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3. HAZARD IDENTIFICATION Carbon Dioxide Gas and Cryogenic Liquid EMERGENCY OVERVIEW: Carbon Dioxide is a colorless gas, or a colorless, cryogenic liquid. At low concentrations, both the gas and the liquid are odorless. At higher concentrations Carbon Dioxide will have a sharp, acidic odor. The liquid boils rapidly at standard temperatures and pressures. At concentrations between 2 and 10%, Carbon Dioxide can cause nausea, dizziness, headache, mental confusion, increased blood pressure and respiratory rate. If the gas concentration reaches 10% or more, suffocation and death can occur within minutes. Contact with the cold gas can cause freezing of exposed tissue. Moisture in the air could lead to the formation of carbonic acid which can be irritating to the eyes. All forms of Carbon Dioxide are non-combustible. Carbon Dioxide is heavier than air and should not be allowed to accumulate in low lying areas. CARBON DIOXIDE GAS CARBON DIOXIDE LIQUEFIED tIAZARDOl15 MATERIAL 14FOF MATKA R6ZPRDOUS MATERIAL NFORMATlON SYSTEM SYSTEM HEALTH PUUQ , HEALTH PULE) 3 FLAMMABILITY ffa 01 1 FLAMMABILITY (mo) o REACTIVITY (YEULOM o REACTIVITY (YELLOW) o PROTECTIVE EQUIPMENTIB I PROTECTIVE EQUIPMENT 3 9 see see see � Section 8 Section 8 Section 8 Section 8 Fa routine irWusbiA appliaib s For routine industrial appkabo bee Section 16 for Definition o a mos SYMPTOMS OF OVEREXPOSURE BY ROUTE OF EXPOSURE: The most significant route of overexposure for this gas is by inhalation. The following paragraphs describe symptoms of exposure by route of exposure. INHALATION: Carbon Dioxide is an asphyxiant and a powerful cerebral vasodilator. If the concentration of Carbon Dioxide reaches 10%or more, suffocation can occur rapidly. Inhalation of concentrations between 2 and 10% can cause nausea, dizziness, headache, mental confusion, increased blood pressure and respiratory rate. Carbon Dioxide initially stimulates respiration and then causes respiratory depression. Inhalation of low concentrations (3-5%) have no known permanent harmful effects. Symptoms in humans at various levels of concentration are as follows: CONCENTRATION SYMPTOMS OF EXPOSURE 1%: Slight increase in breathing rate. 2%: Breathing rate increases to 50%above normal; exposure cause headache, tiredness. 3%: Breathing increases to twice normal rate and becomes labored. Weak narcotic effect. Impaired hearing, headache,increase in blood pressure and pulse rate. 4-5%: Breathing increases to approximately four times normal rate, symptoms of intoxication become evident and slight choking may be felt. 5-10%: Characteristic sharp odor noticeable. Very labored breathing, headache,visual impairment and ringing in the ears. Judgment may be impaired,followed by loss of consciousness. 50-100%: Unconsciousness occurs more rapidly above 10% level. Prolonged exposure to high concentrations may eventually result in death from asphyxiation. High concentrations of this gas can also cause an oxygen-deficient environment. However, the asphyxiating properties of Carbon Dioxide will be reached before oxygen-deficiency is a factor. CARBON DIOXIDE• CO=MSDS(DOCUMENT#001013) PA(;F 9 OF 11