The compound under discussion is 4-Hydroxybenzoic Acid Propyl Ester, a type of other reference substance for High Performance Liquid Chromatography (HPLC). It falls within the broader category of Natural & Reference Materials, specifically Phytochemicals, and more specifically, Reference substances HPLC/TLC/GC, then Reference Substances for HPLC, and finally, Other reference substances for HPLC. Its Chemical Abstract Service (CAS) number is 94-13-3. This chemical, also known as Propylparaben, has a molecular formula of C10H12O3 and a molecular weight of 180.20. It boils at 271°F at 1mmHg, melts between 203 to 208°F, and has a density of 1.28 at 77°F, making it denser than water and prone to s

• CAS Number: 94-13-3
• Molecular Formula: C10H12O3
• Molecular Weight: 180.20
• Exact Mass: 180.078644241
• Boiling Point: 271 °F at 1 mmHg (NTP, 1992)
• Melting Point: 203 to 208 °F (NTP, 1992)
• Density: 1.28 at 77 °F (NTP, 1992) - Denser than water; will sink
• GHS Signal Word: Danger
• Hazard Statements:
• H315 (63.6%): Causes skin irritation [Warning Skin corrosion/irritation]
• H302: Harmful if swallowed [Warning Acute toxicity, oral]
• H401: Toxic to aquatic life [Hazardous to the aquatic environment, acute hazard]