Guljag Industries Ltd. Colaba, Mumbai, Maharashtra

Vacuum salt is a white crystalline powder or soft lumps, free from visible contamination with clay, grit, extraneous adulterants and impurities. Guljag's vacuum salt is almost free from extraneous matter.

Soda ash has a tendency to absorb moisture from the atmosphere. The moist soda ash then starts absorbing atmospheric carbon dioxide. This phenomenon of absorption of moisture and carbon dioxide by soda ash is known as weathering. After weathering, soda ash is likely to contain appreciable moisture and sodium bicarbonate, but the total alkali content of the bag does not change. Soda ash has a tendency to cake when it comes in contact with moisture and, consequently, becomes lumpy.

It's used for purification of drinking water and wastewater treatment by settling of impurities by means of precipitation and flocculation.It helps in sizing of paper at neutral and alkaline pH, thus improving paper quality (reducing spots and holes and improving sheet formation and strength) and sizing efficiency.It is used for color fixing in Naphthol based dyes for cotton fabric.

Vacuum salt is not only an excellent alternative to solar salt in all applications, it is more beneficial because of its additional qualities. It can be used with advantage in many salting-out processes. It can also be used for the manufacture of cattle-licks, papad-khar, sal-ammoniac bars, iodized salt, etc.

It is also possible to replace a portion of the caustic soda in many pulp bleaching applications such as caustic extraction or hydrogen peroxide bleaching of mechanical or chemical pulps. However, the higher pH requirements of these applications may necessitate the continued use of some caustic soda.