Total alkali content

99.2% min

99.5%

Chlorides (NaCl)

0.7% max

0.36%

Sulphate(SO₄)

0.03% max

0.017%

Iron(Fe₂O₃)

0.004% max

0.0019%

Water insoluble matter

0.04% max

0.005%

Lgnition loss

0.8% max

0.5%

Bulk density

0.9g/ml min

0.94g/ml

Particle size

180um             sieve remaining 70%min

92.6%