A naturally occurring salt used as a preservative and drying agent during mummification. It is a mixture of four salts that occur in varying proportions: sodium carbonate, sodium bicarbonate, sodium chloride and sodium sulfate. [Go to source
A naturally occurring desiccant composed of sodium carbonate and sodium bicarbonate. It could be found on the banks of the Wadi Natrun and at a few other sites in Egypt. It was a principal ingredient in the mummification process and in some temple rituals of purification.
Natron is a hydrated sodium carbonate mineral with the formula Na2(CO3)Â·10(H2O). In color it is white to colorless when pure, varying to gray or yellow with impurities. It has a specific gravity of 1.42 to 1.47 and a Mohs hardness of 1.