NITROGEN REFRIGERATED LIQUID NF. REFRIGERATED LIQUIDNITROGEN, REFRIGERATED LIQUID NF UN1977 NON-FLAMMABLE GAS 2Rx only.WARNING: Administration of Nitrogen may be hazardous or contraindicated. For use only by or under the supervision of licensed practitioner who is experienced in the use and administration of Nitrogen and is familiar with the indications, effects, dosages, methods, and frequency and duration of administration, and with the hazards, contraindications, and side effects, and the precautions to be taken.WARNING: CONTAINS REFRIGERATED GAS; MAY CAUSE CRYOGENIC BURNS OR INUURY. MAY DISPLACE OXYGEN AND CAUSE RAPID SUFFOCATION. Do not handle until all safety precautions have been read and understood. Use and store only outdoors or in well-ventilated place. Wear cold insulating gloves, face shield, and eye protection. Use back flow preventive device in the piping. DO NOT change or force fit connections. Close valve after each use and when empty. Always keep container in upright position. Read and follow the Safety Data Sheet (SDS) before use.FIRST AID: IF INHALED: Remove person to fresh air and keep comfortable for breathing. IF ON SKIN: Thaw frosted parts with lukewarm water. Do not rub affected area. Get immediate medical advice/attention.CAS: 7727-37-9DO NOT REMOVE THIS PRODUCT LABEL.FLINT WELDING SUPPLY CO.2201 BRANCH ROAD FLINT, MI 48506PHONE (810) 736-005043549(12/14). LIQUID LABEL.