| NAME |
Diphylline
B. P. / E. P. / Diprophylline B. P. |
| CHEMICAL FORMULA |
C10H14N4O4 |
Molecular weight : 254.24 |
| CAS NUMBER |
479 - 18 - 5 |
| DESCRIPTION |
A white crystalline powder. |
| CHEMICAL SPECIFICATION |
TESTS |
SPECIFICATIONS |
| |
Solubility |
Freely soluble in water, slightly soluble
in alcohol. |
| |
Identification |
A, B, C and D are +ve. |
| |
Appearance of
solution |
5 % w/v solution is clear
and colourless. |
| |
Acidity or alkalinity |
NMT 0.4 ml of 0.01 M Sodium
hydroxide required
to change the colour to blue. |
| |
Related substances |
Any secondary spot obtained with the test
solution is not more intense than the spot obtain with
reference solution [a] [1 %] and at most one such spot
is more intense than the spot obtained with reference
solution [b] [0.2 %]. |
| |
Chlorides |
NMT 400 ppm. |
| |
Heavy metals |
NMT 20 ppm. |
| |
Loss on drying |
NMT 0.5 % |
| |
Sulphated ash |
NMT 0.1 % |
| |
Assay |
NLT 98.5 % and NMT 101.0 % on dried basis. |
| PACKAGING |
25 Kgs Blue HDPE Drum. |
| STORAGE |
Store in cool, dry place in
well-closed containers. |
| |
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