Dung môi Methanol công nghiệp và những ứng dụng quan trọng trong đời sống

Chu Văn An

Methanol (methyl alcohol) is a chemical solvent used in many areas of industrial production. So what is methanol? How are they prepared and how are they specifically applied in industry? Are they toxic and harmful to the body? Let's join Trường Chu Văn An to answer all those questions through the article below!

1. What is methanol?

Methanol is a monofunctional saturated alcohol with many other names such as methyl alcohol, carbino, hydroxy methane, methylol, wood alcohol, wood naphtha or wood spirits, methyl alcohol.

The formula is CH3OH or CH4O. However, unlike the regular alcohol we often drink, this is a strongly toxic substance and cannot be drunk. It is used only in industry, as a solvent to dissolve production materials.

The formula for methyl alcohol is CH3OH

2. Typical physicochemical properties of Methanol

2.1 Outstanding physical properties

• Methyl alcohol is a light alcohol, existing in the form of a colorless, volatile, flammable liquid with a characteristic white wine-like odor.
• At basic room temperature, CH3OH is a polar liquid, often used as a solvent, antifreeze, fuel, and denatured ethanol.
• As a flammable substance, just coming into contact with a low-temperature fire source will ignite with a blue flame, difficult to detect in daylight.
• Methanol is a highly toxic substance, just a small amount can cause blindness, if exposed to large amounts it can cause death.
• Density: 0.7918 g/cm3.
• Boiling point: 64.7 °C (337.8 K; 148.5 °F).
• Viscosity is 5.9×10^−4 Pas (at 20 °C).

Sign Flammable outside the methyl alcohol packaging

2.2 Chemical properties of Methanol

Methyl alcohol is the simplest representative of the saturated alcohol homologous series, so it has the typical chemical properties of an alcohol such as:

• CH3OH reacts with metals to create alcohol salts:

CH3OH + Na → CH3ONa + ½ H2

• CH3OH reacts with inorganic acids:

HCl + CH3OH → H2O + CH3Cl

• Complete oxidation of CH3OH will form carbon dioxide and water, incomplete oxidation will form formic aldehyde. When burning, high levels of CO and CO2 smoke can be created, which can cause explosions (especially in heated sealed containers).

2CH3OH + 3O2 → 2CO2 + 4H2O

CH3OH → HCHO + H2O

• Reaction with CuO

CuO + CH3OH → Cu + HCHO + H2O

• Acetic acid preparation reaction

CH3OH + CO → CH3COOH

• Reaction with acetic acid produces methyl acetate

CH3COOH + CH3OH → H2O + CH3COOCH3

3. How to produce and prepare methanol?

3.1 Methanol in nature

This chemical is produced naturally through the metabolism of many types of anaerobic bacteria or through the biological decomposition of waste, wastewater and sludge.

Methyl alcohol releases the most into the environment due to its use as an industrial solvent in production, storage, use and as fuels such as gas and diesel.

3.2 Preparation of methanol in industry

• Methyl alcohol is a liquid chemical and energy source derived from natural gas, coal, biological waste and CO2. It is synthesized directly from H2 and CO, CO2 with low temperature, catalyst and pressure according to the reaction equation:

CO + 2H2 → CH3OH

• They are prepared from the distillation of alcohol and are the first liquid to condense when wine is boiled in the traditional distillation method. With the following modulation equation:

CH4 + O2 –Cu(200C,100atm) → CH3OH

CO + H2 –(xt.p.t0) → CH3OH

Preparation of methyl alcohol in industry

4. Applications of Methanol in life and production

Methyl alcohol is a chemical compound widely used in daily life as well as industrial production, specifically:

• Methyl alcohol is an important fuel for the transportation industry. It is used to create methyl tert-butyl ether to increase the octane ratio instead of tetraethyl lead – an environmental pollutant.
• Methanol CH3OH is a solvent commonly used in laboratories to run liquid chromatography, upgrade HPLC, and run UV-VIS spectroscopy.
• Methyl alcohol is used in the treatment process of domestic wastewater, as well as industrial wastewater.
• Used in making fuel cells to supply hydrogen.
• Methyl alcohol is used as a raw material in the production of other substances such as formalin, formic aldehyde and acetic acid, etc.
• CH3OH also plays a very important role in industries such as printing, paint, antifreeze, as fuel for small stoves, and as a fuel source for combustion engines.

REFERENCE: Formalin HCHO 37%, Vietnam, 30kg/can

Methyl alcohol chemicals are commonly used in production

• In addition, this chemical is also used to produce industrial alcohol Methanol, a product called “denatured alcohol”. However, this practice has been banned because many people take advantage of it to produce illegal alcohol, causing many deaths due to alcohol poisoning containing methyl alcohol.
• Not only are they a highly beneficial industrial product, they are also used in laboratories and schools.

5. Advantages and disadvantages of Methanol chemical

5.1 What are the advantages of Methanol?

Methyl alcohol is a toxic substance but people still commonly use it because of the outstanding advantages it brings to solve problems in production, cost and time:

• It can be used to replace gasoline with advantages such as lower evaporation than gasoline, low heat generation rate, slower burning than gasoline and when detected, it is only 1/8 of that of gasoline, safe to use. all for the environment.
• Economic savings: The cost of using this chemical is lower than other raw materials.
• Widely used in manufacturing industries.

5.2 Disadvantages of Methanol solvent

• This is a toxic substance to the body, it is easily absorbed through the human intestines, skin, and lungs. Low amounts can lead to drowsiness, confusion, headaches, loss of mobility, and in more severe cases, it can lead to coma, respiratory failure, low blood pressure, cardiac arrest and death. Contact with this chemical can cause dermatitis, rashes, and psoriasis.
• Methanol poisoning is a serious and dangerous type of poisoning, so we need to be careful when using it. Intake by mistake can cause blindness or death. Avoid drinking alcohol that has not been tested for quality and has not been inspected by medical facilities or food safety agencies.

Wine contains high levels of methyl alcohol which can cause poisoning when drunk

6. How toxic is methanol?

Every year, many cases of alcohol poisoning occur due to mistakenly drinking methyl alcohol, also known as industrial alcohol. Unlike ethanol alcohol, methanol alcohol cannot be drunk, the consequences of drinking it by mistake are very serious, in mild cases it can cause blindness and can lead to death.

6.1 Mechanism of toxicity of Methanol alcohol

After entering the body, methyl alcohol will be oxidized to form formaldehyde. This substance is then further oxidized to form formic acid – the main component of ant venom. Formic acid is considered the toxic culprit. Finally, formic acid will be converted into CO2 and water. These two substances are excreted through the lungs and kidneys.

Oxidation occurs quickly, causing formic acid to accumulate in the serum and cause toxicity. This then causes metabolic acidosis. Methanol metabolism and formic acid accumulation in the retina cause retinal damage, optic nerve damage, leading to blindness. Formic acid also causes brain damage, which can lead to death.

• 10mL of this chemical mixed into a drink is enough to cause permanent blindness.
• 30mL (1 sip) can be deadly.

Harmful effects of methyl alcohol on humans

READ MORE: WHAT IS METHYLIC ALCOHOL? WHY CAN METHANOL ALCOHOL CAUSE POISONING?

6.2 Treatment measures for methanol poisoning

When suffering from alcohol poisoning, you need to stay calm and quickly perform the following first aid steps:

• Find a way to induce vomiting, then rub both cheeks vigorously and let the victim drink a cup of hot milk or strong tea.
• You should loosen the shirt and pants, let the victim lie in a cool place but avoid direct drafts on the body.
• The correct position for placing the victim is as follows: lying face down on the bed, arms behind, face tilted to the left.
• Absolutely do not give the victim anti-nausea medication because it will keep the poison and do not give Paracetamol because it will harm the liver.
• If the victim has more dangerous symptoms such as: convulsions, irregular breathing, coma, falls with bleeding ears, eye bags, arrhythmia, etc., the victim should be immediately taken to the emergency hospital. .

When you have methanol poisoning, you should give milk to drink

7. Notes when using and storing Methanol safely

7.1 Notes when using Methanol

• Avoid letting industrial Methanol alcohol come into direct contact with parts of the body.
• When exposed to industrial methyl alcohol vapor, you must wear a suitable mask.
• Do not dilute them with water used to make wine for drinking.
• When methyl alcohol gets into your eyes, wash immediately with clean water. When swallowing this chemical, do not try to induce vomiting, drink filtered water immediately and take to the nearest medical facility.

7.2 What should you pay attention to when preserving Methanol?

• Store methyl alcohol in cool places, taking care to stay away from heat sources.
• When a fire occurs, use powder, dry chemicals, CO2 foam, or fog spray. Be careful not to use water to extinguish fires.

8. Suggested addresses selling pure Methanol, the most reputable industrial Methanol today

Methyl alcohol is an industrial solvent that the government cares about and encourages investment in because it is an important petrochemical that can be applied in many industries and lives. It is also because of those great applications that they appear popular, many businesses have conducted production and import to supply large quantities to the market. However, where to sell this chemical with guaranteed quality, with a business license and the BEST price is a matter of great concern.

Trường Chu Văn An is proud to be one of the leading enterprises specializing in importing and supplying to the market the chemicals industrial Methanol and pure methyl alcohol, meeting most of the wholesale and retail needs of customers in all regions of the Organization. Quoc. After 20 years of operation in the field of industrial chemicals business with a truck system of more than 70 units, Trường Chu Văn An Chemicals is committed to providing customers with quality chemical lines, professionally packaged, Fast delivery, perfect after-sales.

Methyl alcohol chemicals at Trường Chu Văn An have diverse origins: Indonesia, Malaysia, Saudi Arabia with packaging of 163kg/piece.

♦ SEE MORE ♦: Methanol CH3OH, Indonesia, 163kg/drum

Trường Chu Văn An specializes in supplying large quantities of industrial chemicals to the market

9. Some reasons to choose to buy Methanol chemicals at Trường Chu Văn An

Below are the reasons that customers trust and choose Trường Chu Văn An as a reputable chemical supplier:

• Methanol alcohol is a restricted chemical product and Vietchem has a license to trade this type of product.
• The chemicals that Trường Chu Văn An supplies to the market always ensure quality as committed with full documentation, certification, quality and origin of the product.
• The answer “How much does methanol cost” at Trường Chu Văn An always has the best value on the market compatible with the quality of the product
• We have a team of experienced staff ready to advise customers 24/7
• Price incentives for customers who buy in large quantities
• Modern truck system, professional and welcoming freight forwarding team on every road

If you are in need of purchasing Methanol chemicals, please immediately contact Trường Chu Văn An chemical company – This is a leading company specializing in supplying quality, cheap and reputable industrial chemicals and solvents in the world. nationwide. You can contact us immediately using the following methods to receive advice and support directly from a system of experts:

• Address in Hanoi area: No. 41 Tram Street, Long Bien Ward, Long Bien District, City. Hanoi, Vietnam.
• Ho Chi Minh area address: No. 43, Street 19, An Phu Ward, Thu Duc City, Ho Chi Minh City.
• Address in Can Tho area: No. 55, 3/2 Street, Hung Loi Ward, Ninh Kieu District, Can Tho City.
• Tan Thanh Factory: Van Lam – Hung Yen.
• Hai Ha Warehouse: Lot CN5.2Q, Petrochemical Area, Dinh Vu Industrial Park, Dong Hai 2, Hai An, Hai Phong.
• Hotline: 0826 010 010
• Email: sales@hoachat.com.vn
• Website: truongchuvananhue.edu.vn

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