Answer / mukesh patel

residue on ignition is performed to determine the inorganic
substances.at 600-700 degree centigrate the organic
substances burnt and inorganic substaces remains.

Answer / bhupalreddy

Residue on ignition means at a define temp.
(about 600 deg C). how much matter driven off form your
sample means after ending the test you will get the residue
on ignetion all part of organic matter will removed and
only inorganic matter will present because we are finding
how much inorganic impurity present in sample.

Answer / swapna

Residue on ignition is useful to identification of inorganic substances present in the sample.while adding the sulfuric acid metals reacts with sulfuric acid to form their sulphates
.

Answer / k.sridhar

we will perform
this test to
determine the
inorganic
nonvolatile
impurities in given
sample in the
presence of
sulphuricacid

Answer / sandeep kale (toronto, canada)

ROI / Sulfated Ash Test is use to find out Inorganic Impurities.
At 600-800°c all the metal salts (Used as a catalyst in formation of Intermediates / API'S)(which are soluble) gets converted in to metal oxides (Insoluble and Highly Non volatile).
And final residue we get , of Metal Oxides which are Inorganic Impurities.
--

Answer / ravi sharma

we perform the residue on ignition to determine the inorganic impurities in organic substance

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