SPECIFICATION OF GLYCERINE IP
 
Sr.
Tests
IP
USP min 99.5%
1 Assay Glycerol % min 98-101 99.5 (anhydrous basis)
2 Specific Gravity 1.249 at 25°C min
3 Ash, %max 0.01 0.01
4 APHA Clour, max

20.0

5 Arsenic, ppm max
6 Copper, ppm
7 Heavy Metals as Lead, ppm max 5.0 5.0
8 Iron, ppm max 4.0
9 Lead, ppm max (as Pb)
10 Chlorides, ppm max 25.0 10.0
11 Sulphates, ppm max 30.0 20.0
12 Alkalinity / Acidity (as Na2O) Passes
13 Total Alkali
14 FA & Ester % as Na2O, max 0.025 0.031
15 Acraldehyde and Glucose
16 Aid & Reducing Sub ppm, ppm, max 5.0
17 Colour Lovibond 51/4" cell (Y+R)
18 Chromatographic Punity Passes
19 Organic Volatile Impurities Passes
20 Water % max 2.0 0.50
21 Chlorinated Compound, %max 0.003
22 Identification TPT TPT
23 Colour Feric Chloride Passes TPT
24 Refractive Index at 20 C min 1.470 - 1.475
25 Glycols & related substance Absent
26 Sugars Absent
 

 
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