CAS No.

133-14-2

TSCA Status

listedon inventory

Active oxygen content peroxide

4.21%

EINECS/ELINCS No.

205-094-9

Molecular weight

380.0

Concentration

2.06-2.15%

DCBPis a 50% formulation in paste form.

Applications

DCBPis a monofunctional peroxide which is used for the crosslinking of silicone
rubber. Safe processing temperature: 75°C (rheometer ts2 > 20 min.). Typical
crosslinking temperature: 90°C (rheometer t90 about 12 min.).

Thermal stability

Organic peroxides are thermallyunstable substances, which may undergo self-accelerating decomposition. The
lowest temperature at which self-accelerating decomposition of a substance in
the original packaging may occur is the Self-Accelerating Decomposition
Temperature (SADT). The SADT is determined on the basis of the Heat
Accumulation Storage Test.

SADT 60°C (140°F)

Method The Heat Accumulation Storage Test is a recognized test method forthe

determinationof the SADT of organic peroxides (see Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria - United Nations, New York and Geneva).

Storage

Dueto the relatively unstable nature of organic peroxides a loss of quality can be
detected over a period of time. To minimize the loss of quality, Do Sender Chem
recommends a maximum storage temperature (Ts max. ) for each organic peroxide product.

Ts max. 30°C (86°F)

Note When stored under these recommended storage conditions, DCBP will remain within the Do Sender Chemspecifications for a period of at least 6 months after delivery.

Packaging and transport

20kilograms of fiber paper tube, packaged in plastic bags.

DCBPis classified as Organic peroxide type C; solid, Division 5.2; UN 3104.

Major decomposition products

Carbondioxide, 1,3-Dichlorobenzene, 2,4-Dichlorobenzoic acid, Traces of 2,2’,4,4’
tetrachlorobiphenyl.

DCBP      

Standard        

Appearance       

White paste        

Content      

≥ 50.0 ± 1.0%        

Moisture      

1.5% max