di-tert-butyl diperoxyphthalate Property

Boiling point:

370.51°C (rough estimate)

Density 

1.1625 (rough estimate)

refractive index 

1.4600 (estimate)

EPA Substance Registry System

1,2-Benzenedicarboperoxoic acid, 1,2-bis(1,1-dimethylethyl) ester (2155-71-7)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

di-tert-butyl diperoxyphthalate Chemical Properties,Usage,Production

Chemical Properties

This peroxide powder with 8.45% active oxygen and 82% purity was mixed 20% in water and showed small pressure rises in the time–pressure assay when using 1 g of igniter. This indicates that this material poses a deflagration hazard.

General Description

Crystalline solid mixed with water. Water lessens the explosion hazard.

Reactivity Profile

Peroxides, such as DI-(TERT-BUTYLPEROXY)PHTHALATE, are good oxidizing agents. Organic compounds can ignite on contact with concentrated peroxides. Strongly reduced material such as sulfides, nitrides, and hydrides may react explosively with peroxides. There are few chemical classes that do not at least produce heat when mixed with peroxides. Many produce explosions or generate gases (toxic and nontoxic). Generally, dilute solutions of peroxides (<70%) are safe, but the presence of a catalyst (often a transition metal such as cobalt, iron, manganese, nickel, or vanadium) as an impurity may even then cause rapid decomposition, a buildup of heat, and even an explosion. Solutions of peroxides often become explosive when evaporated to dryness or near-dryness.

Purification Methods

Crystallise the perphthalate from Et2O or pet ether and dry it over H2SO4. The IR has max 1772cm-1 in CCl4. [Milas & Surgemor J Am Chem Soc 68 642 1946, Milas & Kelin J Org Chem 36 2900 1971, Beilstein 9 III 4190, 9 IV 3260.] Potentially EXPLOSIVE.