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Does anyone have reliable information about the chemical properties of methanol and the combination of methanol with water?
With valid reference
We need this information to select the material for the pump
Information like
viscosity
density
ph
...
Methanol
Methanol, also known as methyl alcohol or wood alcohol, is a simple alcohol with the chemical formula CH3OH. It's a colorless, flammable liquid with a distinctive odor similar to ethanol (drinking alcohol).
Here are some key properties of methanol:
- Physical properties:Melting point: -97.8°C Boiling point: 64.7°C Density: 0.791 g/cm³ Flammable liquid with a low flash point (11°C) Soluble in water and many organic solvents
- Chemical properties:Polar molecule due to the hydroxyl group (-OH) Can act as a fuel, burning to form carbon dioxide and water Can be used as a solvent and antifreeze Toxic if ingested or inhaled
Applications of methanol:
- Fuel: Methanol is used as a fuel in some vehicles, such as race cars and methanol-fueled motorcycles. It is also a potential fuel for future transportation applications due to its lower greenhouse gas emissions compared to gasoline.
- Chemical feedstock: Methanol is a versatile chemical feedstock used in the production of various chemicals, including formaldehyde, acetic acid, and plastics.
- Solvents: Methanol is a good solvent for many organic compounds and is used in various industries, such as paints, coatings, and pharmaceuticals.
- Antifreeze: Methanol can be used as an antifreeze in windshield washer fluid and coolants.
Methanol and Water Mixture
Methanol and water readily mix together due to their similar polarities. The hydroxyl groups in both molecules can form hydrogen bonds with each other, leading to a homogeneous solution.
The properties of the mixture will depend on the ratio of methanol to water. For example, a 50/50 mixture of methanol and water will have a lower freezing point and higher boiling point than pure water.
Applications of methanol-water mixtures:
- Fuel: Methanol-water mixtures are sometimes used as fuels in internal combustion engines. This can help to improve engine performance and reduce emissions.
- Windshield washer fluid: Methanol-water mixtures are commonly used in windshield washer fluid because they can effectively remove ice and snow.
- Denitrification: Methanol is used in wastewater treatment plants to remove nitrogen through a process called denitrification.
Safety considerations:
- Methanol is toxic and can be fatal if ingested, inhaled, or absorbed through the skin. It is important to handle methanol with care and wear appropriate safety gear.
- Methanol-water mixtures can also be flammable, so it is important to take precautions to avoid ignition.
Here are some additional things to keep in mind:
- The flammability of methanol-water mixtures increases as the percentage of methanol increases.
- The toxicity of methanol-water mixtures is not significantly different from that of pure methanol.
- It is important to dispose of methanol-water mixtures properly to avoid environmental contamination.
Gonzalez et al., J. Chem. Thermodynamics, 2007, 39, 1578
Article Density, dynamic viscosity, and derived properties of binary...
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