–

oub y

46

.

4 6 3

1,2,4

bis(4,6

2

5 1,2,4

u

47

Abbreviation

– –100

CDH= Central Drug House

48

.

4

2 20

2 2

2 2

2 20

4

2 2 3 2

4

49

2

2

2

43 145

2 2

.

2

3.0

3 3

1.03 3

.

50

2

2

143

4 2,

2 2 2

2.

143 2

2

. .1.

,

good .

2

2

as sulph

51

.1 2

105 3

, ˚C

2

2.6

3.2

3.8

4.4

5

0.6 0.8 1 1.2 1.4 1.6

NH4

Sr

52

method based on the Rayleigh’s scattering law was also used to

fourth power of the wavelength (λ) [136

between log A and log λ .2 25

3

Rayleigh’s law is indicative of spectrum due to

soluble MnO2,

easurements

desired temperature with an accuracy of ± 0.5 ˚C. The kinetic studies were carried out

2 4

53

.2 Plots of log A versus log λ ( 25

3, ˚C .

-0.72

2.54 2.59 2.64 2.69 2.74

λ

54

,

Beer’s law.

uv v –

. 2

5 3

2

.

’s

2 105 3

1.6 104 3

.

2 . 4,

2

extrapolation. This confirms the validity of Beer’s law in

2.

2 4 .

2

4

2.

55

2 6.05 3

30 ˚C .

0

0.2

0.4

0.6

0.8

1

1.2

300 360 420 480 540 600 660

56

.4 Beer’s 2.

0

0.6

1.2

1.8

0 0.6 1.2 1.8

1052

3