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TURUNAN PIRAZOLON KELOMPOK 8

aomk pirazolon afril

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Page 1: aomk pirazolon afril

TURUNAN PIRAZOLON

KELOMPOK 8

Page 2: aomk pirazolon afril

N

N

C6H5

CH3

CH3H

O

Antipirin

N

N

C6H5

CH3

CH3N

O

H3C

H3C

Amidopirin

N

N

C6H5

CH3

CH3N

O

H3C

CH2SO3Na

Metampiron

N

N

C6H5

CH3

CH3HC

O

H3C

CH3

I sopropilantipirin= I sopropylphenazone

TURUNAN PIRAZOLON

Page 3: aomk pirazolon afril

ANTIPIRIN

Penetapan Kadar1. N- total/ Kjeldahl metode destruksi2. Gravimetri

dasar: bobot konstanI2 ke C no.4 monoiodoantipirin

standar: selisih <0.5 mg/gram endapan3. Iodometri dasar: reaksi redoks

N

N

C6H5

CH 3

CH 3H

O

Antipirin

Page 4: aomk pirazolon afril

NN

C6H5

CH3

CH3H

O + I2

CH3COONa NN

C6H5

CH3

CH3I

O+ HI

I2 sisa + 2 Na2S2O3 2 NaI + Na2S4O6

1 mol antipirin ~ 1 mol I2 ~ 2 atom I- ~ 2 e-

valensi = 2

Indikator : CHCl3 I2 + CHCl3 ungu

Titran : Na2S2O3 TA : tidak berwarna

Page 5: aomk pirazolon afril

4. Polarografi (berdasarkan arus difusi) Dasar : Penitroan dme nitrosoantipirin

5. Kolorimetri1. p-DAB/H2SO4 + H2O pink merah (λ = 573 nm)2.NaNO2 + HCl hijau (λ = 382 nm)

Page 6: aomk pirazolon afril

Reaksi kolorimetri

N

N

C6H5

CH 3

CH 3

O

HONO + H+ O

H

H

NO NO+ + H2O

N

N

C6H5

CH 3

CH 3

O+ NO+

N

N

C6H5

CH 3

CH 3

O

NO

-H+ N

N

C6H5

CH 3

CH 3

O

NO

Nitosoantipirin

Page 7: aomk pirazolon afril

Penetapan Kadar1. N-total/Kjeldahl2. Gravimetri amidopirin + basa molekul

Ekstraksi CHCl3 + HCl

garam

AmidopirinN

N

C6H5

CH 3

CH 3

O

N

CH3

H3C

Page 8: aomk pirazolon afril

3. Asidimetridasar : Rx netralisasi

Amiopirin + HClpelarut : etanol

4. TBAdengan HClO4pelarut : asam asetat glasial

Page 9: aomk pirazolon afril

5. Kompleksometri dasar : Amidopirin membentuk komplek dg

Cd(NH4)(SCN)4

Titran : EDTA

6. Bromatometri (titrasi langsung) Dasar : oksidasi amidopirin titran : KBrO3

KBrO3 + HCl bromin + amidopirin

Page 10: aomk pirazolon afril

KBrO3 + HCl bromin

+ amidopirin

TA : amido habis, tersisa warna kekuningan dari bromin (autoindikator)

Indikator : a. CHCl3 - ->CHCl3 + Br2coklatb. Autoindikator (Br2)

Page 11: aomk pirazolon afril

7. Kolorimetridasar : Rx diazokopling p-nitroanilin + NaNO2 garam diazonium

+ amidopirin + FeCl3

violet (λ = 570

nm)

Page 12: aomk pirazolon afril

8. Spektrofotometri pelarut : etanol

Page 13: aomk pirazolon afril

c. TBA Dengan HClO4

FI Edisi II diambil dengan HCl + CHCl3

d. Kompleksometri Membentuk komplek dengan Cd(NH4)(SCN)4

e. Bromatometri Dasar : oksidasi amidopirin

+ KBrO3 + HClf. Kolorimetri

Amidopirin + hasil diazotasi p-nitroanilin kuning + FeCl3 violet

l = 570 nm

mm

asam/netral

Page 14: aomk pirazolon afril

g. Spektrofotometri Dalam etanol, l maks = 270 nm

III.

Metampiron

N

N

C6H5

CH3

CH3N

O

H3C

CH2SO3Na

Page 15: aomk pirazolon afril

a. Iodimetri

NaHSO3 + I2 NaHSO4 + 2 HI

BE = BM/2Metampiron FI III dan IV : Iodimetri

b. Spektrofotometri Dalam etanol, lmaks = 235 nm

N

N

C6H5

CH3

CH3N

O

H3C

CH2SO3Na

HCl 0,02 NN

N

C6H5

CH3

CH3HN

O

CH2SO3Na

+ H2O + HCHO + Na2HSO3

H2O

Page 16: aomk pirazolon afril

c. Polarografid. Fluorometri

pembentukan p-benzoquinon dikloraminae. Kolorimetri

Kuning, l maks = 403 nm

N

N

C6H5

CH3

CH3N

O

H3C

CH2SO3Na

N

N

C6H5

CH3

CH3HN

O

CH3

HCl 2 N

H+ , H

NO 2

H2O

N

N

C6H5

CH3

CH3N

O

N

H3C

O

NH4OH

+ NaCl+ HOCH2SO3H

N

N

C6H5

CH3

CH3N

O

N

H3C

OH

Page 17: aomk pirazolon afril

IV.

Isopropilantipirin= Isopropylphenazone

+ FeCl3 orange Lieberman test biru merah TLC fase diam Silika Gel G

fase gerak metanol : amm pekat 100 : 1,5

Rf 71

N

N

C6H5

CH3

CH3HC

O

H3C

CH3

100oC

H2O

Page 18: aomk pirazolon afril

a. HPLCKolom : ODSFase gerak : isopropilalkohol : as formiat : KH2PO4 0,1 M (540 : 1 : 1000)

b. Spektroskopi UVAsam 240 nm

Alkali 245 nm, 265 nm