propylene glycol ( propylene glycol manufacturer, propylene glycol suppliers, propylene glycol usp, 1-methoxy-2-propanol, propylene glycol pg )'s specification is below, please check:
Acidity (ml) Volume Value of titrating consumed NaOH solution(0.01mol/L) ≤0.5
Relative Density (25) 1.035~1.037Chloride % ≤0.007Sulfate % ≤0.006Moisture % ≤0.2Firing Residue mg ≤3.5PPm Heavy metal PPm (unitPG) ≤ 5Oxidability ml Volume value of titrating consumed Na2S2O3 solution ≤0.2
Indentification Infrared absorbing spectrogram is in compliance with reference spectrogram.
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Propylene Glycol ( USP / BP / CP )