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12 Chemicals That’s Not Allowed in High School – Exposure & Danger

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Students learn chemistry at school. They will usually taken to laboratory to conduct experiment and given assessment in order for the students to learn about various chemical formula and chemical reaction. Conducting chemical research or study at school laboratory needs secure regulation, especially since students may not fully aware of the danger and some chemicals that’s not allowed in high school.


To prevent misuse, injury, and other dangers such as fire and explosion, school should inform about the labeling of each chemical used. Moreover, students also need to know which banned toxic chemicals to avoid. Here is the list of chemicals not allowed in high school.

  1. Acetamide

Acetamide belongs to organic compound with chemical formula CH3CONH2. The chemical is a derivative amide from acetic acid. Acetamide appears colorless with no odor to a mouse-like smell. This compound has low melting point from 79 to 81˚ Celcius, making it a flammable chemical. (Related to Examples of Organic Compounds and Uses)

Moreover, the chemical is derived from acid compound that makes it highly irritable to skin. Therefore, it should not be performed recklessly on an amateur experiment. Research or experiment using acetamide is not allowed in high school and should be performed by professional only.

  1. Acetal

Another prohibited chemical not to be used in school experiment is acetal. Acetal has four bonds in its central atom with chemical formula R2C(OR’)2. The chemical is composed from hydroxyl and hemiacetal in which protonation is the medium in water.

The danger acetal exposes that makes it among chemicals not allowed in high school is because it is highly inflammable in both liquid and vapour form. If students unknowingly mix acetal with some other chemicals, it may result in explosive peroxides. Not to mention direct contact to acetal will cause skin irritation. Therefore, this chemical is not for amateur use.

  1. Ethyl Bromide

Some outdated chemicals in school library may still be stored. There should be a regular check up to laboratory because ethyl bromide is no longer allowed to be used in school. It has the chemical formula of C2H2Br and has the form of colorless liquid with low boiling point.

The hazard it exposes to those who have no idea how to handle it are; flammable nature. Ethyl bromide is flammable and should not be treated without care. Second, it can cause irritation in lungs when it is directly inhaled. Therefore, any school should not allow any use or store this ethyl bromide anymore.

  1. Barium

As school usually undergoes experiments to create reaction, what was once a safe chemical can produce deadly result if it is treated in certain manner. It is the case with bromide. Bromide is a chemical with formula Ba. The chemical is often used in electricity experiment related to its function in the forming of fluorescent lamps. Some reactions with other chemicals make the compound toxic.

Soluble barium is poisonous that can affect nervous system and cardiovascular. High exposure to it can also cause problems in respiratory system, heart, immune system, eyes, and skin. It was used as illustration for elements but was found to be too risky to be used by students. When water alone is added, barium becomes highly toxic and that is why it is not allowed in high school.

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  1. Chromium Trioxide

Chromium trioxide is among inorganic compound with chemical formula CrO3. The chemical has purplish red color when it is anhydrous state and can change to orange when it is met with hydrolysis. It has no odor and has high melting point of 187˚ Celcius.

There are many dangers that people have to face it chromium trioxide is not treated properly. The chemical is toxic and is carcinogen. Carcinogen chemical makes it possible to trigger cancer. It is also highly flammable, which is dangerous when it sparks fire in a school laboratory full of students. Moreover, contact direct to it can cause skin irritation. Since it has too many dangers, chromium trioxide is among chemicals not allowed in high school as well as listed among Most Dangerous Chemicals in The World.

  1. Potassium Chlorate

Explosion in school laboratory is the last thing school wishes to happen. Therefore, potassium chlorate becomes one of the most banned chemical in school use.

Potassium chlorate is used as demonstration in various grades including high school. The use of potassium chlorate should be careful since it can trigger explosion if it is exposed to molten chemical. Moreover, the chemical should not be stored in storing other than those with oxidizing agent because if it does, it may turn toxic. If it is toxic then it should be not allowed to be used in school, as one of many chemicals that’s not allowed in high school.

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  1. Diethyl Ether

Belongs to list of organic chemicals, diethyl ether is a colorless chemical commonly used as starter in laboratory experiment and starting fluid. The chemical formula of diethyl ether is (C2H5)2O. Diethyl ether is a useful solvent in laboratory use, however, due to the hazard it exposes, it should not be used by students.

The chemical is highly flammable, can spark fire in the slightest reaction. Some cases of fire have been reported. Moreover, if it decomposes, it will become explosive peroxides and will trigger explosion if experiment is done carelessly without procedure. It is also skin irritation, hence making its use is limited in laboratory study in school.

  1. Carbon Disulfide

Another hazard chemicals not allowed in high school is carbon disulfide. Similar to diethyl ether, carbon disulfide is also commonly used as solvent in laboratory use for selenium, iodine, fats, resins, and asphalt with chemical formula CS2. The chemical is highly reactive and is strictly for professional use only.

The chemical is hazardous because it is flammable and can spark fire. The fume produced may also be carcinogen. Moreover, carbon disulfide is also toxic and can cause irritation to skin, eyes, and respiratory system. (Also read 7 Internationally List of Banned Toxic Chemicals to Avoid)

Other chemicals not allowed in high school are as follow

Here are more chemicals that’s not allowed in high school:

  1. Arsene
  2. Ethyl Bromide
  3. Lead Acetate
  4. PTC Paper

When learning about what are some examples of inorganic compounds and what is not, students and teacher must be aware of the chemicals they are going to get in contact to before using them. Indeed, there are 12 list of chemicals not allowed in high school.

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Post Date: Tuesday 28th, November 2017 / 04:15 Oleh :
Kategori : Applications