Chem 232 Liquid Liquid Extraction of P-Bromoanaline

Compound

MW (g/mol)

Used

moles

Physical and Safety Data

p-Bromoanaline

172.03

1.00 g

5.81 x 10-3 mols

Irritant in case of skin/eye contact, hazardous in case of ingestion/inhalations.

MP= 66 C; BP= decomposes

Hydrochloric Acid (HCl)

36.46

3 x 30 mL

0.396 mols

Highly toxic, corrosive (3M solutions). Dispose as aqueous waste.

Density= 1.20 g/M

Phenantherene*

178.23

2.00 g

1.12 x 10-2 mols

Toxic, hazard to aqueous environment.

MP= 98-100 C;  BP= 340 C; density= 1.063 g/M

Dichloromethane

(DCM)

84.93

100 mL

1.56 mols

Toxic, dispose in halogen waste.

BP= 39 C, d= 1.3255 g/mL

Anhydrous Sodium Sulfate

142.04

6.209 g

4.37 x 10-2 mols

Irritant, hydroscopic.

MP= 884 C, d=2.68 g/mL

Sodium Hydroxide

40.00

30 mL

1.59 mols

Toxic, corrosive; 3 M. Dispose in basic aqueous d= 2.13 g/mL

Compound

MW (g/mol)

Used

moles

Physical and Safety Data

Phenanthrene

178.23

1.0 g

0.0056 mols

Toxic, hazardous to aqueous environment. Harmful if swallowed

MP= 99-101 C, BP= 346 C, d= 1.063 g/mL

Ethanol

46.07

20 mL

0.340 mols

Flammable liquid, irritant. Dispose as non-halogenated waste. BP= 78 C, d= 0.790 g/mL.

Water

18.02

0.271 g

1.50 x 10-2 mols

Can be hazardous depending on contents. MP= 0C, BP= 100 C; d= 1.00 g/mL

Compound

MW (g/mol)

Isolated

moles

% recovery

Crude phenanthrene

178.20

1.059 g

5.94 x  10-3 mols

53%

Recrystallized Phenanthrene

178.23

1.101 g

6.18 x  10-3 mols

110%

Aqueous precipitate (p-bromoanaline salt)

172.03

0.271 g

1.57 x  10-3 mols

28%

Sample Determined

Observed Melting Range

Lit. Melting Range

Identification

Component from solution A

55°C

60-64°C

p-Bromoanaline

Component from solution B

90 -93°C

111-113°C

m-Toluic Acid

Crude phenanthrene

77-87°C

98-101°C

---

Recrystallized phenanthrene

74-85°C

98-101°C

---

Solubility

Compound

Ethanol

Hexanes

Toluene

Water

cold

hot

cold

hot

cold

hot

cold

Hot

Anthranilic acid

s

V

i

𝛿

i

V

𝛿

s

Phenanthrene

𝛿

s

s

V

V

V

i

i

m-Toluic acid

𝛿

V

s

V

V

V

i

i

p-Bromoaniline

𝛿

s

𝛿

V

s

V

i

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