LIQUID-LIQUID EXTRACTION
 

 

 

 

 


FAMU-FSU College of Engineering: Unit Operations Lab

Materials

 

In our lab one may come across n-heptane and ethanol.  They are listed below with their relevant information that was obtained from Material Safety Data Sheets. 

 

N-HEPTANE

 

CAS Number: 

 

142-82-5

Molecular Formula:

 

C7H16

Synonyms: 

 

heptane, dipropyl methane, and heptyl hydride

Physical Properties:

 

 

 

 

Colorless liquid with a melting point of –91°C and a boiling point of 98 °C.  This chemical is highly flammable with an autoignition temperature of 222 °C.

 

Symptoms:

 

 

Skin:

Mild irritation, redness and pain.

 

Eyes: 

Irritation.  Splashes may produce redness and pain.

 

Inhalation: 

 

Irritation of respiratory tract.  Aspiration into lungs can produce severe lung damage.

 

Ingestion: 

 

Nausea and abdominal pain.

 

First Aid Measures:

 

Skin:

Wash skin with soap and water for at least 15 minutes while removing contaminated clothing.

 

Eyes:

Flush eyes with water for at least 15 minutes while lifting the upper and lower eye lids periodically.  Seek medical attention!

 

Ingestion: 

Aspiration hazard.  DO NOT induce vomiting.  Seek medical attention!

 

 

ETHANOL

 

CAS Number: 

 

64-17-5

Molecular Formula:

 

C2H5OH

Synonyms: 

 

Ethyl alcohol, grain alcohol, fermentation alcohol, and absolute alcohol.

 

Physical Properties:

 

 

 

 

Colorless liquid with a melting point of –130 °C and a boiling point of 78 °C.  This chemical has an autoignition temperature of 683 °F.  Avoid any oxidizing agents.  Store in a tightly closed container.

 

Symptoms:

 

 

Skin:

Mild irritation, redness and pain.

 

Eyes: 

Irritation.  Splashes may produce redness and pain.

 

Inhalation: 

 

 

Irritation of respiratory tract.  Aspiration into lungs can produce severe lung damage.

 

Ingestion: 

 

Nausea and abdominal pain.

 

First Aid Measures:

 

Skin:

Wash skin with soap and water for at least 15 minutes while removing contaminated clothing.

 

Eyes:

Flush eyes with water for at least 15 minutes while lifting the upper and lower eye lids periodically.  Seek medical attention!

 

Ingestion: 

Aspiration hazard.  DO NOT induce vomiting.  Seek medical attention!

 

 

 

Any further information on MSDS’s can be found at the following website provided by Oxford University:

The Physical and Theoretical Chemistry Laboratory

 

 

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Last modified: November 26, 2001

Created by Team #2