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2,5-Dimethyl-2,5-di-(tert-butylperoxy)hexane

HCID 6545
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Basic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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Basic information

CAS
78-63-7
Standard SMILES
CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C
InChIKey
DMWVYCCGCQPJEA-UHFFFAOYSA-N
Molecular formula
C16H34O4
Average molar mass
290.44 g/mol
Monoisotopic mass
290.24570957

Overview

2,5-dimethyl-2,5-di-(tert-butylperoxy)hexane, [<= 52% with inert solid] is a clear, yellow liquid. (NTP, 1992)also for storage and transport mixed with inert solid.

Names & identifiers

Preferred name
2,5-Dimethyl-2,5-di-(tert-butylperoxy)hexane
IUPAC
2,5-bis(tert-butylperoxy)-2,5-dimethylhexane
English name
2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane
Molecular formula
C16H34O4
Molecular weight
290.44

Names & synonyms

78-63-72,5-Dimethyl-2,5-di(tert-butylperoxy)hexane2,5-Dimethyl-2,5-di-(tert-butylperoxy)hexaneVaroxPerhexa 3M40Trigonox 101-101/45CCRIS 4626DTXSID9025110EINECS 201-128-1NSC 38203BRN 1863369UNII-923755EYY5
Show more names
luperoxTrigonox 101DPDHluperox1012,5-Dimethyl-2,5-di2,5-Dimethyl-2,5-di(tert-butyl2,5-DIMETHYL-2,5-DI(T-BUTYL-PEROXY)HEXANE2,5-BIS(TERT-BUTYLPEROXY)-2,5-DIMETHYLHEXANE2,5-DIMETHYL-2,5-BIS(TERT-BUTYLPEROXY)HEXANE2,5-Bis(tert-butyl peroxide)-2,5-dimethyhexane
VAROX DBPHNSC-38203Hexane, 2,5-dimethyl-2,5-di(tert-butylperoxy)-923755EYY52,5-Dimethyl-2,5-bis(tert-butylhydroperoxy)hexaneDTXCID005110EC 201-128-1Peroxide, (1,1,4,4-tetramethyl-1,4-butanediyl)bis((1,1-dimethylethyl)

Database identifiers

Properties

Computed structural propertiesFilling in

XLogP
3.9
Topological polar surface area
36.9 Ų
Hydrogen bond donors
0
Hydrogen bond acceptors
4
Rotatable bonds
9
Heavy atoms
20
Formal charge
0
Complexity
252

Experimental & physicochemical properties

Chemical Classes · 2 items

Other Classes -> Peroxides, Organic

Industrial compound

Solubilityless than 1 mg/mL at 73 °F (NTP, 1992)
Flash Point185 °F (NTP, 1992)
Boiling Point122 to 126 °F at 0.1 mmHg (NTP, 1992)
Melting Point46 °F (NTP, 1992)
Food Contact Substances · 3 items

FCS -> FDA Cumulative Estimated Daily Intake (CEDI)

FCS -> FDA Inventory of Food Contact Substances Listed in 21 CFR

FCS -> FDA Inventory of Effective Food Contact Substance (FCS) Notifications

Physical Description · 4 items

2,5-dimethyl-2,5-di-(tert-butylperoxy)hexane, [<= 52% with inert solid] is a clear, yellow liquid. (NTP, 1992)also for storage and transport mixed with inert solid.

2,5-dimethyl-2,5-di-(tert-butylperoxy)hexane is a clear, yellow liquid. (NTP, 1992)also for storage and transport mixed with inert solid.

CBI; Large Crystals; Other Solid; Liquid; Other Solid; Liquid

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

GHS classification

GHS Classification · 6 items

Danger

H226 (11.8%): Flammable liquid and vapor [Warning Flammable liquids]

P210, P233, P234, P235, P240, P241, P242, P243, P264, P264+P265, P273, P280, P302+P352, P303+P361+P353, P305+P351+P338, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403, P403+P235, P410, P411, P420, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 524 reports by companies from 16 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Danger

H242: Heating may cause a fire [Danger Self-reactive substances and mixtures; Organic peroxides]

Hazard information

Regulatory Information · 5 items

Chemical: Peroxide, (1,1,4,4-tetramethyl-1,4-butanediyl)bis[(1,1-dimethylethyl)

Hazard Traits - Bioaccumulation; Environmental Persistence

Peroxide, 1,1'-(1,1,4,4-tetramethyl-1,4-butanediyl)bis[2-(1,1-dimethylethyl) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Peroxide, 1,1'-(1,1,4,4-tetramethyl-1,4-butanediyl)bis[2-(1,1-dimethylethyl) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 30-03-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/14360

Peroxide, (1,1,4,4-tetramethyl-1,4-butanediyl)bis[(1,1-dimethylethyl) 100%: Does not have an individual approval but may be used under an appropriate group standard

Other Safety InformationIMAP assessments - Peroxide, (1,1,4,4-tetramethyl-1,4-butanediyl)bis[(1,1-dimethylethyl): Human health tier I assessment
DOT Label · 2 items

Organic Peroxide

Organic Peroxide

Fire Hazards

Chemistry & industry

Uses & manufacturing

Uses · 2 items

Used to vulcanize or cross-link elastomers and polyolefins; [EPA - TSCATS] Used as a polymer additive, crosslinking agent, for curing resins, and to make belting, rubber and plastic hose, other rubber products, and plastics; [Government of Canada: Screening Assessment]

Plastic Composites Manufacturing [Category: Industry]

U.S. Production2023: 2,500,000 - <4,000,000 lb
Consumer UsesNot Known or Reasonably Ascertainable
Industry UsesPlasticizer
General Manufacturing Information · 2 items

Plastics Product Manufacturing

Peroxide, 1,1'-(1,1,4,4-tetramethyl-1,4-butanediyl)bis[2-(1,1-dimethylethyl): ACTIVE

Applications

UsesInitiates degradation of polypropylene, monomer scavenger in styrene polymerization. Free radical polymerization initiator.

General Description2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane, also known as trigonox 101, is a clear, yellow liquid. (NTP, 1992)also for storage and transport mixed with inert solid.

Upstream & downstream products

Upstream raw materials

Hydrogen peroxideNickel2-Methyl-2,4-pentanediolDimethylhexynediol2,5-DIMETHYLHEXANE-2,5-DIHYDROPEROXIDE

Related reactions

9 records
New reaction record
HRID 439895 reaction equation
HRID 439895As reactantuspto-grants-1996_05
HRID 590637 reaction equation
HRID 590637As reactantuspto-grants-2016_01
HRID 1091207 reaction equation
HRID 1091207As productuspto-grants-2012_03
HRID 1654593 reaction equation
HRID 1654593As reactantuspto-grants-1995_04
HRID 1676844 reaction equation
HRID 1676844As reactantuspto-grants-2011_08
HRID 1751813 reaction equation
HRID 1751813As reactantuspto-grants-2015_10
HRID 1820571 reaction equation
HRID 1820571As reactantuspto-grants-2009_10
HRID 2095967 reaction equation
HRID 2095967As reactantuspto-grants-2013_05
Page 1 of 2

Compound notes

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On this pageBasic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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CAS
78-63-7
PubChem CID
6545
DTXSID
DTXSID9025110
ChEMBL
CHEMBL1874231
UNII
923755EYY5
EC Number
201-128-1
Nikkaji
J2.829K

Clear yellow liquid; [CAMEO] Liquid; [Sigma-Aldrich MSDS]

Physicochemical properties

Melting point
6 °C · 6 °C
Boiling point
55 · 55-57 °C7 mm Hg(lit.)
Density
0.877 g/mL · 0.877 g/mL at 25 °C(lit.)
vapor pressure
0.002 Pa · 0.002Pa at 20℃
refractive index
20 · n20/D 1.423(lit.)
Flash point
149 °F · 149 °F
storage temp.
2 · 2-8°C
solubility
Chloroform (Soluble), Methanol (Sparingly)
form
Oil
color
Colourless
Water Solubility
immiscible
Henry's Law Constant
3.9 · 3.9×10-3 mol/(m3Pa) at 25℃, Zhang et al. (2010)
Stability
Unstable. May contain an inhibitor. Incompatible with strong oxidizing agents, acids, reducing agents, organic materials, powdered metals.
InChI
1S/C16H34O4/c1-13(2,3)17-19-15(7,8)11-12-16(9,10)20-18-14(4,5)6/h11-12H2,1-10H3
InChIKey
DMWVYCCGCQPJEA-UHFFFAOYSA-N
SMILES
CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C
LogP
7.34 at · 7.34 at 20℃
CAS DataBase Reference
78 · 78-63-7(CAS DataBase Reference)
Indirect Additives used in Food Contact Substances
(1,1,4,4-TETRAMETHYLTETRAMETHYLENE)BIS(TERT-BUTYL PEROXIDE)
FDA 21 CFR
177.152 · 177.1520; 177.2600
FDA UNII
923755 EYY5 · 923755EYY5
EPA Substance Registry System
2 · 2,5-Dimethyl-2,5-di-(tert-butylperoxy)hexane (78-63-7)
UNSPSC Code
12162002 · 12162002
NACRES
23 · NA.23
Symbol(GHS)
2 · GHS02,GHS07
Signal word
Danger
Hazard statements
242 · H242-H315
Precautionary statements
210 · P210-P234-P235-P240-P280-P264-P370+P378-P302+P352-P332+P313-P362+P364-P403-P410-P411-P420-P501
PPE
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Codes
O,Xn,Xi,E
Risk Statements
8 · 8-36/37/38-7-36/38-10-41-37/38-68-38-2
Safety Statements
7 · 7-17-36/37/39-3/7-26-14A-47-14-36/37-35
RIDADR
3108 · UN 3108 5.2
WGK Germany
1 · 1
RTECS
1835000 · MO1835000
TSCA
TSCA listed
HazardClass
5.2 · 5.2
PackingGroup
II
HS Code
29012990 · 29012990
Storage Class
4.1 A · 4.1A - Other explosive hazardous materials
Hazard Classifications
2 Org · Muta. 2Org. Perox. CSkin Irrit. 2
REACH Registrations
Active
· 2 items

Excerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:

Excerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:

Health Hazards · 2 items

Excerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:

Excerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:

Hazards Summary · 1 item

Increased liver weights with corresponding hepatocellular hypertrophy observed in 7-day oral study of rats; [EPA - TSCATS] A strong oxidizing agent that can ignite combustible materials; May explode if heated or contaminated; [CAMEO] A skin and eye irritant; [NTP] May explode from shock, friction, or heat; A skin irritant; [ECHA REACH Registrations] An unstable oxidizer that may cause fire; An irritant; [Sigma-Aldrich MSDS] See 1,4-Bis(alpha-(t-butyldioxy)isopropyl)benzene, Di-tert-butyl peroxide, and Methyl ethyl ketone peroxide.

Reactive Group · 2 items

Peroxides, Organic

Peroxides, Organic

Reactivity Alerts · 2 items

Strong Oxidizing Agent

Explosive

Reactivity Profile · 2 items

Peroxides, such as 2,5-DIMETHYL-2,5-DI-(TERT-BUTYLPEROXY)HEXANE, 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. Danger of explosion when dry. May explode from heat, shock, friction or contamination. May ignite combustibles (wood, paper, oil, clothing, etc.). May be ignited by heat, sparks or flames.

Peroxides, such as 2,5-DIMETHYL-2,5-DI-(TERT-BUTYLPEROXY)HEXANE, 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. Danger of explosion when dry. This compound may react violently on exposure to heat, shock or reducing agents. (NTP, 1992)

Air and Water Reactions · 2 items

Insoluble in water.

Insoluble in water.

Hazard Classes and Categories · 3 items

Flam. Liq. 3 (11.8%)

Flammable liquids - Category 4

Organic peroxides - Type C

Safety & protection

Fire Fighting · 2 items

Excerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:

Excerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:

First Aid · 2 items

Excerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Nonfire Spill Response · 2 items

Excerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:

Excerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:

Isolation and Evacuation · 2 items

Excerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:

Excerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:

Personal Protective Equipment (PPE) · 2 items

Excerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:

RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter. (NTP, 1992)

Toxicology

Adverse EffectsOccupational hepatotoxin - Secondary hepatotoxins: the potential for toxic effect in the occupational setting is based on cases of poisoning by human ingestion or animal experimentation.

Safety data

PPE
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
wgk
1
tsca
TSCA listed
rtecs
MO1835000
ridadr
UN 3108 5.2
hs_code
29012990
risk_code
8-36/37/38-7-36/38-10-41-37/38-68-38-2
Signal word
Danger
Symbol(GHS)
GHS02,GHS07
hazard_code
O,Xn,Xi,E
safety_code
7-17-36/37/39-3/7-26-14A-47-14-36/37-35
hazard_class
5.2
Storage Class
4.1A - Other explosive hazardous materials
packing_group
II
Hazard statements
H242-H315
REACH Registrations
Active
Hazard Classifications
Muta. 2Org. Perox. CSkin Irrit. 2
Precautionary statements
P210-P234-P235-P240-P280-P264-P370+P378-P302+P352-P332+P313-P362+P364-P403-P410-P411-P420-P501