Di-tert-butyl peroxide (CAS 110-05-4)
Di-tert-butyl peroxide (CAS 110-05-4) is an organic peroxide compound with molecular formula C8H18O2 and molecular weight 146.23. Also known as BIS(1,1-DIMETHYLETHYL)PEROXIDE, DIBUTYLPEROXIDE, DI-T-BUTYL PEROXIDE. It typically appears in oily liquid form.
Di-tert-butyl peroxide (CAS number: 110-05-4) is an industrial-grade chemical raw material that is widely applied in the curing of synthetic resins and high-temperature crosslinking of elastomers, making it an industry-preferred additive. It is especially common in the modification of foaming materials, EVA footwear, and various engineering plastics. Its exceptional chemical characteristics give it an important position in modern industrial formulations, providing enterprises with highly efficient product solutions.
Below you can find its complete physical and chemical properties, safety data, GHS hazard classifications, and a catalog of 40 products from 17 verified manufacturers.
CAS 110-05-4 is also known as:
- BIS(1,1-DIMETHYLETHYL)PEROXIDE
- DIBUTYLPEROXIDE
- DI-T-BUTYL PEROXIDE
- DI-TERT-BUTYL PEROXIDE
- DI-TERTIARY-BUTYL PEROXIDE
- DTBP
- T-BUTYL PEROXIDE
- TERT-BUTYL PEROXIDE
- (tert-C4H9O)2
- (tributyl)peroxide
- 2-(tert-Butylperoxy)-2-methylpropane
- Aztec di-t-butyl peroxoide
- bis(1,1-dimethylethyl)-peroxid
- bis(t-butyl)peroxide
- Bis(tert-butyl) peroxide
CAS Number
110-05-4
Molecular Formula
C8H18O2
Molecular Weight
146.23
EINECS Number
203-733-6
MDL Number
MFCD00008803
BRN Number
1747809
Chemical Name
Di-tert-butyl peroxide
Last Updated
7/28/2025
Aliases
Appearance
Pale yellow oily liquid with a characteristic odor
Appearance State
Oily liquid. Insoluble in water, soluble in most organic solvents.
Color
Colorless
Odor
Characteristic odor
Form
Oily Liquid
Melting Point
-30
Boiling Point
109-110 (lit.)
Flash Point
36 (c.c.)
Density
0.796 @ 25 °C
Vapor Density
5 (air=1)
Vapor Pressure
40 mmHg @ 20°C
Refractive Index
1.3891 (20°C D lit.)
LogP Value
3.2 @ 22 °C
Merck Index
3172
Solubility
Insoluble in water, soluble in ketones, hydrocarbons.
Water Solubility
immiscible with water
Solubility Detail
Solubility in water is 0.063 g/L, soluble in ketones, hydrocarbons.
Storage Conditions
Store at 2-8°C.
InChI Key
LSXWFXONGKSEMY-UHFFFAOYSA-N
GHS Hazard Symbols
Hazard Class
Signal Word
Danger
Hazard Symbols
O
Risk Codes
R7, R11
UN Number
UN 3107
IARC Classification
Not Classified
WGK Germany
1
RTECS Number
ER2450000
Auto-ignition Temperature
182
TSCA Listed
Listed (Active)
Packing Group
II
Customs Code
29096000
Occupational Exposure Band (OEB)
Not Specified
Occupational Exposure Limit (OEL)
ACGIH C: 1 ppm (Skin)
Immediately Dangerous to Life or Health (IDLH)
75 ppm
Hazard Statements
H225,H242,H341,H412Precautionary Statements
P210,P220,P273,P280,P410,P411+P235Safety Statements
S3/7, S14, S16, S36/37/39
17 verified suppliers offering 40 products for Di-tert-butyl peroxide (CAS 110-05-4). Compare equivalent grades across brands (e.g., Trigonox vs Luperox) by assay, physical form, and availability from trusted manufacturers and distributors worldwide.
Are you a Manufacturer or Distributor?
List your company and organic peroxide products for free to reach thousands of global buyers and engineers.