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3-Hydroxytyramine hydrochloride 62-31-7 C8H11NO2.HCl
items |
standard |
result |
characters |
||
appearance |
white or almost white, crystalline powder |
conform |
solubility |
freely soluble in water, soluble in ethanol (96%), sparingly soluble in acetone and in methylene chloride. |
conform |
identification |
||
a |
absorption maximum at 280nm |
conform |
specific absorbance at the absorption maximum 136 to 150 |
147 |
|
b |
infra-red absorption spectrum should be identical with contrast |
conform |
c |
it gives reaction (a) of color |
conform |
d |
it gives reaction (a) of color |
conform |
e |
it gives reaction (a) of chlorides |
conform |
tests |
||
appearance of solution |
the solution is clear and not more intensely coloured than reference solution b6 or y6 |
conform |
acidity or alkalinity |
should be conform |
conform |
related substance |
unspecified impurities: nmt 0.1% |
conform |
disregard limit: nmt 0.05% |
conform |
|
total of other impurity: nmt 0.20% |
0.15% |
|
heavy metals |
nmt 20ppm |
conform |
loss on drying |
nmt 0.5% |
0.17% |
sulphated ash |
nmt 0.2% |
0.05% |
residual solvents |
should be conform |
conform |
assay |
99.0~101.0% (anhydrous substance) |
99.4% |
conclusion |
comply with bp 2009. |
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