This is Ortho-Phosphoric Acid, a 10-liter solution available in plastic containers, categorized as a Lewis acid. It falls under the substance groups of Inorganic Acids and Phosphorus Compounds, Inorganic. The CAS Number for this compound is 7664-38-2. As per the recommended indicative occupational exposure limit value for the European Union, an 8-hour limit value of 1 mg/m3 and a short-term limit value of 2 mg/m3 have been established. Workplace precautions include wearing safety goggles, safety gloves, and handling with caution due to its corrosive nature. It is advisable to use this acid in a well-ventilated area and avoid contact with eyes, skin, and clothing.

• 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]