Fungicides

Question 1

Fungicides are chemicals used to prevent or treat what?

Answer 1

Fungal infections in plants

Question 2

Do fungicides generally have a low or high toxicity to animals if properly used?

Answer 2

Generally low toxicity

Question 3

What fungicide is used as a wood preservative to protect lumber from fungal rot and wood-boring insects?

Answer 3

Pentachlorophenol (PCP)

Question 4

What is the most toxic route of exposure of pentachlorophenol, especially for newborn animals?

Answer 4

Dermal exposure

Question 5

What are 3 sources of pentachlorophenol?

Answer 5

• Inhalation of toxic amounts from treated walls in sheds and barns
• Licking wood treated with PCP
• Ingestion of contaminated feeds or water with spills of PCP

Question 6

What is a chlorinated hydrocarbon insecticide and fungicide?

Answer 6

Pentachlorophenol (PCP)

Question 7

Is pentachlorophenol soluble in water?
Oils?
Organic solvents?

Answer 7

• Water: Not very soluble
• Oils: Yes
• Organic solvents: Yes

Question 8

Is pentachlorophenol volatile?

What can it give off?

Answer 8

• Yes

- Toxic vapors in toxic concentration especially in high ambient temperature

Question 9

Is pentachlorophenol stable in the environment?

Why?

Answer 9

• No

- Not persistent in water, sewage or soil due to bacterial decomposition

Question 10

Pentachlorophenol is irritating to what 3 areas of the body?

Answer 10

• Mucous membranes
• Respiratory tract
• Skin

Question 11

Older preparations of pentachlorophenol contained what which are carcinogenic and teratogenic?

Answer 11

Dioxins

Question 12

The acute oral or dermal LD50 of pentachlorophenol in domestic animals ranges from what?

Answer 12

100 to 200 mg/kg

Question 13

The chronic toxicity range of pentachlorophenol is what?

Answer 13

40-70 mg/kg