Why sulpuric acid only used to ROI but not used nitric acid
and some other acids?

Answer Posted / kalkode sridhar

H2so4 . Will
convert the all
inorganic
nonvolatiles in to
their sulphates .
Sulphates are more
stable at the
specified
temporature in ROI
test the other
acids .

Is This Answer Correct ?    14 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is definition of validation? which components are followed give detail?

1831


if content uniformity passing but dissolution varrying then what is next step?

390


in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?

348


Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.

2391


is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

1665






While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

2353


we can use expired sample for validation and analyst qualification?

303


Why use only methanol,used determinationof moisture content not use other solvents

883


how to select short coloum and long coloumn for new molecule

1820


Why potassium dichromate is used in calibration of uv?

1397


why we are using hexane in calibration of number of drop per mL

1172


How do we fix the sample concentaryion in hplc method development. What is the basis?

682


From where require to take the RLD sample?

282


what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

3188


why does used dry caffien in HPLC calibration?

1568