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______________________________________________________________________________________________ <br />Nitric acid (67 - 70%)Revision Date 24-Dec-2021 <br />9. Physical and chemical properties <br />Physical State Liquid <br />Appearance Clear Colorless, Light yellow <br />Odor Strong Acrid <br />Odor Threshold No information available <br />pH < 1.0 (0.1M) <br />Melting Point/Range -41 °C / -41.8 °F <br />Boiling Point/Range Not applicable <br />Flash Point Not applicable <br />Evaporation Rate No information available <br />Flammability (solid,gas)Not applicable <br />Flammability or explosive limits <br />Upper No data available <br />Lower No data available <br />Vapor Pressure 0.94 kPa (20°C) <br />Vapor Density No information available <br />Specific Gravity 1.40 <br />Solubility miscible <br />Partition coefficient; n-octanol/water No data available <br />Autoignition Temperature No information available <br />Decomposition Temperature No information available <br />Viscosity No information available <br />Molecular Formula HNO3 <br />Molecular Weight 63.01 <br />10. Stability and reactivity <br />Reactive Hazard Yes <br />Stability Oxidizer: Contact with combustible/organic material may cause fire. <br />Conditions to Avoid Incompatible products. Combustible material. Excess heat. Exposure to air or moisture over <br />prolonged periods. <br />Incompatible Materials Combustible material, Strong bases, Reducing Agent, Metals, Finely powdered metals, <br />Organic materials, Aldehydes, Alcohols, Cyanides, Ammonia, Strong reducing agents <br />Hazardous Decomposition Products Nitrogen oxides (NOx), Thermal decomposition can lead to release of irritating gases and <br />vapors <br />Hazardous Polymerization Hazardous polymerization does not occur. <br />Hazardous Reactions None under normal processing. <br />11. Toxicological information <br />Acute Toxicity <br />Product Information <br />Oral LD50 Based on ATE data, the classification criteria are not met. ATE > 2000 mg/kg. <br />Dermal LD50 Based on ATE data, the classification criteria are not met. ATE > 2000 mg/kg. <br />Mist LC50 Category 3. ATE = 1 - 5 mg/l. Category 4. <br />Vapor LC50 Based on ATE data, the classification criteria are not met. ATE > 20 mg/l. <br />Component Information <br />Component LD50 Oral LD50 Dermal LC50 Inhalation <br />Nitric acid …% [C ≤ 70 %]Not listed Not listed LC50 = 2500 ppm. (Rat) 1h <br />Water --- <br />Toxicologically Synergistic <br />Products <br />No information available <br />______________________________________________________________________________________________ <br />Page 5 / 9 <br />Delayed and immediate effects as well as chronic effects from short and long-term exposure