The chemical substance discussed is Butyric Acid Methyl Ester, also known as Methyl butyrate, which falls under the category of Reference Substances for Gas Chromatography (GC). It has a Molecular Weight of 102.13 g/mol and belongs to the Carboxylic acid esters substance group. In the workplace, it requires various safety measures due to its flammability, including no open flames, no smoking, and the use of safety goggles and gloves. The CAS Number associated with this compound is 623-42-7.

• CAS Number: 623-42-7
• Molecular Formula: C5H10O2
• Molecular Weight: 102.13
• Exact Mass: 102.068079557
• Boiling Point: 216 °F at 760 mmHg (NTP, 1992)
• Melting Point: -139 °F (NTP, 1992)
• Vapour Density: 3.53 (NTP, 1992) - Heavier than air; will sink (Relative to Air)
• GHS Signal Word: Danger
• Hazard Statements:
• H225 (99.9%): Highly Flammable liquid and vapor [Danger Flammable liquids]