ChemicalBook CAS DataBase List 80-43-3

80-43-3

Name	Dicumyl peroxide
CAS	80-43-3
EINECS(EC#)	201-279-3
Molecular Formula	C18H22O2
MDL Number	MFCD00675945
Molecular Weight	270.37
MOL File	80-43-3.mol

Synonyms

2,5-DIMETHYL-2,5-DI(BENZOYLPEROXY)HEXANE BIS(1-METHYL-1-PHENYLETHYL)PEROXIDE BIS(A A-DIMETHYLBENZYL) PEROXIDE BIS(ALPHA,ALPHA-DIMETHYLBENZYL) PEROXIDE Curing agent DCP DICUMYL PEROXIDE Dicumyl peroxide(content>42%,with inert solid) Dicumyl peroxide(technically pure) LUPEROX(R) DCSC VAROX 118 VAROX 230-XL VAROX DCP-40C VAROX DCP-40KE VAROX DCP-R activedicumylperoxide alpha,alpha’-dicumylperoxide alpha,alpha-dimethylbenzylperoxide alpha-cumylperoxide Bis(,-dimethylbenzyl)peroxide bis(2-phenyl-2-propyl)peroxide

Chemical Properties

Appearance	white powder
Melting point	39-41 °C (lit.)
Boiling point	130°C
density	1.56 g/mL at 25 °C(lit.)
vapor density	9.3 (vs air)
vapor pressure	15.4 mm Hg ( 38 °C)
refractive index	1.5360
Fp	>230 °F
storage temp.	2-8°C
solubility	Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly)
form	flakes
color	White
Stability:	Reacts violently with reducing agents, heavy metals, concentrated acids, concentrated bases. May ignite organic materials on contact. May decompose violently upon exposure to sunlight or if heated. Incompatible with strong oxidizing agents.
Water Solubility	insoluble
Hydrolytic Sensitivity	4: no reaction with water under neutral conditions
BRN	2056090
Henry's Law Constant	2.2×10^-1 mol/(m³Pa) at 25℃, HSDB (2015)
InChI	1S/C18H22O2/c1-17(2,15-11-7-5-8-12-15)19-20-18(3,4)16-13-9-6-10-14-16/h5-14H,1-4H3
InChIKey	XMNIXWIUMCBBBL-UHFFFAOYSA-N
SMILES	CC(C)(OOC(C)(C)c1ccccc1)c2ccccc2
LogP	5.6 at 25℃
CAS DataBase Reference	80-43-3(CAS DataBase Reference)
EPA Substance Registry System	80-43-3(EPA Substance)

Safety Data

Symbol(GHS)	GHS02,GHS07,GHS08,GHS09
Signal word	Danger
Hazard statements	H242-H315-H319-H360D-H411
Precautionary statements	P210-P235-P273-P280-P308+P313-P370+P378
Hazard Codes	O,Xi,N,Xn
Risk Statements	R7:May cause fire. R36/38:Irritating to eyes and skin . R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment . R36/37/38:Irritating to eyes, respiratory system and skin . R20:Harmful by inhalation. less more
Safety Statements	S14:Keep away from ... (incompatible materials to be indicated by the manufacturer) . S3/7:Keep container tightly closed in a cool place . S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . S61:Avoid release to the environment. Refer to special instructions safety data sheet . S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . S36:Wear suitable protective clothing . S17:Keep away from combustible material . less more
RIDADR	UN 3110 5.2
WGK Germany	2
RTECS	SD8150000
F	4.2
TSCA	Yes
REACH Registrations	Active
HazardClass	5.2
PackingGroup	II
HS Code	29096000
Storage Class	5.2 - Organic peroxides and self-reacting hazardous materials
Hazard Classifications	Aquatic Chronic 2 Eye Irrit. 2 Org. Perox. F Repr. 1B Skin Irrit. 2
Safety Profile	Mildly toxic by ingestion. See also PEROXIDES. When heated to decomposition it emits acrid smoke and irritating fumes. less more
Hazardous Substances Data	80-43-3(Hazardous Substances Data)
Toxicity	LD50 orally in Rabbit: 4100 mg/kg less more

Raw materials And Preparation Products

Hazard Information

General Description

White powder with a characteristic odor.

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. DICUMYL PEROXIDE is unlikely that this derivative would be particularly unstable compared to other peroxides in it's class, Bretherick 2nd ed., p 44 1979.

Chemical Properties

Dicumyl peroxide is a crystalline solid that melts at 42°C. It is insoluble in water and soluble in vegetable oil and organic solvents . It is used as a high-temperature catalyst in production of polystyrene plastics. The deflagration hazard potential of this peroxide was tested using 5 g of igniter in the revised time–pressure test, but no pressure rise was produced . Noller et al. found it to be an intermediate fire hazard.

Chemical Properties

white powder

Uses

Dicumyl peroxide (DCP) is used:

in vulcanization of rubber
as a crosslinking agent in the synthesis of polylactic acid composite fibers
in the preparation of polyethylene composites
in the synthesis of polyamide 112/ethylene vinyl acetate copolymer blends.

Uses

Dicumyl peroxide (DCP) is used: ? in vulcanization of rubber. ? as a cross linking agent in the synthesis of polylactic acid composite fibers. ? in the preparation of polyethylene composites. ? in the synthesis of polyamide 112/ethylene vinyl acetate copolymer blends.

Flammability and Explosibility

Nonflammable

reaction suitability

reagent type: oxidant

Purification Methods

Crystallise the peroxide from 95% EtOH (charcoal). Store it at 0o. Potentially EXPLOSIVE. [Beilstein 6 IV 3220.]

Toxics Screening Level

The initial threshold screening level (ITSL) for dicumyl peroxide will remain 0.1 μg/m3 (annual averaging time).

Material Safety Data Sheet(MSDS)

Spectrum Detail

Well-known Reagent Company Product Information

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