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Flashcards in Uses Deck (17):
1

What are the primary purposes for alkylhalides?

They are used for solvents

2

What replaced carbon tetrachloride?

Now use 1,1,1-trichloroethylene

3

What replaced chloride and chloroform?

Now use methylene chloride because chloroform equals death

4

What are reagents important for?

Organic synthesis

5

Up until 1840, what was used for anesthetics?

Chloroform

6

What 5 things are used for anesthetics now?

Halothane, ethyl chloride, isoflurane, desflurane, and sevoflurane

7

What was freon invented for?

To replace ammonia and refrig. gas. Ammonia equals death

8

What's the harm of freons?

When released into atmosphere, it destroys ozone

9

What was freon 12 replaced with?

Replaced with low boiling hydrocarbons in aerosols

10

Where did freon 22 replace freon 12?

In cars and fridges

11

Freons with C-H bonds (HCFCs) are destroyed where?

Altitudes below stratosphere

12

Propane substitutes what?

Freon 11

13

What was used to fight Black Death from fleas?

Pesticides, arsenic in particular

14

In 1939, what was used for pesticide?

DDT, which is non toxic to mammals in small doses

15

What's wrong with a large amount of DDT?

Kills species

16

When was DDT banned in US?

1972. Still used in insect borne diseases

17

What pesticide is rarely used?

Chlorinated pesticides