Himalayan salt is chemically similar to� table salt. Analysis of a range of Khewra salt samples showed them to be between 96% and 99%� sodium chloride, with varying amounts of trace minerals such as calcium, iron, zinc, chromium, magnesium and sulfate, all at safe levels below 1%.� Some salts mined in Pakistan are not suitable for food or industrial use without purification due to impurities.� Some salt crystals from this region have an off-white to transparent color, while the trace minerals in some veins of salt give it a pink, reddish, or beet-red color.
Nutritionally, Himalayan salt is also similar to common table salt, though it lacks the beneficial iodine that is added to commercial iodized table salt.