FIELD: chemistry.
SUBSTANCE: invention relates to analytic chemistry, namely, to method of obtaining material based on cellulose oxidation product, used in production of reactive indicating papers or for concentration of heavy metals from solutions during their analytic determination. 2,3-dialdehydecellulose is processed with equivalent quantity of aminoguanidine carbonate. Reaction is realised in hydrochloric acid medium at temperature higher than 50°C with following neutralisation by caustic at pH 8-9 and heating in accordance with schedule 
. Formed 2,3-diguanidylhydrazone cellulose is filtered, washed with distilled water till neutrality of washing waters. Drying in vacuum-exsicator is carried out above granulated caustic potash.
EFFECT: proposed method is simple and harmless.
1 ex, 3 tbl
| Title | Year | Author | Number |
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