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441694

Sigma-Aldrich

2,2-Bis(tert-butylperoxy)butane solution

50 wt. % in mineral oil

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About This Item

Linear Formula:
C2H5C[OOC(CH3)3]2CH3
CAS Number:
Molecular Weight:
234.33
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:

composition

active oxygen content, 6.8 wt. %

t1/2

10 hr(92 °C)

concentration

50 wt. % in mineral oil

refractive index

n20/D 1.445

mp

≥80 °C (SADT)

density

0.88 g/mL at 25 °C

SMILES string

CCC(C)(OOC(C)(C)C)OOC(C)(C)C

Application

Free radical polymerization initiator.
Initiator for polymerization and copolymerization of styrene, ethylene and acrylics in solution, suspension and bulk polymerizations.

Signal Word

Danger

Hazard Classifications

Asp. Tox. 1 - Eye Dam. 1 - Flam. Liq. 3 - Org. Perox. C - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

5.2 - Organic peroxides and self-reacting hazardous materials

WGK

WGK 2

Flash Point(F)

118.4 °F - closed cup

Flash Point(C)

48 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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