This is an ortho-phosphoric acid solution with a concentration of 85% in deuterium oxide (D2O), offered in a volume of 25 mL. It falls under the category of deuterated acids and bases, specifically designed for nuclear magnetic resonance (NMR) spectroscopy. The compound's preferred name is phosphoric acid, as per IUPAC nomenclature. Its molecular formula is H3O4P, and it has a molecular weight of 97.995 g/mol. This solution exhibits a relative Vapour Density higher than air, with a value of 3.4. According to GHS classification, this product carries a danger signal word due to its potential for causing severe skin burns, eye damage, and harm if swallowed.

• CAS Number: 14335-33-2
• 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]