1-Butoxy-2-Propanol vs. Isopropanol

Attribute	1-Butoxy-2-Propanol	Isopropanol
Chemical Formula	C7H16O2	C3H8O
Molecular Weight	132.20 g/mol	60.10 g/mol
Boiling Point	171-173°C	82.6°C
Appearance	Colorless liquid	Colorless liquid
Odor	Mild, ether-like	Alcohol-like

Chemical Structure

1-Butoxy-2-Propanol, also known as butyl cellosolve, has the chemical formula C₇H₁₆O₂. It is a clear, colorless liquid with a mild odor. Isopropanol, on the other hand, has the chemical formula C₃H₈O and is also a clear, colorless liquid. The main difference in their chemical structures is the presence of a butoxy group in 1-Butoxy-2-Propanol, which is absent in Isopropanol.

Physical Properties

1-Butoxy-2-Propanol has a higher boiling point of around 168°C compared to Isopropanol, which boils at 82.6°C. This difference in boiling points can be attributed to the longer carbon chain in 1-Butoxy-2-Propanol, which results in stronger intermolecular forces. Isopropanol, on the other hand, has a lower viscosity and is more volatile compared to 1-Butoxy-2-Propanol. Both compounds are soluble in water and have a similar density of around 0.8 g/cm³.

Applications

1-Butoxy-2-Propanol is commonly used as a solvent in various industries such as paints, coatings, and cleaning products. Its slow evaporation rate makes it suitable for applications where extended drying times are required. Isopropanol, on the other hand, is widely used as a disinfectant, antiseptic, and solvent. It is commonly found in household products such as rubbing alcohol and hand sanitizers due to its antimicrobial properties.

Toxicity

1-Butoxy-2-Propanol is considered to be moderately toxic and can cause irritation to the skin, eyes, and respiratory tract. Prolonged or repeated exposure to high concentrations of the compound may result in more severe health effects. Isopropanol, on the other hand, is generally recognized as safe for use in household and personal care products when used as directed. However, ingestion of large quantities of Isopropanol can be toxic and may lead to adverse health effects.

Environmental Impact

1-Butoxy-2-Propanol is not readily biodegradable and can persist in the environment for an extended period of time. It may also pose a risk to aquatic organisms if released into water bodies. Isopropanol, on the other hand, is more readily biodegradable and has a lower environmental impact compared to 1-Butoxy-2-Propanol. However, both compounds should be handled and disposed of responsibly to minimize their impact on the environment.

Cleaning Efficiency

1-Butoxy-2-Propanol is known for its excellent cleaning properties and is often used in industrial and commercial cleaning products. Its slow evaporation rate allows it to dissolve and remove a wide range of soils and stains effectively. Isopropanol, on the other hand, is more commonly used for disinfection rather than cleaning. It is effective at killing bacteria and viruses on surfaces but may not be as effective at removing tough stains.

Flammability

1-Butoxy-2-Propanol is considered to be combustible and may pose a fire hazard if exposed to an ignition source. It has a flash point of around 60°C, which means it can ignite at relatively low temperatures. Isopropanol, on the other hand, is highly flammable and has a flash point of 11.7°C. It should be stored and handled with care to prevent accidents and fires.