What is DDT chemical used for?

Dichlorodiphenyltrichloroethane (DDT) is an insecticide used in agriculture. The United States banned the use of DDT in 1972. Some countries outside the United States still use DDT to control of mosquitoes that spread malaria.

What is the chemical formula for DDT?

C14H9Cl5DDT / Formula

What type of compound is DDT?

DDT, abbreviation of dichlorodiphenyltrichloroethane, also called 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane, a synthetic insecticide that belongs to the family of organic halogen compounds and is highly toxic toward a wide variety of insects as a contact poison that apparently exerts its effects by disorganizing …

What are 3 uses of DDT?

DDT was used to control malaria, typhus, body lice, and bubonic plague. DDT was a key element of malaria eradication in Italy and the United States. It was used to manage an epidemic of typhus in Italy and Germany during 1943-44 (1, 2).

What is DDT in food chain?

Dichlorodiphenytrichloroethane (DDT) is an organochlorine insecticide with a broad spectrum of activities such as the control of pest in forest and on agricultural crops, household pests, vector-borne diseases like malaria, typhus, etc.

What is the concentration of DDT in seawater?

For DDT and metabolites the criterion to protect saltwater / aquatic life as derived using procedures other than the Guidelines is 0.0067 ugl as a 24-hour average and the concentration should not exceed 0.021 ug/1 at any time.

What is DDT 12 chemistry?

It is also called 1,1,1-trichloro-2,2-bis(p-chlorophenyl) ethane, and is a synthetic insecticide which belongs to the family of organic halogen compounds. Complete answer: DDT is a colourless, tasteless (at standard conditions for temperature and pressure, STP) and almost odourless organochlorine.

What is DDT 10?

DDT, or dichlorodiphenyltrichloroethane, is a chemical compound with the formula C14H9Cl5. Under standard conditions for temperature and pressure (STP), this chemical compound exists as a colourless and tasteless crystalline solid.

What is DDT made of?

Technical DDT is made by condensing chloral hydrate with chlorobenzene in concentrated sulfuric acid (Metcalf 1995). It was first synthesized in 1874, but it was not until 1939 that Müller and his coworkers discovered its insecticidal properties (Metcalf 1995).

Why does DDT increase up the food chain?

When an animal consumes food having DDT residue, the DDT accumulates in the tissue of the animal by a process called bioaccumulation. The higher an animal is on the food chain (e.g. tertiary consumer such as seals), the greater the concentration of DDT in their body as a result of a process called biomagnification.

How does DDT enter food chain?

Answer and Explanation: DDT enters the food chain after it gets spread, either from getting on insects, plants, or water runoff.

How does DDT get into water?

In surface water, DDT will bind to particles in the water, settle, and be deposited in the sediment. DDT is taken up by small organisms and fish in the water. It accumulates to high levels in fish and marine mammals (such as seals and whales), reaching levels many thousands of times higher than in water.

What concentration of DDT did the estuary have in it?

In an estuary off Long Island Sound, Rachel Carson learned that in the water the DDT measured only three parts per trillion (that’s only 0.000003 ppm!). That was so low that it didn’t seem dangerous at all.

What is DDT 12?

Where is DDT still used?

DDT is still used today in South America, Africa, and Asia for this purpose. Farmers used DDT on a variety of food crops in the United States and worldwide. DDT was also used in buildings for pest control.

What happens to the concentration of DDT as it moves through a food chain?

Answer and Explanation: As Dichlorodiphenyltrichloroethane (DDT) moves up the trophic levels in food chains, or food webs, its concentration increases.

Which organism is likely to consume the highest DDT concentration?

The highest amount of DDT and derivatives residues were found in carnivore fish species, C. striatus which is the top predator of food web.

Which organism contains the most DDT?

Worms, grasses, algae, and fish accumulate DDT. Apex predators, such as eagles, had high amounts of DDT in their bodies, accumulated from the fish and small mammals they prey on.

Where is the highest concentration of DDT found?

The highest amount of DDT and derivatives residues were found in carnivore fish species, C. striatus which is the top predator of food web. In contrast, the lowest residue levels of DDT and derivatives were found in the omnivores, P. gonionotus.

What does DDT do in water?

What is the chemical name of DDT?

of the insecticide DDT (1,1,1-trichloro-2,2,-bis[p-chlorophenyl]ethane, or dichlorodiphenyltrichloro-ethane). It had long been realized that the only effective way of controlling malaria was to eradicate the anopheline mosquitoes that transmit the disease.

What is the melting point of DDT?

Pure DDT is a colourless, crystalline solid that melts at 109° C (228° F); the commercial product, which is usually 65 to 80 percent active compound, along with related substances, is an amorphous powder that has a lower melting point.

Why is DDT still used today?

Regulation Due to Health and Environmental Effects. After the use of DDT was discontinued in the United States, its concentration in the environment and animals has decreased, but because of its persistence, residues of concern from historical use still remain.

How is DDT converted to DDE?

DDT exposure can occur by eating, breathing, or touching products contaminated with DDT. DDT can convert into DDE, and both persist in body and environment. In the body, DDT converts into several breakdown products called metabolites, including the metabolite dichlorodiphenyldichloroethene (DDE).