Chemical News and Journal of Industrial Science, Tomy 137-138Chemical news office., 1928 |
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Strona 388
... sulphur dioxide may be either pyrites or mineral sulphur , the choice being governed by economic factors , but the use of either is dependent on the necessity of keeping the sulphite cooking liquor free from compounds of the element ...
... sulphur dioxide may be either pyrites or mineral sulphur , the choice being governed by economic factors , but the use of either is dependent on the necessity of keeping the sulphite cooking liquor free from compounds of the element ...
Strona 389
... sulphur dioxide and about 1.1 per cent . of lime , is used in a cook lasting from 16 to 24 hours and reaching a maximum temperature of 185 ° C. It is possible to de- crease this time greatly , viz . , to 8 or 9 hours , as in the quick ...
... sulphur dioxide and about 1.1 per cent . of lime , is used in a cook lasting from 16 to 24 hours and reaching a maximum temperature of 185 ° C. It is possible to de- crease this time greatly , viz . , to 8 or 9 hours , as in the quick ...
Strona 293
... sulphur dioxide was ex- pressed as the unsaturation . Still another sample was completely hydrolysed by boil- ing ... sulphur dioxide . Increase of the volume of acid to olefine increased the alkyl sulphuric acid but did not increase the ...
... sulphur dioxide was ex- pressed as the unsaturation . Still another sample was completely hydrolysed by boil- ing ... sulphur dioxide . Increase of the volume of acid to olefine increased the alkyl sulphuric acid but did not increase the ...
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