3,5,5-Trimethylhexanoyl peroxide (CAS 3851-87-4)
3,5,5-Trimethylhexanoyl peroxide (CAS 3851-87-4) is an organic peroxide compound with molecular formula C18H34O4 and molecular weight 314.46. Also known as 3，5，5-Trimethyl caproyl peroxide, bis(3,5,5-trimethylhexanoyl) peroxide, Di(3,5,5-trimethylhexanoyl) peroxide. It typically appears in liquid form.
3,5,5-Trimethylhexanoyl peroxide (CAS number: 3851-87-4) is an high-performance chemical raw material that is renowned for its excellent thermal stability and low volatility, performing exceptionally well in complex chemical syntheses. It is widely applied in PVC production, styrene polymerization, and modified plastic formulations. 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 26 products from 12 verified manufacturers.
CAS 3851-87-4 is also known as:
- 3，5，5-Trimethyl caproyl peroxide
- bis(3,5,5-trimethylhexanoyl) peroxide
- Di(3,5,5-trimethylhexanoyl) peroxide
- Peroxide, bis(3,5,5-trimethyl-1-oxohexyl)
- Dinonanoyl peroxide
- 3,5,5-Trimethylhexanoyl 3,5,5-trimethylhexaneperoxoate
- Bis(3,5,5-trimethyl-1-oxohexyl) peroxide
- Bis(3,5,5-trimethyl-1-oxohexyl)peroxide
- Di-(3,5,5-trimethylhexanoyl)-peroxid
CAS Number
3851-87-4
Molecular Formula
C18H34O4
Molecular Weight
314.46
EINECS Number
223-356-0
MDL Number
MFCD00058866
BRN Number
1746700
Chemical Name
3,5,5-Trimethylhexanoyl peroxide
Last Updated
8/7/2025
Aliases
Appearance
Colorless liquid
Appearance State
Liquid. Insoluble in water.
Color
Colorless
Odor
Pungent odor
Form
Liquid
Melting Point
< -25
Boiling Point
359.5 (predicted)
Flash Point
ca. 35
Density
0.942 (predicted)
Vapor Density
>1 (air=1)
Vapor Pressure
0.012 Pa @ 25°C
Refractive Index
1.432 (predicted)
LogP Value
4.2 (predicted)
Merck Index
Not Listed
Solubility
Insoluble in water, readily soluble in acetone, chloroform, etc.
Water Solubility
10 mg/L @ 5°C
Solubility Detail
Insoluble in water, readily soluble in organic solvents like acetone, chloroform.
Storage Conditions
Store in a cool, dry, well-ventilated place, away from heat, sparks, open flames. No smoking.
InChI Key
BMRYBCQPPAPZNS-UHFFFAOYSA-N
GHS Hazard Symbols
Hazard Class
Signal Word
Danger
Hazard Symbols
O
Risk Codes
R7
UN Number
UN 3106
IARC Classification
Not Classified
WGK Germany
1
RTECS Number
-
Auto-ignition Temperature
ca. 240
TSCA Listed
Listed (Active)
Packing Group
II
Customs Code
29096000
Occupational Exposure Band (OEB)
Not Specified
Occupational Exposure Limit (OEL)
Not Specified
Immediately Dangerous to Life or Health (IDLH)
Not Specified
Hazard Statements
H315,H242,H317,H304Precautionary Statements
P261, P272, P280, P302+P352, P333+P313, P321, P363, P501, P264, P280, P302+P352, P321, P332+P313, P362, P210, P220, P234, P280, P370+P378, P403+P235, P411, P420, P501Safety Statements
S3/7, S14, S36/37/39
12 verified suppliers offering 26 products for 3,5,5-Trimethylhexanoyl peroxide (CAS 3851-87-4). Compare equivalent grades across brands (e.g., Trigonox vs Luperox) by assay, physical form, and availability from trusted manufacturers and distributors worldwide.
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