Polyethylene glycol

This special stuff comes from oil.

It helps many things in our world.

It can help keep old wood safe. It replaces water in the wood. This stops the wood from shrinking.

It helps protect old statues, too. It keeps the paint on clay soldiers. This stops the color from flaking off.

It is in some medicines. It is also in toothpaste. It even helps make big soap bubbles!

This stuff is very useful. It is in many things we use.

Polyethylene glycol is a useful substance. People call it PEG for short.

It comes from petroleum, which is a type of oil. PEG helps many different things work well.

It can protect very old objects. Scientists use it on wood found under the sea. PEG replaces the water in the wood. This stops the wood from shrinking or bending.

It also helps protect old statues. In China, clay soldiers have bright paint. The air can make the paint flake off. PEG helps keep the colors on the clay.

PEG is also used in medicine. It is a main part of some laxatives. These help people go to the bathroom. It is also used in some vaccines. It helps coat tiny oily bubbles in the medicine.

Some people may have an allergy to it. This can cause a bad reaction. Even so, it is used in many things like toothpaste and skin creams.

Polyethylene glycol is a very useful substance. Many people call it PEG for short.

This substance comes from petroleum. It is used in many different ways. It helps in medicine and in big factories. It is also used to protect very old things. PEG is a special kind of compound. It can be called PEO or POE too. The name changes based on how heavy the molecules are.

This substance works in many clever ways. In medicine, it can act as an excipient. An excipient is a helper ingredient in a drug. It helps the medicine work in your body. PEG is the main part of many laxatives. These help people go to the bathroom more easily. In some vaccines, PEG coats tiny oily bubbles. These bubbles are called lipids. The PEG layer helps keep the vaccine stable.

People have used PEG to save history for a long time. It is great for protecting old wood from the sea. When wood is pulled from water, it can shrink. PEG replaces the water inside the wood. This keeps the wood from warping or bending.

It also saves the colors on old statues. In China, the Terracotta Warriors have beautiful paint. The dry air can make the paint flake off quickly. A special PEG made in Germany helps save these colors.

Scientists have made many important discoveries with PEG. In 1984, two scientists won a Nobel Prize. Their names were César Milstein and Georges J. F. Köhler. They used PEG to fuse different types of cells together. This helped them make antibodies. PEG is also used in many modern tools. It is used in some parts of missiles for the Navy. It is even used in some types of ink for printers.

You might find PEG in your house every day. It is used in many skin creams. It is also found in your toothpaste. In toothpaste, it helps spread ingredients evenly. It is even used to make very large soap bubbles last longer. Some people must be careful with it, though. PEG can cause allergic reactions in some people. This is why doctors and regulators watch it closely. It is a tiny part of a very big world.

Polyethylene glycol, often called PEG, is a versatile polyether compound. It is derived from petroleum and is used in many different fields. You can find it in industrial manufacturing, medicine, and even in your own home. Depending on its molecular weight, it is also known by other names. Scientists call it polyethylene oxide (PEO) or polyoxyethylene (POE).

The chemical structure of PEG is written as H−(O−CH2−CH2)n−OH. This formula describes how the molecules are linked together. PEG is often used to create hydrogels. A hydrogel is a substance that can hold a large amount of water. These gels serve as a functional form for many medical uses. PEG is also used as a stabilizer in various chemical processes.

In the medical field, PEG acts as a vital excipient. An excipient is an inactive substance that helps a drug work correctly. It can be used in oral, topical, or parenteral dosage forms. PEG is the primary ingredient in many laxatives, such as Macrogol. These products are often named by their molecular weight, like macrogol 3350 or 6000. It is also used for whole bowel irrigation before surgeries.

Modern medicine has found even more complex ways to use PEG. It is used in the process called PEGylation. This involves attaching PEG to molecules like adenoviruses for gene therapy. This coating helps prevent the immune system from attacking the treatment. PEGylated lipids are also used in the Moderna and Pfizer–BioNTech SARS-CoV-2 vaccines. In these vaccines, PEG coats tiny oily bubbles called lipids. This coating helps keep the messenger RNA, or mRNA, stable inside the body.

However, PEG is not without risks for some people. It can trigger allergic reactions, including anaphylactic shock. In the United Kingdom, regulators issued an advisory after some individuals had reactions. The US CDC reported six cases of severe allergic reactions from over 250,000 vaccinations. One study found that 72% of random blood plasma samples contained anti-PEG antibodies. This suggests that many people may have developed an immune response to PEG even without medical treatment.

Archaeologists use PEG to protect history from disappearing. When waterlogged wood is salvaged from underwater, it can warp or shrink as it dries. PEG replaces the water inside the wood to keep it dimensionally stable. This method was used to conserve the 16th-century ship, the Mary Rose.

It is also used for the Terracotta Warriors in China. When these clay soldiers are unearthed, their lacquer and paint can flake off in minutes. A special PEG preservative from Germany helps keep these ancient colors intact.

Scientific history was also changed by PEG. In 1984, César Milstein and Georges J. F. Köhler won a Nobel Prize. They used PEG to fuse different types of cells together. This process creates hybridomas, which are used to produce antibodies. PEG is also used in biophysics to study ion channels. Because PEG molecules are spherical in water, they can block the flow of ions. This helps researchers understand how tiny channels in cells work.

Beyond medicine, PEG has many industrial and commercial roles. It is used in skin creams, personal lubricants, and even toothpaste. In toothpaste, it acts as a dispersant to keep ingredients like xanthan gum distributed. It is even used to make large soap bubbles last longer. In heavy industry, PEG is used in solid rocket fuel for Trident II missiles. It is also used in power plants to remove carbon dioxide from gas streams.