TBPIN-42S is an initiator for (co)polymerization of (meth)acrylates.

Specifications

Active oxygen	6.74 %
Appearance	Clear liquid
Assay	97.0 %
Color	50 Pt-Co / APHA max.
Hydroperoxides as TBHP	0.099 %
Inorganic + organic hydrolysable chloride	150 mg/kg

Characteristics

Density, 20 °C	0.900 g/cm³
Viscosity, 20 °C	5mPa.s

Applications

TBPIN-42S (tert-Butyl peroxy-3,5,5-trimethylhexanoate) can be used for the market segments: polymer production, thermoset composites and acrylics with their different applications/functions. For more information please check our website and/or contact us.

Half-life data

The reactivity of an organic peroxide is usually given by its half-life (t½) at various temperatures. For TBPIN-42S in chlorobenzene:

0.1 hr	135°C (275°F)
1 hr	114°C (237°F)
10hr	94°C (201°F)
Formula 1	kd = A·e-Ea/RT
Formula 2	t½ = (ln2)/kd
Ea	140.78 kJ/mole
A	1.94E+15 s-1
R	8.3142 J/mole·K
T	(273.15+°C) K

Thermalst ability

Organic peroxides are thermally unstable 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	55°C (131°F)
Method	The Heat Accumulation Storage Test is a recognized test method for the determination of 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

Due to 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, Thousands chemicals recommends a maximum storage temperature (Ts max.) for each organic peroxide product.

Ts Max.	25°C (77°F)
Ts Min.	-20°C (-4°F)
Note	When stored under these recommended storage conditions, TBPIN-42S will remain within the THOUSANDS CHEMICALS specifications for a period of at least 3 months after delivery.

Packaging and transport

In North America TBPIN-42S is packed in non-returnable, 5 gallon polyethylene containers of 35 lb net weight. In other regions the standard packaging is a 30-liter HDPE can (Nourytainer®) for 25 kg peroxide solution. Both packaging and transport meet the international regulations. For the availability of other packed quantities contact your THOUSANDS CHEMICALS representative. TBPIN-42S is classified as Organic peroxide type D; liquid, Division 5.2; UN 3105.

Safety and handling

Keep containers tightly closed. Store and handle TBPIN-42S in a dry well-ventilated place away from sources of heat or ignition and direct sunlight. Never weigh out in the storage room. Avoid contact with reducing agents (e.g. amines), acids, alkalis and heavy metal compounds (e.g. accelerators, driers and metal soaps). Please refer to the Safety Data Sheet (SDS) for further information on the safe storage, use and handling of TBPIN-42S. This information should be thoroughly reviewed prior to acceptance of this product. The SDS is available at THOUSANDS CHEMICALS.com/sds-search

Major decomposition products

Carbon dioxide, Methane, tert-Butanol, Acetone, 2-tert-Butyloxy-2,4,4-trimethylpentane