Impact of N,N-Methylene-bis-Morpholine on the Preservation of Natural Rubber Latex

Table 3

Optimized formula of concentrated NRL preservation system.

Sample	Ammonia (%)	MBM (%)	Potassium laurate (%)
C1	0.7	—	0.04
C2	0.15	0.3	0.04
C3	0.15	0.3	0.08
C4	0.25	0.3	0.04
C5	0.25	0.3	0.08
C6	0.15	0.35	0.04
C7	0.15	0.35	0.08
C8	0.25	0.35	0.04
C9	0.25	0.35	0.08

Note. “—” denotes no addition; the dosage of the preservative is measured by the wet weight of latex.