The item under consideration is Ortho -Phosphoric Acid, available in a 2.5 liter plastic container. This substance falls within the category of Lewis Acids, specifically inorganic acids and phosphorus compounds. Its CAS Number is 7664-38-2. Phosphoric acid requires careful handling due to its potential for causing severe skin burns and eye damage. It may also be harmful if ingested. In the workplace, it is recommended to use safety goggles, gloves, and follow caution signs as it can be corrosive to metals. The European Union has established an 8-hour limit value of 1 mg/m3 and a short-term limit value of 2 mg/m3 for occupational exposure.

• CAS Number: 7664-38-2
• Molecular Formula: H3O4P
• Molecular Weight: 97.995
• Exact Mass: 97.97689557
• Boiling Point: greater than 266 °F at 760 mmHg (USCG, 1999)
• Melting Point: 108 °F (NIOSH, 2024)
• Density: Relative Vapour Density (air = 1): 3.4
• GHS Signal Word: Danger
• Hazard Statements:
• H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
• H290 (18%): May be corrosive to metals [Warning Corrosive to Metals]
• H302: Harmful if swallowed [Warning Acute toxicity, oral]