°F (-7°C): Not available. <br /> Copyright 1980, 1986, 1992, 1997, 2000, 2004, 2007, 2012, <br /> Praxair Technology, Inc. All rights reserved. Page 5 of 10 <br /> FA vertical line in the left margin indicates revised or new material. <br />