United Initiators DYBP-85-WO 2,5-Dimethyl-2,5-di(tert-butylperoxy) hexyne-3 1068-27-5

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Product Information:

Product Name: DYBP-85-WO
Chemical name: 2,5-Dimethyl-2,5-di-tert-butylperoxyalkyn-3
CAS No. 1068-27-5
Appearance: light yellow liquid
Contains approximately 851 TP3T of technically pure 2,5-Dimethyl-2,5-di(tert-butylperoxy) hexyne-3 with 151 TP3T white oil added to minimize sensibility.
This bifunctional dialkyl peroxide is used as a free radical initiator in the crosslinking of polyethylene above 180 °C.

Technical data:

Appearance: light yellow liquid
Desensitizer: White oil
Content: Approx. 85% weight/weight
Density (20°C): approx. 0.88 g/cm³
Viscosity (20°C): approx. 11 mPa-s
Refractive index (20°C): approx. 1.436
Flash point: approx. 69°C
SADT: approx. 90°C
Refrigeration stability: freezing point below 0°C
Recommended storage temperature: not exceeding 40°C
Storage stability from date of delivery: 12 months

Applications:

Crosslinking agent for polyethylene (HDPE, LLDPE and LDPE with carbon black).
Crosslinking temperature: above 180°C, avoid premature crosslinking (sintering) below 150°C.
Dosage: 0.2 - 2% (w/w) of supplied product.

Decomposition products:

Decomposition products that may be detected: tert-butanol, acetone, methane, 3-hexyne-2,5-dione.

Storage:

Avoid heat, light, humidity and protect the product from impurities. Keep within safe temperature range.

Typical Packaging:

15 kg (33.1 lbs) / 20 kg (44.1 lbs) HDPE tank.

Performance in use:

Levels of peroxides that affect the degree of cross-linking.

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