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Where does SEM come from ?
from azodicarbonamide
Chronology:
1
st
Nitrofurazone veterinary medicine use
But, subsequently (Spring 2003):-
2
nd
Azodicarbonamide-foamed plastic gaskets
3
rd
Azodicarbonamide-treated flour
4
th
Action of hypochlorite and heat/light on foods and food ingredients
.
Semicarbazide
`......presence (at ppb levels) in babyfoods is undesirable'
H
2
N-CO-N=N-CO-NH
2
Azodicarbonamide
Maybe 0.1% of the breakdown of ADC gives SEM
N
H
2
NH
O
C
NH
2