N-Isopropyl-N'-phenyl-1,4-phenylenediamine

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N-Isopropyl-N′-phenyl-1,4-phenylenediamine
N-Isopropyl-N'-phenyl-p-phenylenediamine.svg
Names
Preferred IUPAC name
N1-Phenyl-N4-(propan-2-yl)benzene-1,4-diamine
Other names
  • 4-Isopropylaminodiphenylamine
  • Flexzone 3C
  • Nonox 3C
  • Rhenogran IPPD-80
  • Santoflex IPPD
  • Vanox 3C
  • Vulkanox 4010
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.002.700 Edit this at Wikidata
EC Number
  • 202-969-7
RTECS number
  • ST2650000
UNII
UN number 1673
  • InChI=1S/C15H18N2/c1-12(2)16-14-8-10-15(11-9-14)17-13-6-4-3-5-7-13/h3-12,16-17H,1-2H3
    Key: OUBMGJOQLXMSNT-UHFFFAOYSA-N
  • CC(C)NC1=CC=C(C=C1)NC2=CC=CC=C2
Properties
C15H18N2
Molar mass 226.323 g·mol−1
Appearance dark grey flakes
Density 1.04
Melting point 75 °C (167 °F; 348 K)
Hazards
GHS labelling:
GHS07: Exclamation markGHS08: Health hazardGHS09: Environmental hazard
Signal word
 Danger
H302, H317, H320, H371, H372, H373, H410
P260, P261, P264, P270, P272, P273, P280, P301+P312, P302+P352, P305+P351+P338, P309+P311, P314, P321, P330, P333+P313, P337+P313, P363, P391, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

N-Isopropyl-N′-phenyl-1,4-phenylenediamine (often abbreviated IPPD) is an organic compound commonly used as an antiozonant in rubbers,[1] particularly those used for tires. Like other p-phenylenediamine-based antiozonants it works by virtue of its low ionization energy, which allows it to react with ozone faster than ozone will react with rubber.[2] This reaction converts it to the corresponding aminoxyl radical (R2N–O•), with the ozone being converted to a hydroperoxyl radical (HOO•),[2] these species can then be scavenged by other antioxidant polymer stabilizers.

IPPD is prone to process called blooming, where it migrates to the surface of the rubber.[3]

Safety[]

IPPD is a human allergen.[4][5] It is the compound responsible for coining the term "Volkswagen Dermatitis".[6]

See also[]

References[]

  1. ^ Lewis, P.M. (January 1986). "Effect of ozone on rubbers: Countermeasures and unsolved problems". Polymer Degradation and Stability. 15 (1): 33–66. doi:10.1016/0141-3910(86)90004-2.
  2. ^ a b Cataldo, Franco (January 2018). "Early stages of p-phenylenediamine antiozonants reaction with ozone: Radical cation and nitroxyl radical formation". Polymer Degradation and Stability. 147: 132–141. doi:10.1016/j.polymdegradstab.2017.11.020.
  3. ^ Choi, Sung-Seen (5 July 1997). "Migration of Antidegradants to the Surface in NR and SBR Vulcanizates". Journal of Applied Polymer Science. 65 (1): 117–125. doi:10.1002/(SICI)1097-4628(19970705)65:1<117::AID-APP15>3.0.CO;2-0.
  4. ^ Lammintausta, K; Kalimo, K (1985). "Sensitivity to Rubber. Study with Rubber Mixes and Individual Rubber Chemicals". Dermatosen in Beruf und Umwelt. Occupation and Environment. 33 (6): 204–8. PMID 2936592.
  5. ^ Conde-Salazar, Luis; del-Río, Emilio; Guimaraens, Dolores; Domingo, Antonia González (August 1993). "Type IV Allergy to Rubber Additives: A 10-Year Study of 686 Cases". Journal of the American Academy of Dermatology. 29 (2): 176–180. doi:10.1016/0190-9622(93)70163-N.
  6. ^ Jordan, William P., Jr. (1971-01-01). "Contact Dermatitis From N-Isopropyl-N-Phenylparaphenylenediamine: "Volkswagen Dermatitis"". Archives of Dermatology. 103 (1): 85–87. doi:10.1001/archderm.1971.04000130087014. ISSN 0003-987X.
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