Xanthan Gum is also known as XC Polymer (Xanthan gum biopolymer). It is a polysaccharide secreted by the bacterial genus Xanthomonas Campestris. Xanthan Gum is an anionic polymer with tolerance for salinity and fair tolerance for hardness ions. It is a finely powdered material that can vary in the amount of residual bacteria debris and the ease with which it disperses into water. It degrades at around 200 to 250F. It fails when pH or hardness is at an extreme level.
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The material shall be in the form a free flowing powder, free from lumps and visible impurities
As per requirement
Moisture Content at 105 ± 2 0C, percent by mass
Prepare 0.5% (w/v) Solution in Distilled Water containing 4% (w/v) of Sodium Chloride in Hamilton Beach Mixer.Adjust pH in the range 8 – 9 and determine rheological properties at 24 ± 2 0C.
1. Apparent Viscosity in Centipoise
2. Gel0 in lbs/100 sq. ft 3. “n” value at 200 and 100 rpm
15 – 25
5.0 (Minimum) 0.4 (Maximum)
17.5 13 0.26
Cross Linking Properties :
To 495 ml of Distilled Water, add 5 ml of 3% (w/v) Solution of Calcium Chloride, add 0.5% (w/v) of the Sample, while stirring in HBM for 20 minutes. Add to it 0.2% (w/v) Chrome Alum Powder and stir further for 10 minutes. Adjust pH 8 - 9 by adding 1N – NaOH and determine rheological properties at 24 ± 2 0C