A

FORMULA:  C12 H14N2O3S3

F .Wt : 330 .6

B

                                              SPECIFICATIONS

1

Appearance

Reddish violet crystals

2

IR spectrum

To match the control curve

3

UV Vis spectrum

To match the control curve

4

Assay ( by UV absorption) 0.005 gm /l in methanol

 478 to 482 nm 1.12 to 1.24

5

Absorbance  at peak 0.005 g/l water maximum peak

478 to 482 nm 0.517 to 0.573

6

 Melting point

238 to 239

8

Solubility:

1. gm/100ml ethanol
2. gm/100 ml methanol
3. gm/ 100ml DW
4. gm/100 ml acetone

Cleat no residue
Clear no residue
Clear no residue
0.06% insoluble max

9

Absorbance at 478 nm ( 0.0025 g/l in acetone )

Max : 1.23

10

UV Vis absorbance 0.1 g/lit ethanol
Absorbance   At410 -412 nm
                       At 510 nm
                       At 540 nm
                       560-700 nm
0.005 g/lit ethanol
Absorbance at 294 – 300 nm

1.65 to 1.90
0.75 to 1.00
Max : 0.025
Max : 0.003.

0.12 to 0.2

C

Quantity of sample required for test

10 gms

D

Mode of packing

To be packed in wide mouthed PE container.