RAW MATERIAL ANALYSIS
REPORT?b style='mso-bidi-font-weight:normal'>70R-BORIC
Chemical
Name:?BORIC ACID???????????????????????RM
Control No.:__________
Supplier: __________________________??? ????????????Qty.
Received:____________
????????????
Lot No.: ___________________________?? ????????????Date
Received:____________
Expiry Date:________________________
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PARAMETERS
USP 25
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STANDARD
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RESULT
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REMARKS
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Description
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Colorless, odorless scales of a somewhat pearly
luster, or crystals, or white powder that is slightly unctuous to the touch.
Is stable in the air.
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Solubility
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1g dissolves completely in 10mLog boiling alcohol
and in 25mL of water.
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Identification
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Borate<191> To 1mL of a borate solution
acidified with HCl, add 4 drops of iodine TS and 4 drops of polyvinyl alcohol
solution (1 in 50).?An intense blue
color is produced.
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Assay
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Dissolve 2g in 100ml of a mixture of equal volumes
of glycerin and water, previously neutralized to phenolphthalein TS.?Titrate with 1N NaOH, discharge the pink
color by the add? of 50ml glycerin, neutralize to phenolphthalein TS, and
continue titration until the pink color reappears.?Each ml of 1N NaOH = 61.83mg H3BO3; 99.5
?100.5% ?/span>
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CALCULATIONS:???
??????Wt.
of Sx?=???????????????????????????Vol. of NaOH used?=
??????Act.
N of NaOH?=??????????????? ??????Theot.?N of NaOH
=
QC DISPOSITION :???????? [????? ]?PASSED???????????[????? ]
REJECT
Analyzed by:_____________________????? ??????Reviewed
by:______________________
Date:____________________________??????????Date:____________________________??????????
Revised September, 2004 by lo??????? ??????Approved
by:_____________________?
