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dodge1984

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Preparation of DNS (Dinitrosalycyclic Acid) solution
Different ingredients used for the preparation of DNS solution are as follows:
1). Distilled water 1416 ml
2). 3.5 Dinitrosalycyclic Acid 10.6 g
3). NaOH 19.5 g
The above ingredients were dissolved gently in water bath at 80¡ãC until a clear solution was obtained. Then the following chemicals were added.
4). Rochelle salt (sodium potassium tartrate) 300g¾ÆÊ¯Ëá¼ØÄÆ
5). Phenol (melted at 60¡ãC) 7.5 ml
6). Sodium meta bisulphate 8.3gÖØÑÇÁòËáÄÆ
After dissolving the above ingredients, the solution was filtered through a large coarse sintered glass filter and stored at room temperature in an amber colored bottle to avoid photo oxidation.
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