Zineb 
Zineb underwent decomposition, giving rise to ethylenethiuram mono- 
sulfide, ethylenethiourea, carbon disulfide and zinc sulfide (408, 1157). 
After storage of zineb in darkness, ethylenethiourea, ethylenethiuram mono- 
and disulfide, a trace of sulfur and one unidentified compound were ob- 
served (326). 
The zinc salt showed no degradation when exposed to sunlight for 
varying period up to 1 1/2 hours. In soil, degradation of zineb occurred 
but was not complete even after 45 days (709). 
S 
H Hi 
CH — — N CH, -N-C-SH CH, -NH 
2 2 2 
. Nes ae Na,CS, | <—— | + 20S, 
CH_—— vn” CH, -N-C-SH CH, -NH 
2 2 r ‘ai 
H H 
S 
Ethylene Thiourea f 0 poly E.r.M. +-8 
Nata H i 2 ¢ 
ia N-C-S-Na 
H 38 
— — — 4 
if N=C=S <—— cr are fa a rar 
a > 
CH, -N-C-S-Na CH.,-N-C 
: H H Nabam 2 Ss 
9 H 
OL 
& Ethylene thiuram 
.S monosulfide 
H p (B..T. Me) 
CH, -N=C=S CH .-N-C 
sapere nlan Pe 
CH,-N-C-SH CH, -N tA 
aul 2 Ns 
S 
yu 
S 
CH,,-N=C=S | at 
y RSH Ss oo tak th 
a 
Methyl Isothio- ee R-S-C-N-CH., 
cyanate H 
190 
