HYDROGEN GAS (<20 PSI)

SECTION 2: Hazards identification

29 CFR 1910.1200) OSHA REGULATORY STATUS: This material is considered hazardous by the OSHA Hazard Communication Standard (29 CFR 1910.1200). ********************************************************************************************************************************** EMERGENCY OVERVIEW: Color: Colorless Physical State: Gas

Appearance/Odor

Clear Odorless

Signal word

DANGER DANGER

Health hazards

SIMPLE ASPHYXIANT. MAY DISPLACE OXYGEN AND CAUSE RAPID SUFFOCATION. INHALATION MAY PRODUCE LOSS OF CONCIOUSNESS WITHOUT WARNING PROPERTIES.

Physical hazards

EXTREMELY FLAMMABLE GAS. CONTAINS GAS UNDER PRESSURE, MAY EXPLODE IF HEATED. Forms explosive mixtures with air and oxidizing agents. Vapor may cause flash fire. Vapor/air mixtures are explosive. Hydrogen burns with an invisible flame. • Flammable Gas - Cat. 1 Extremely Flammable • Gas Under Pressure - Compressed GHS: SUPPLEMENTAL HAZARD: Simple Asphyxiant: May displace oxygen and cause rapid suffocation Not Otherwise Classified • May form explosive mixtures with air • Hydrogen burns with an invisible flame

Precautionary statements

Keep away from all ignition sources. If hydrogen storage containers / cylinders are exposed to excessive heat from fire or flame contact, withdraw immediately to a secure location. Do not breathe gas. Do not enter confined spaces unless adequately ventilated. Do not puncture container. Keep container tightly closed. Use only with adequate ventilation. Use a back flow preventive device in the piping. Use only with equipment rated for cylinder pressure. Do not open valve until connected to equipment prepared for use. Close valve after each use and when empty. Protect from sunlight when ambient temperature exceeds 52°C (125°F). - Prevention • Keep away from heat/sparks/open flames/hot surfaces. — No smoking - Response • Leaking gas fire: Do not extinguish, unless leak can be stopped safely • Eliminate all ignition sources if safe to do so - Storage • Store in a well-ventilated place - Disposal • There are no Precautionary Statement(s) - Disposal phrases assigned

Additional information

Simple Asphyxiant - May displace oxygen and cause rapid suffocation **********************************************************************************************************************************

Hazard pictograms

Flame, Gas cylinder

Hazard statements

GHS - Physical Hazard Statement(s) • Extremely flammable gas

2.3 Other hazards

HNOC)-Health • Simple Asphyxiant - May displace oxygen and cause rapid suffocation See Section 11: TOXICOLOGICAL INFORMATION