Diacetyl peroxide
Skeletal formula
Ball-and-stick model
Names
Preferred IUPAC name
Acetic peroxyanhydride[2]
Other names
acetyl peroxide (2:1); diacetyl peroxide; Peroxide, diacetyl; ethanoyl peroxide; acetyl ethaneperoxoate; ethanoyl ethane peroxoate;[1] peracetic acid acetyl ester
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.003.409 Edit this at Wikidata
EC Number
  • 203-748-8
UNII
UN number 2084
  • InChI=1S/C4H6O4/c1-3(5)7-8-4(2)6/h1-2H3 checkY
    Key: ZQMIGQNCOMNODD-UHFFFAOYSA-N checkY
  • O=C(OOC(=O)C)C
Properties
C4H6O4
Molar mass 118.088 g·mol−1
Appearance Colorless crystals[3]
Density 1.163 g/cm3[3]
Melting point 30 °C (86 °F; 303 K)
Boiling point 121.4 °C (250.5 °F; 394.5 K) at 760 mmHg; 63 °C (145 °F; 336 K) at 21 mmHg[4]
slight in cold water [3]
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Explosive, oxidizer
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g. diesel fuelInstability 4: Readily capable of detonation or explosive decomposition at normal temperatures and pressures. E.g. nitroglycerinSpecial hazards (white): no code
1
2
4
Flash point 32.2 °C (90.0 °F; 305.3 K) (45 °C [113 °F; 318 K][5])
Explosive data
Shock sensitivity Very high / moderate when wet
Friction sensitivity Very high / moderate when wet
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Diacetyl peroxide is the organic peroxide with the formula (CH3CO2)2. It is a white solid or oily liquid with a sharp odor.[5] As with a number of organic peroxides, it is explosive.[6] It is often used as a solution, e.g., in dimethyl phthalate.[3]

History

Diacetyl peroxide was discovered in 1858 by Benjamin Collins Brodie,[7] who obtained the compound by treating glacial acetic acid with barium peroxide in anhydrous diethyl ether.[8]

Preparation

Diacetyl peroxide forms upon combining hydrogen peroxide and excess acetic anhydride. Peracetic acid is an intermediate.[9]

Safety

Consisting of both an oxidizer, the O-O bond and reducing agents, the C-C and C-H bonds, diacetyl peroxide is shock sensitive and explosive.[10][11][3]

The threshold quantity for Process Safety Management per Occupational Safety and Health Administration 1910.119 is 5,000 lb (2,300 kg) if the concentration of the diacetyl peroxide solution is greater than 70%.[12]

There have been reports of detonation of the pure material. The 25% solution also has explosive potential.[13] The crystalline peroxide is especially shock sensitive and a high explosion risk.[14][11]

Safety

Organic peroxides are all prone to exothermic decomposition, potentially leading to explosions and fire.[15]

Contact with liquid causes irritation of eyes and skin. If ingested, it irritates mouth and stomach.[16][17][18][19]

References

  1. ^ Diacetyl peroxide
  2. ^ International Union of Pure and Applied Chemistry (2014). Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013. The Royal Society of Chemistry. p. 829. doi:10.1039/9781849733069. ISBN 978-0-85404-182-4.
  3. ^ a b c d e Lewis, R. J. Sr, ed. (1997). Hawley's Condensed Chemical Dictionary (13th ed.). New York, NY: John Wiley & Sons. p. 13.
  4. ^ Lide, D. R., ed. (1998–1999). CRC Handbook of Chemistry and Physics (79th ed.). Boca Raton, Florida: CRC Press. pp. 3–250.
  5. ^ a b "Acetyl peroxide" (PDF). NJ.gov.
  6. ^ Sax, N. I. (1975). Dangerous Properties of Industrial Materials (4th ed.). New York, NY: Van Nostrand Reinhold. p. 357. ISBN 9780442273682.
  7. ^ "Anniversary Meeting". Journal of the Chemical Society, Transactions. 39: 177–201. 30 March 1881. doi:10.1039/CT8813900177. Retrieved 17 February 2022.
  8. ^ Brodie, Benjamin Collins (1 January 1859). "I. Note on the formation of the peroxides of the radicals of the organic acids". Proceedings of the Royal Society of London. 9: 361–365. doi:10.1098/rspl.1857.0087. S2CID 97728118.
  9. ^ "Chemical Safety: Synthesis Procedure". Chemical & Engineering News. 89 (2): 2. 2011-01-10.
  10. ^ "Chemical Safety: Synthesis Procedure". Chemical & Engineering News. 89 (2): 2. 2011-01-10.
  11. ^ a b National Fire Protection Association (1978). Fire Protection Guide on Hazardous Materials (7th ed.). Boston, MA: National Fire Protection Association. pp. 49–110.
  12. ^ "1910.119 App A - List of Highly Hazardous Chemicals, Toxics and Reactives (Mandatory) | Occupational Safety and Health Administration".
  13. ^ National Research Council (1981). Prudent Practices for Handling Hazardous Chemicals in Laboratories. Washington, DC: National Academy Press. p. 106.
  14. ^ Bretherick, L. (1990). Handbook of Reactive Chemical Hazards (4th ed.). Boston, MA: Butterworth-Heinemann. pp. 453, 1104.
  15. ^ Klenk, Herbert; Götz, Peter H.; Siegmeier, Rainer; Mayr, Wilfried. "Peroxy Compounds, Organic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a19_199.pub2. ISBN 978-3527306732.
  16. ^ National Research Council (1981). Prudent Practices for Handling Hazardous Chemicals in Laboratories. Washington, DC: National Academy Press. p. 106.
  17. ^ International Labour Office (1998). Encyclopaedia of Occupational Health and Safety. Vol. 1–4 (4th ed.). Geneva: International Labour Office. p. 104.349.
  18. ^ Clayton, G.D.; Clayton, F.E., eds. (1993–1994). Patty's Industrial Hygiene and Toxicology. Vol. 2A–2F (4th ed.). New York, NY: John Wiley & Sons. p. 545.
  19. ^ Mackison, F. W.; Stricoff, R. S.; Partridge, L. J. Jr, eds. (Jan 1981). NIOSH/OSHA - Occupational Health Guidelines for Chemical Hazards. DHHS(NIOSH) Publication No. 81–123. Washington, DC: U.S. Government Printing Office. p. 1.
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