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Di-tert-butyl
peroxide

Other
Names: DTBP,

Cadox;cadoxtbp;Cadox
tbp;perbutyld;trigonoxb;interoxdtbChemical

CAS
Number: 110-05-4

EINECS:
203-733-6

Molecular
Formula:C8H18O2

Di-tert-butyl
peroxide Properties

Melting point -30 °C

Boiling point 109-110 °C(lit.)

Density 0.796 g/mL at 25 °C(lit.)

vapor pressure 40 mm Hg ( 20 °C)

refractive index n20/D 1.3891(lit.)

Flash point 34 °F

storage temp. Store at +15°C to +25°C.

solubility 0.063g/l

form Liquid

color Clear

Water Solubility immiscible

Merck 14,3461

BRN 1735581

Stability May decompose explosively
if heated, subjected to shock, or treated with reducing agents. Highly
flammable. Refrigerate.

InChIKey LSXWFXONGKSEMY-UHFFFAOYSA-N

Indirect Additives used in Food Contact Substances TERT-BUTYL PEROXIDE

CAS DataBase Reference 110-05-4(CAS DataBase
Reference)

FDA 21 CFR 176.170; 177.2600

 

Description

Ditertiary
butyl peroxide is a clear, water-white liquid. It has a specific gravity of
0.79, which is lighter than water, and it will float on the surface. It is nonpolar
and insoluble in water. Ditertiary butyl peroxide is a strong oxidizer and may
ignite organic materials or explode if shocked or in contact with reducing
agents. In addition to being an oxidizer, ditertiary butyl peroxide is highly
flammable. It has a boiling point of 231°F (110°C) and a flash point of 65°F
(18°C). The NFPA 704 designation is health 3, flammability 2, and reactivity 4.
The prefix “oxy” for oxidizer is placed in the white section at the bottom of
the 704 diamond.

Features of Rutile Titanium Dioxide

• Better

anti-pulverization ability and gloss retention.

• The

hygroscopicity is less than antase type.

• Its

dielectric constant and semiconductor properties are very important to the
electronics industry, which can be used to produce electronic components for
ceramic capacitors.

• High

refractive index, hiding power and gloss are better than anatase TiO2.

• The

structure is more compact and stable, and the photochemical activity is small,
so the weather resistance is much better.

Reactivity
Profile

The
explosive instability of the lower dialkyl peroxides (e.g., dimethyl peroxide)
and 1,1-bis-peroxides decreases rapidly with increasing chain length and degree
of branching, the di-tert-alkyl derivatives being amongst the most stable class
of peroxides. Though many 1,1-bis-peroxides have been reported, few have been
purified because of the higher explosion hazards compared with the
monofunctional peroxides. Di-tert-butyl peroxide is unlikely that this
derivative would be particularly unstable compared to other peroxides in it's
class, Bretherick 1979v.

 

Health
Hazard

DTBP
is slightly toxic by inhalation andin general exhibits low to very low
toxicityby other routes. However, toxic effectsare observed only at very high
concentrations.Rats exposed to 4103-ppm vapor developedhead and neck tremor
after 10 minutesof exposure (Floyd and Stockinger 1958).Other symptoms were
weakness, hyperactivity,and labored breathing. However, theanimals recovered
fully in 1 hour.

LD50
value, intraperitoneal rats): 3210 mg/kg

DTBP
is nonirritating to the skin and mildon the eyes. It is reported to cause
lungand blood tumors in mice (NIOSH 1986).However, its carcinogenicity is not
yet fullyestablished.

 

Fire
Hazard

Highly
flammable and reactive; flash point 18°C (64.4°F); vapor pressure 19.5 torr at
20°C (68°F); vapor density 5.03. Its decomposition products are ethane and
acetone, which enhance the fire hazard. Use a water spray to fight fire and to
keep the containers cool.

DTBP
forms an explosive mixture with air. The explosive range is not reported. Its
decomposition products may explode above its boiling point, 111°C (231.8°F).
However, as it is thermally stable and shock insensitive, its explosion hazard
is much lower. It may, however, react with explosive violence when in contact
with easily oxidizable substances.

 
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