Orange silica gel

Indicating silica gel, spherical beads. This product is a healthier replacement for the the indicating "blue gel". Depending on its moisture content, orange silica gel changes its colour from orange to colourless.

Orange silica gel can be blended with non indicating silica gel, e.g. at a weight ratio of 1:5.

Regeneration temperature should not exceed 140°C in order not to damage the indicator (phenolphtaleine).

The colour change from orange to translucent occurs at 5 - 9% RH, so it's not indicating saturation of the silica gel. There is a lot of adsorption capacity remaining after the colour change has taken place.

Bulk density:
0,75 g/cm³

Internal surface area :
800 m²/g,

Pore volume:
0,42 ml/g,

Average pore diameter :
25 A

pH (10 % aqueous suspension)
2,0