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8.20248 EMD Millipore

Di-tert-butyl peroxide

Di-tert-butyl peroxide for synthesis. CAS 110-05-4, molar mass 146.23 g/mol., for synthesis

Synonym: tert-Butyl peroxide

  • CAS Number 110-05-4

  • Linear Formula C₈H₁₈O₂

  • Molecular Weight 146.23 g/mol

  •  EC Number 203-733-6



Related Categories Biochemicals and Reagents More...
packaging   1 l in Plastic bottle (8202481000)
vapor pressure   1000 hPa (110 °C)
solubility   0.063 g/l
density   0.80 g/cm3 (20 °C)
flash point   4 °C
autoignition temp.   182 °C
mp   -40 °C
LD 50 oral   LD50 Rat > 25000 mg/kg
shipped in   ambient
storage temp.   Store at +15°C to +25°C.
specifications   Assay (GC, area%): ≥ 98.0 % (a/a)
  Density (d 20 °C/ 4 °C): 0.795 - 0.797
  Identity (IR): passes test

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Safety Information

HS Code 
2909 60 00
Hazard Statement(s) 
H225: Highly flammable liquid and vapour.
H242: Heating may cause a fire.
H341: Suspected of causing genetic defects.
Precautionary Statement(s) 
P210: Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P233: Keep container tightly closed.
P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
P308 + P313: IF exposed or concerned: Get medical advice/ attention.
Storage class 
5.2 Organic peroxides and self-reacting hazardous materials
WGK 1 slightly water endangering
Organic peroxides can be detected in aqueous solutions or organic solvents using the Perex-Test® (Cat. No. 116206). Pure peroxides are diluted to min. 10% in a suitable solvent or with water and added in small portions, with temperature control, to iron(II) chloride (Cat. No. 103860) solution. Test for complete reaction with the Perex-Test® (Cat. No. 116206). Container D. Explosive substances (storage class 4.1A) should be packed separately and tightly sealed for disposal. Ensure sufficient phlegmatization by water or the stated phlegmatizing agent!
Hazard Pictogram(s) 
GHS02  GHS02
Hazard Pictogram(s) 
GHS08  GHS08
Hazard Symbols 
Flammable  Flammable
Hazard Symbols 
Oxidising  Oxidising
Hazard Symbols 
Harmful  Harmful
Declaration (railroad and road) ADR, RID 
UN 3107 , 5.2,
Declaration (transport by air) IATA-DGR 
UN 3107 , 5.2,
Declaration (transport by sea) IMDG-Code 
UN 3107 , 5.2,
Categories of danger 
oxidizing, highly flammable, mutagenic
R Phrase 
R 7-11-68
May cause fire.Highly flammable.Possible risk of irreversible effects.
S Phrase 
S 3/7-14-16-36/37/39
Keep container tightly closed in a cool place.Keep away from flammable organic substances.Keep away from sources of ignition - No smoking.Wear suitable protective clothing, gloves and eye/face protection.
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