A Comprehensive Guide to Cleaning Chemicals: Types, Uses, and Safety Precautions

Cleaning is an essential part of our daily lives, and it would be impossible to keep our homes and workplaces spick and span without the help of cleaning chemicals. From laundry detergent to disinfectants, these chemicals play a crucial role in making our living spaces clean and hygienic. But with so many options available in the market, it can be challenging to know which cleaning chemical is right for your needs. In this comprehensive guide, we will explore the different types of cleaning chemicals, their uses, and safety precautions that you should take when using them. So, whether you’re a homeowner or a professional cleaner, this guide has got you covered.

What are Cleaning Chemicals?

Definition and Purpose

Cleaning chemicals refer to a wide range of substances used to remove dirt, stains, and impurities from various surfaces. These chemicals can be classified into different categories based on their composition, mode of action, and intended use.

The primary purpose of cleaning chemicals is to make surfaces clean and hygienic. They are used in homes, offices, and industrial settings to maintain a clean and healthy environment. Cleaning chemicals can be found in the form of liquids, gels, powders, or sprays, and are often designed to be effective against specific types of dirt or stains.

Cleaning chemicals work by breaking down and removing dirt, grease, and other contaminants that accumulate on surfaces over time. Some cleaning chemicals are acidic, while others are alkaline, and they can be abrasive or non-abrasive depending on their composition. The choice of cleaning chemical depends on the type of surface being cleaned, the type of dirt or stain to be removed, and the desired level of cleanliness.

Cleaning chemicals are essential for maintaining a clean and healthy environment, but they must be used safely and correctly to avoid harm to people and the environment. It is important to read the labels and follow the instructions carefully when using cleaning chemicals, and to take appropriate precautions to prevent exposure to hazardous substances.

Types of Cleaning Chemicals

Cleaning chemicals are substances used to remove dirt, stains, and impurities from surfaces. They come in various forms, including liquids, gels, powders, and sprays. Cleaning chemicals are an essential part of maintaining a clean and hygienic environment, and they are used in homes, offices, and industrial settings.

There are several types of cleaning chemicals, each designed for specific purposes. Here are some of the most common types of cleaning chemicals:

  1. All-purpose cleaners: These are cleaning chemicals that can be used on a variety of surfaces, including floors, walls, and countertops. They typically contain a combination of surfactants, enzymes, and water.
  2. Glass cleaners: These cleaning chemicals are specifically designed to remove smudges, fingerprints, and other marks from glass surfaces. They typically contain a combination of alcohol, ammonia, and other chemicals.
  3. Oven cleaners: These cleaning chemicals are used to remove baked-on grease and food residue from ovens and stovetops. They typically contain a combination of hydrochloric acid, sodium hydroxide, and other chemicals.
  4. Drain cleaners: These cleaning chemicals are used to unclog drains and pipes. They typically contain a combination of sulfuric acid, sodium hydroxide, and other chemicals.
  5. Carpet cleaners: These cleaning chemicals are used to remove dirt, stains, and odors from carpets and upholstery. They typically contain a combination of water, surfactants, and enzymes.
  6. Mold and mildew removers: These cleaning chemicals are used to remove mold and mildew from surfaces such as bathrooms, basements, and kitchens. They typically contain a combination of bleach, fungicides, and other chemicals.

It is important to choose the right type of cleaning chemical for the surface you are cleaning and to follow the manufacturer’s instructions for safe and effective use.

Examples of Cleaning Chemicals

Cleaning chemicals are substances used to remove dirt, stains, and impurities from surfaces. They come in various forms, including liquids, gels, powders, and sprays. Examples of cleaning chemicals include:

  1. Detergents: Detergents are cleaning agents that are added to water to remove dirt and stains from surfaces. They are commonly used in laundry and dishwashing.
  2. Bleach: Bleach is a powerful oxidizing agent that is used to disinfect and whiten surfaces. It is commonly used to clean bathrooms, kitchens, and laundry.
  3. Ammonia: Ammonia is a strong alkaline solution that is used to clean surfaces and remove grease and stains. It is commonly used in floor cleaners and glass cleaners.
  4. Acids: Acids are corrosive substances that are used to clean and descale surfaces. They are commonly used in toilet bowl cleaners and rust removers.
  5. Enzymatic cleaners: Enzymatic cleaners are biological cleaning agents that use enzymes to break down organic matter such as grease, oil, and blood. They are commonly used in laundry and for cleaning drains.
  6. Solvents: Solvents are chemicals that dissolve other chemicals and are used to clean surfaces and remove stubborn stains. They are commonly used in paint thinners and adhesive removers.
  7. Disinfectants: Disinfectants are chemicals that kill germs and bacteria on surfaces. They are commonly used in hospitals, kitchens, and bathrooms.

It is important to use cleaning chemicals safely and according to their intended use and instructions on the label. Improper use of cleaning chemicals can cause skin irritation, respiratory problems, and other health issues.

How to Choose the Right Cleaning Chemicals

Key takeaway: Cleaning chemicals are substances used to remove dirt, stains, and impurities from surfaces and come in various forms such as liquids, gels, powders, and sprays. They are essential for maintaining a clean and healthy environment but must be used safely and correctly to avoid harm to people and the environment. It is important to choose the right type of cleaning chemical for the surface being cleaned and follow the manufacturer’s instructions for safe and effective use. There are different types of cleaning chemicals, including all-purpose cleaners, glass cleaners, oven cleaners, drain cleaners, carpet cleaners, and mold and mildew removers. Proper handling and storage of cleaning chemicals, as well as the use of personal protective equipment (PPE), are crucial to prevent accidents and ensure their effectiveness. The environmental impact of cleaning chemicals should also be considered, and green cleaning alternatives can be used to minimize their negative effects on the environment.

Factors to Consider

When selecting the appropriate cleaning chemicals for your needs, there are several factors to consider. These factors include:

  1. Surface Material: Different cleaning chemicals are suitable for different surface materials. For example, acids should not be used on surfaces made of aluminum or brass, as they can cause corrosion.
  2. Type of Soil: Different cleaning chemicals are effective at removing different types of soil. For example, a grease-cutting detergent may be needed to remove oil stains, while a bleach solution may be needed to remove mold stains.
  3. Strength: The strength of the cleaning chemical is also an important consideration. Stronger chemicals may be required for heavy-duty cleaning, while weaker chemicals may be more appropriate for delicate surfaces.
  4. Safety: It is important to consider the safety of the cleaning chemicals, particularly if they will be used in a residential setting. Hazardous chemicals should be avoided, and safety data sheets (SDS) should be consulted to ensure that the chemicals are safe to use.
  5. Cost: The cost of the cleaning chemicals is also an important consideration. While more expensive chemicals may be more effective, they may not be necessary for every cleaning job. It is important to weigh the cost against the benefits of the chemicals before making a purchase.
  6. Environmental Impact: If environmental impact is a concern, it may be worth considering eco-friendly cleaning chemicals. These chemicals are typically made from natural ingredients and are less harmful to the environment.

By considering these factors, you can choose the right cleaning chemicals for your needs and ensure that they are safe and effective for the job at hand.

Tips for Selecting the Best Cleaning Chemicals

Choosing the right cleaning chemicals is crucial to achieving a clean and healthy environment. Here are some tips to help you select the best cleaning chemicals for your needs:

  1. Consider the surface to be cleaned: Different cleaning chemicals are designed for specific surfaces. For example, some cleaning chemicals are better suited for hard floors, while others are ideal for carpets or upholstery.
  2. Know the type of soil or stain: Some cleaning chemicals are designed to remove specific types of soil or stains. For example, if you need to remove grease or oil stains, you’ll want to choose a cleaning chemical that is specifically designed for that purpose.
  3. Check the compatibility with other products: Some cleaning chemicals may not be compatible with other products, such as bleach and ammonia. Be sure to read the labels carefully and avoid mixing chemicals that can react negatively.
  4. Look for eco-friendly options: If you’re concerned about the environment, look for cleaning chemicals that are eco-friendly and made from natural ingredients.
  5. Check the safety precautions: Before using any cleaning chemicals, be sure to read the safety precautions on the label. This will help you avoid any potential hazards and use the product safely.
  6. Follow the instructions: Always follow the instructions on the label when using cleaning chemicals. This will help you achieve the best results and avoid any potential hazards.
  7. Keep cleaning chemicals away from children and pets: Store cleaning chemicals in a safe place, away from children and pets. This will help prevent accidental ingestion or contact with the chemicals.

By following these tips, you can select the best cleaning chemicals for your needs and achieve a clean and healthy environment.

Uses of Cleaning Chemicals

Domestic Cleaning

Cleaning chemicals are essential tools for maintaining a clean and hygienic home. From kitchen countertops to bathroom tiles, these chemicals help to remove dirt, grime, and stains, leaving your home looking and smelling fresh. In this section, we will discuss the various types of cleaning chemicals commonly used in domestic cleaning and their applications.

Types of Cleaning Chemicals

There are many different types of cleaning chemicals available for domestic use, each designed for specific cleaning tasks. Some of the most common types include:

  • All-purpose cleaners: These are versatile cleaning solutions that can be used on a variety of surfaces, including floors, countertops, and walls. They typically contain a combination of surfactants, enzymes, and solvents that work together to break down dirt and stains.
  • Glass cleaners: These cleaners are specifically designed to remove greasy and watermark stains from glass surfaces, such as windows and mirrors. They often contain alcohol or ammonia to help dissolve grime and streaks.
  • Oven cleaners: These cleaners are used to remove baked-on grease and food residue from ovens and stovetops. They typically contain harsh chemicals, such as hydrochloric acid or sodium hydroxide, that can break down and dissolve tough stains.
  • Laundry detergents: These cleaning agents are used to wash clothes and linens. They typically contain surfactants, enzymes, and fragrances that help to remove dirt and stains from fabrics.

Applications of Cleaning Chemicals

Cleaning chemicals can be used in a variety of applications around the home, including:

  • Kitchens: Cleaning chemicals are used to remove grease, grime, and food residue from kitchen surfaces, including countertops, sinks, and stovetops.
  • Bathrooms: Cleaning chemicals are used to remove soap scum, hard water stains, and grime from bathroom surfaces, including tiles, shower walls, and toilets.
  • Floors: Cleaning chemicals are used to remove dirt, grime, and stains from floors, including carpets, rugs, and hardwood surfaces.
  • Windows: Cleaning chemicals are used to remove dirt, grime, and streaks from windows and mirrors.

Safety Precautions

When using cleaning chemicals, it is important to take safety precautions to avoid accidental exposure or injury. Some safety tips include:

  • Always read the label and follow the instructions carefully.
  • Wear gloves and other appropriate protective gear when handling harsh chemicals.
  • Keep cleaning chemicals out of reach of children and pets.
  • Never mix different cleaning chemicals, as this can create hazardous fumes or reactions.
  • Always work in a well-ventilated area to avoid inhaling fumes.

In conclusion, cleaning chemicals are essential tools for maintaining a clean and hygienic home. By understanding the different types of cleaning chemicals and their applications, as well as taking appropriate safety precautions, you can keep your home looking and smelling fresh while avoiding accidental exposure or injury.

Commercial Cleaning

Cleaning chemicals play a vital role in maintaining the cleanliness and hygiene of commercial spaces such as offices, schools, hospitals, and public buildings. In these settings, cleaning chemicals are used to remove dirt, grime, and stains from surfaces, as well as to sanitize and disinfect areas to prevent the spread of germs and diseases.

Some common cleaning chemicals used in commercial settings include:

  • All-purpose cleaners: These are used to clean a variety of surfaces, including floors, walls, and countertops. They are typically a combination of water and a cleaning agent, such as alcohol or ammonia.
  • Glass cleaners: These are specifically designed to clean glass surfaces, such as windows and mirrors. They typically contain alcohol or ammonia, which helps to remove streaks and smudges.
  • Disinfectants: These chemicals are used to kill germs and bacteria on surfaces. They can be used on a variety of surfaces, including floors, countertops, and bathroom fixtures.
  • Detergents: These are used to clean clothes and other textiles. They are typically a combination of water and a cleaning agent, such as soap or bleach.

When using cleaning chemicals in a commercial setting, it is important to follow proper safety procedures to prevent injury or illness. This may include wearing protective gloves and eyewear, ventilating the area, and storing chemicals out of reach of children and pets. It is also important to read and follow the instructions on the label of each chemical, as improper use can lead to negative health effects or damage to surfaces.

Industrial Cleaning

Cleaning chemicals play a vital role in maintaining a clean and safe working environment in industrial settings. Industrial cleaning involves the use of specialized cleaning chemicals to remove stubborn dirt, grease, and grime from machinery, equipment, and facilities in factories, warehouses, and other industrial spaces.

Some common types of cleaning chemicals used in industrial cleaning include:

  • Degreasers: These chemicals are specifically designed to break down and remove grease, oil, and other lubricants from machinery and equipment.
  • Detergents: These chemicals are used to clean and sanitize surfaces, and are often used in food processing and manufacturing facilities to ensure that surfaces are free from bacteria and other contaminants.
  • Acids and bases: These chemicals are used to clean and descale pipes, tanks, and other industrial equipment.
  • Solvents: These chemicals are used to dissolve and remove adhesives, glues, and other stubborn materials.

Industrial cleaning is an essential process in many industries, as it helps to maintain the integrity and functionality of machinery and equipment, as well as ensuring the safety and health of workers. Proper training and safety precautions must be taken when using industrial cleaning chemicals to avoid accidents and exposure to hazardous substances.

Safety Precautions When Using Cleaning Chemicals

Proper Handling and Storage

Proper handling and storage of cleaning chemicals are crucial to prevent accidents and ensure their effectiveness. Here are some guidelines to follow:

  1. Store cleaning chemicals in their original containers: Never transfer cleaning chemicals to other containers, as this can compromise their safety and efficacy. Keep the containers tightly sealed and stored in a cool, dry place, away from direct sunlight and sources of heat.
  2. Keep chemicals out of reach of children and pets: Cleaning chemicals should be stored in a secure location, out of reach of children and pets, to prevent accidental ingestion or contact.
  3. Label chemicals correctly: Label all cleaning chemicals with their name and the date they were opened. This will help you keep track of the chemicals’ expiration dates and ensure they are used before they become ineffective.
  4. Handle chemicals with care: When handling cleaning chemicals, wear protective gloves and eyewear to prevent skin and eye irritation. Always read the product labels and follow the manufacturer’s instructions for safe use.
  5. Never mix chemicals: Never mix different cleaning chemicals, as this can create toxic fumes and other hazardous conditions. Always use one chemical at a time and allow the surface to dry before applying another chemical.
  6. Dispose of chemicals properly: Once cleaning chemicals have been used, never pour them down the drain or into the trash. Follow the manufacturer’s instructions for proper disposal, which may involve taking them to a hazardous waste facility or storing them until they can be disposed of safely.

By following these guidelines for proper handling and storage of cleaning chemicals, you can ensure a safe and effective cleaning process.

Personal Protective Equipment (PPE)

Proper personal protective equipment (PPE) is crucial when working with cleaning chemicals to ensure the safety of individuals in contact with these substances. The following are the recommended PPE for different types of cleaning chemicals:

  • Skin Protection: Gloves are the most common form of skin protection used when working with cleaning chemicals. Nitrile or latex gloves are preferred as they provide a good barrier against most cleaning chemicals. For stronger chemicals, such as bleach or acids, it is recommended to use gloves made of materials like butyl or neoprene.
  • Eye Protection: When working with cleaning chemicals, it is important to wear appropriate eye protection, such as goggles or safety glasses. This is especially important when working with strong acids or alkalis, as they can cause severe eye irritation or damage.
  • Respiratory Protection: In some cases, it may be necessary to wear a respirator to protect against inhaling fumes or particles from cleaning chemicals. This is particularly important when working with strong bleach or ammonia solutions. It is essential to choose a respirator that is appropriate for the specific chemical being used and to ensure it fits properly to provide adequate protection.
  • Protective Clothing: In some cases, it may be necessary to wear protective clothing, such as a lab coat or apron, to prevent chemicals from coming into contact with skin or clothing. This is particularly important when working with strong acids or alkalis, as they can cause severe skin or fabric damage.

It is important to note that PPE should be chosen based on the specific cleaning chemical being used and the level of exposure. Additionally, PPE should be properly maintained and replaced when necessary to ensure continued protection.

Common Hazards and How to Avoid Them

Cleaning chemicals can pose significant risks to health and safety if not used properly. Here are some common hazards to be aware of and how to avoid them:

  • Skin Irritation: Many cleaning chemicals can cause skin irritation, including bleach, ammonia, and acids. To avoid this, wear protective gloves and clothing when handling these chemicals. If you do come into contact with a cleaning chemical, wash the affected area immediately with soap and water.
  • Inhalation: Inhaling cleaning chemicals can cause respiratory problems, including asthma and bronchitis. Always use cleaning chemicals in a well-ventilated area, and avoid inhaling fumes by using a mask or ventilation system.
  • Eye Irritation: Cleaning chemicals can also cause eye irritation, including burns and blindness. To avoid this, always wear protective goggles when handling these chemicals. If you do get cleaning chemicals in your eyes, rinse them immediately with water for at least 15 minutes.
  • Fire Hazards: Some cleaning chemicals can ignite or explode if mixed together or exposed to heat or flames. Always read the labels carefully and avoid mixing different cleaning chemicals. Keep cleaning chemicals away from open flames and heat sources.
  • Ingestion: Cleaning chemicals can be accidentally ingested if they come into contact with food or drinks. Always store cleaning chemicals in a safe place, away from food and drinks. If you do ingest a cleaning chemical, seek medical attention immediately.
  • Environmental Damage: Some cleaning chemicals can be harmful to the environment if not disposed of properly. Always follow the instructions on the label for safe disposal, and avoid pouring cleaning chemicals down the drain or into the ground.

By being aware of these common hazards and taking appropriate precautions, you can safely use cleaning chemicals in your home or workplace.

Environmental Impact of Cleaning Chemicals

Types of Environmental Impact

When it comes to the environmental impact of cleaning chemicals, there are several types of effects that need to be considered. These include:

  • Air pollution: The use of certain cleaning chemicals can release harmful pollutants into the air, such as volatile organic compounds (VOCs) and particulate matter. These pollutants can contribute to the formation of smog and can have negative impacts on human health, including respiratory problems.
  • Water pollution: Many cleaning chemicals contain ingredients that can be harmful to aquatic life when released into the environment. These include surfactants, enzymes, and other chemicals that can be toxic to fish and other aquatic organisms.
  • Soil pollution: Some cleaning chemicals can leach into the soil and cause long-term damage to the environment. This can include the contamination of groundwater, which can be harmful to both human and animal health.
  • Human health impacts: Certain cleaning chemicals can be harmful to human health if used improperly or if exposed to them in large quantities. This can include skin irritation, respiratory problems, and other health issues.

It is important to be aware of these potential environmental impacts when using cleaning chemicals and to take steps to minimize their use and reduce their impact on the environment. This can include using eco-friendly cleaning products, using alternative cleaning methods, and properly disposing of cleaning chemicals to prevent them from entering the environment.

Green Cleaning Alternatives

Cleaning products play a vital role in maintaining hygiene and sanitation in our homes, workplaces, and public spaces. However, many traditional cleaning chemicals contain hazardous ingredients that can have negative environmental impacts. Fortunately, there are green cleaning alternatives that are safer for the environment and human health.

Types of Green Cleaning Alternatives

There are several types of green cleaning alternatives available, including:

  • Natural cleaning products made from plant-based ingredients
  • Biodegradable cleaning products that break down quickly and harmlessly in the environment
  • Cleaning products made from recycled materials
  • Products that use minimal packaging or are packaged in recyclable materials

Advantages of Green Cleaning Alternatives

Using green cleaning alternatives offers several benefits, including:

  • Reducing the amount of toxic chemicals released into the environment
  • Conserving natural resources by using sustainable materials
  • Reducing the carbon footprint of cleaning products
  • Promoting better indoor air quality by using non-toxic ingredients

Choosing the Right Green Cleaning Alternative

When choosing a green cleaning alternative, it’s important to consider the following factors:

  • Ingredients: Look for products that use natural, non-toxic, and biodegradable ingredients.
  • Effectiveness: Choose products that are effective at cleaning without harming the environment.
  • Cost: Consider the cost of the product and whether it offers good value for money.
  • Availability: Look for products that are easily available in your area.

Tips for Green Cleaning

Here are some tips for green cleaning:

  • Use microfiber cloths instead of disposable paper towels to reduce waste.
  • Avoid using cleaning products that contain phosphates, chlorine, or ammonia, which are harmful to the environment.
  • Use cold water for laundry and dishwashing to save energy.
  • Air dry clothes instead of using a dryer to reduce energy consumption.
  • Use a dish rack instead of a dish dryer to reduce energy use.

By choosing green cleaning alternatives and following these tips, you can help reduce the environmental impact of cleaning products and promote a healthier environment for everyone.

Recap of Key Points

  • The environmental impact of cleaning chemicals is a pressing concern due to their potential to harm ecosystems and human health.
  • Toxic chemicals can accumulate in water sources, contaminate soil, and lead to long-term damage to ecosystems.
  • Cleaning products contribute to the overall chemical load in the environment, which can cause adverse effects on aquatic life, wildlife, and human health.
  • Hazardous chemicals can pose risks to human health, particularly for those with sensitivities or exposure to high concentrations.
  • Green cleaning alternatives are gaining popularity as a more sustainable option, but they may require careful consideration of their own environmental impact.
  • Regularly cleaning and maintaining household items can help reduce the need for harsh chemicals and extend their lifespan, promoting sustainability.
  • Proper disposal of cleaning chemicals is crucial to prevent harm to the environment and human health.
  • Regular monitoring and evaluation of cleaning product ingredients can help consumers make informed decisions and promote safer and more sustainable cleaning practices.

Final Thoughts on Cleaning Chemicals

While cleaning chemicals play a crucial role in maintaining hygiene and preventing the spread of illness, it is important to consider their potential environmental impact. The use of cleaning chemicals can contribute to water pollution, soil contamination, and the release of harmful gases into the atmosphere.

To minimize the environmental impact of cleaning chemicals, it is essential to choose eco-friendly products that are biodegradable and non-toxic. This can help reduce the amount of harmful chemicals that are released into the environment and contribute to a more sustainable future.

It is also important to dispose of cleaning chemicals properly to prevent them from entering the environment. This may involve using designated collection points or facilities for hazardous waste, or following local guidelines for disposing of cleaning chemicals.

In conclusion, while cleaning chemicals are necessary for maintaining a clean and healthy environment, it is important to consider their potential environmental impact and take steps to minimize it. By choosing eco-friendly products and disposing of chemicals properly, we can help protect the environment and contribute to a more sustainable future.

FAQs

1. What are some examples of cleaning chemicals?

There are many types of cleaning chemicals available, including detergents, bleach, ammonia, acids, abrasives, and disinfectants. Detergents are used for general cleaning tasks, while bleach is often used to disinfect and whiten surfaces. Ammonia is a strong cleaning agent that can be used for tough stains, and acids are used to remove mineral deposits and other tough stains. Abrasives are used to scrub and clean surfaces, while disinfectants are used to kill germs and bacteria.

2. What are the uses of cleaning chemicals?

Cleaning chemicals are used to remove dirt, stains, and germs from surfaces around the home or office. They can be used to clean floors, walls, countertops, and other surfaces. Some cleaning chemicals are specifically designed to clean certain types of surfaces, such as glass, metal, or fabric. Cleaning chemicals can also be used to deodorize and freshen up spaces.

3. How do I safely use cleaning chemicals?

When using cleaning chemicals, it is important to follow the instructions on the label carefully. This includes mixing the chemicals correctly, using the right amount, and wearing any necessary protective gear. It is also important to work in a well-ventilated area and avoid inhaling any fumes. If you experience any adverse reactions while using cleaning chemicals, such as irritation or difficulty breathing, stop using the product immediately and seek medical attention if necessary.

4. Can cleaning chemicals be harmful?

Some cleaning chemicals can be harmful if used improperly or if they come into contact with skin or eyes. Strong cleaning chemicals such as bleach and ammonia can cause irritation or damage to the skin, eyes, and respiratory system if used improperly. It is important to handle these chemicals with care and wear protective gear when necessary. Some cleaning chemicals can also be toxic if ingested or inhaled in large amounts, so it is important to keep them out of reach of children and pets.

5. Are there any eco-friendly cleaning chemicals available?

Yes, there are many eco-friendly cleaning chemicals available that are made from natural or biodegradable ingredients. These cleaning products are typically free from harsh chemicals and can be used to clean surfaces in a safe and effective way. Some examples of eco-friendly cleaning chemicals include baking soda, vinegar, and essential oils. These products can be used to clean floors, countertops, and other surfaces, and they are often safer to use around children and pets.

Cleaning Agents used in Hotel Housekeeping/ Classification of cleaning agents/ Common cleaning agent

Leave a Reply

Your email address will not be published. Required fields are marked *