5

. , , ( 1:1), 5 .

CS2 (-, -), NaOH. CS2 . .

, , NaOH . . , , . , NaOH, , . , .

, , g .

SO2.

20 - 25% .

. , . , . , .

: 1 2 3 4 5 6 7 8 9

(Henselmann) ( . 1905), . ""; ( , 1950- .), - (1964).

( . 1922), . "" (1960), " - " (1970), " " (1981), " " (1989); " " (1966), " " (1973). - " ..." (1987).

( . 1926), . - (1967), , (1971). -144.