What it does

Delayed-action primary accelerator; its cure rate lies between CBS and TBBS. It is substituted in some markets because it can form nitrosamines.

Compatible rubbers

NRSBRBR

Typical properties

AppearancePBeige to brown flakes or powder
Melting point≥ 80 °C

P marked values are PubChem literature data (pure substance). Others are typical commercial specifications and vary by producer and grade [TO BE VERIFIED].

Typical dosage

0.5–1.5 phr [TO BE VERIFIED]

FAQ

Why is the use of NOBS declining?It is a morpholine derivative; during vulcanization it can form N-nitrosomorpholine, which is classified as a carcinogen. In Europe it has been largely replaced by TBBS and CBS.

Related guides

Choosing nitrosamine-safe accelerators

Looking to source NOBS in Türkiye? Let's talk about producer selection and samples.rubberchem.com.tr →

Sources: PubChem CID 7619 · General rubber chemistry literature · PubChem page

Same class

CBS
N-Cyclohexyl-2-benzothiazolesulfenamideCAS 95-33-0
TBBS
N-tert-Butyl-2-benzothiazolesulfenamideCAS 95-31-8
DCBS
N,N-Dicyclohexyl-2-benzothiazolesulfenamideCAS 4979-32-2
OTOS
N-Oxydiethylenethiocarbamyl-N'-oxydiethylenesulfenamideCAS 13752-51-7
TBSI
N-tert-Butyl-2-benzothiazolesulfenimideCAS 3741-80-8
CBBS
N-Cyclohexyl-N-butyl-2-benzothiazolesulfenamideCAS 3264-02-6