2-Methylbenzaldehyde (CAS: 529-20-4), also known as o-tolualdehyde, is a key organic synthesis intermediate with distinct chemical and physical characteristics. For professionals in chemical manufacturing, research and development, and quality control, a thorough understanding of these properties is essential for safe and effective handling, storage, and application. As a prominent supplier of this compound, we aim to provide clear insights into its nature.

Physical Characteristics

The most readily observable characteristic of 2-Methylbenzaldehyde is its appearance: it is typically a colorless to light yellow transparent liquid. This liquid state at room temperature is consistent with its relatively low melting point, reported around -35°C, and a boiling point of approximately 199-200°C at standard atmospheric pressure. Its density is around 1.039 g/mL at 25°C. These physical properties are important for material handling, transport, and process design. Its volatility, indicated by a vapor pressure of 0.3970 mmHg at 25°C, also informs safety protocols regarding ventilation.

Chemical Reactivity and Stability

As an aromatic aldehyde, 2-Methylbenzaldehyde exhibits reactivity typical of this functional group. The carbonyl group (-CHO) is susceptible to nucleophilic addition, oxidation to a carboxylic acid, and reduction to an alcohol. The presence of the methyl group on the aromatic ring can influence the electron density and, consequently, the reactivity of the aldehyde. Stability is generally good under recommended storage conditions. Manufacturers often suggest storing it in an inert atmosphere, ideally at 2-8°C, and keeping containers tightly closed to prevent oxidation or contamination.

Solubility Profile

Understanding the solubility of 2-Methylbenzaldehyde is crucial for its use in various reaction media. It is known to be readily soluble in common organic solvents such as ethanol, ether, and chloroform. While it has limited solubility in water, its polar carbonyl group allows for some degree of dissolution. This solubility profile makes it adaptable for a wide range of synthetic procedures, allowing chemists to select appropriate reaction solvents based on the desired transformation and subsequent purification steps.

Safe Handling and Storage Practices

Given its chemical nature, proper handling and storage are paramount. Safety data sheets (SDS) typically indicate that 2-Methylbenzaldehyde can be irritating to the skin, eyes, and respiratory system. Therefore, appropriate personal protective equipment (PPE) such as gloves, safety goggles, and lab coats should be worn when handling the material. Work should be conducted in well-ventilated areas, preferably under a fume hood. Storage in a cool, dry, well-ventilated place, away from open flames and heat sources, is recommended. Ensuring that containers remain tightly sealed when not in use is also important for maintaining product integrity and preventing exposure.

For businesses looking to purchase 2-Methylbenzaldehyde, partnering with a knowledgeable manufacturer and supplier is key. We ensure our product meets high purity standards and provide the necessary technical information for its safe and effective use in your chemical processes. Inquire today to secure your supply.