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Safety Information

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

441694-VAR:
441694-1L:
441694-250ML:
441694-BULK:


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