Chemical News and Journal of Industrial Science, Tomy 119-120Chemical news office., 1919 |
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Strona 10
... acid , tartrazine , and filter yellow . Picric acid , while having a satisfactory absorption , is unstable and as a consequence the early gelatin filters were made chiefly with tartra- zine , which is quite stable . Tartrazine , however ...
... acid , tartrazine , and filter yellow . Picric acid , while having a satisfactory absorption , is unstable and as a consequence the early gelatin filters were made chiefly with tartra- zine , which is quite stable . Tartrazine , however ...
Strona 24
... acid , until the amount of acid added exceeds the proportion of one molecule of acid to one of salt . The addition of more acid causes the appearance of an acid reaction . Apparently the aci - compound Lordship referred to the growing ...
... acid , until the amount of acid added exceeds the proportion of one molecule of acid to one of salt . The addition of more acid causes the appearance of an acid reaction . Apparently the aci - compound Lordship referred to the growing ...
Strona 24
... acids of Group I. , but very few are given with experimental data or with specific and adequate directions for their proper execution in the laboratory . The distillation method with phosphoric acid devised by A. A. Noyes ( Fourn . Am ...
... acids of Group I. , but very few are given with experimental data or with specific and adequate directions for their proper execution in the laboratory . The distillation method with phosphoric acid devised by A. A. Noyes ( Fourn . Am ...
Strona 24
... acid with acetic acid . The filtrate is then tested for borate in the usual manner . 2. A " prepared solution " is one which contains the acids in the form of their sodium salts . Such a solution may be obtained by boiling I grm . of ...
... acid with acetic acid . The filtrate is then tested for borate in the usual manner . 2. A " prepared solution " is one which contains the acids in the form of their sodium salts . Such a solution may be obtained by boiling I grm . of ...
Strona 25
... acid with acetic , add 10 cc . 36 per cent acetic acid in excess and 5 cc . 2N CaCl2 . Filter . Residue may consist of CaC204 , | Filtrate may contain PO4 , AsO4 , Ca , and an CaF2 , and CaSO4 . Divide into two equal portions . Test for ...
... acid with acetic , add 10 cc . 36 per cent acetic acid in excess and 5 cc . 2N CaCl2 . Filter . Residue may consist of CaC204 , | Filtrate may contain PO4 , AsO4 , Ca , and an CaF2 , and CaSO4 . Divide into two equal portions . Test for ...
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