Assertion: cryolite's weight | /r/HasProperty | combined as sodium fluoride
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Source sentences:
text: The carbonate liquor which is introduced contains lZ-parts of sodium ion per 1000 parts of water, 'a small part of the sodium being present in combination with some residual fiuorine, being calculated as about 0.75 part by weight of sodium combined as sodium fluoride, although there may be a small amount of residual, unprecipitated cryolite remaining in solution in any such carbonation process.