CBS (CZ), TBBS (NS) and MBS (NOBS) are the three most common sulfenamide delayed-action accelerators. This guide compares cure kinetics, scorch safety and applications to help you choose.

Cure & scorch profile

CBS gives moderate scorch delay and good cure; TBBS offers faster cure and slightly less scorch safety; MBS (NOBS) cures fastest but has shorter scorch time—handle with care due to nitrosamine concerns.

Comparison at a glance

See the selection table below for active content, cure speed, scorch safety, typical dosage and main applications.

Selection tips

For tire treads and general molded goods, CBS or TBBS are standard. For fast-curing profiles needing shorter cure time, MBS may be considered where regulations allow. Always pair with a thiuram/dithiocarbamate secondary accelerator when higher activity is needed.

TDS / Technical Data Sheet

SDS Highlights

All sulfenamides: follow GHS hazard statements on individual SDS. Avoid dust inhalation; store cool and dry, away from acidic/alkaline materials.

COA Sample