Product Name

  • Name

    Antioxidant 24

  • EINECS 247-952-5
  • CAS No. 26741-53-7
  • Article Data3
  • CAS DataBase
  • Density 1.166[at 20℃]
  • Solubility 93μg/L at 25℃
  • Melting Point 160-178 °C
  • Formula C33H50O6P2
  • Boiling Point 555.8 °C at 760 mmHg
  • Molecular Weight 604.704
  • Flash Point 363.9 °C
  • Transport Information
  • Appearance White powder
  • Safety
  • Risk Codes
  • Molecular Structure Molecular Structure of 26741-53-7 (Antioxidant 24)
  • Hazard Symbols
  • Synonyms Phosphorousacid, cyclic neopentanetetrayl bis(2,4-di-tert-butylphenyl) ester (8CI);2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane,3,9-bis(2,4-di-tert-butylphenoxy)- (8CI);Phenol, 2,4-di-tert-butyl-,dihydrogen phosphite cyclic neopentanetetrayl ester (8CI);ADK Stab PEP 24;ADKStab PEP 24G;2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane,3,9-bis[2,4-bis(1,1-dimethylethyl)phenoxy]-;Antioxidant 626;Cyclicneopentanetetrayl bis(2,4-di-tert-butylphenyl phosphite);Di(2,4-di-tert-butylphenyl)pentaerythritol diphosphite;Doverphos S 9432;Irgafos 126;Irgafos 126FF;Mark PEP 24;Mark PEP 24G;Phos 5;Songnox6260;Ultranox 2879A;Ultranox 624;Ultranox 626;Weston 626;Weston MDW 626;
  • PSA 82.56000
  • LogP 9.86820

Antioxidant 24 Chemical Properties

 
IUPAC Name: 3,9-Bis(2,4-ditert-butylphenoxy)-2,4,8,10-tetraoxa-3, 9-diphosphaspiro[5.5]undecane
Molecular Formula: C33H50O6P2
Molecular Weight: 604.69 g/mol
SMILES: O2P(Oc1ccc(cc1C(C)(C)C)C(C)(C)C)OCC3(C2)COP(OC3)Oc4ccc(cc4C(C)(C)C)C(C)(C)C
InChI: InChI=1/C33H50O6P2/c1-29(2,3)23-13-15-27(25(17-23)31(7,8)9)38-40-34-19-33(20-35-40)21-36-41(37-22-33)39-28-16-14-24(30(4,5)6)18-26(28)32(10,11)12/h13-18H,19-22H2,1-12H3
EINECS: 247-952-5
Product Categories: Industrial / Fine Chemicals; Organics
Flash Point: 363.9 °C 
Enthalpy of Vaporization: 80.6 kJ/mol 
Boiling Point: 555.8 °C at 760 mmHg 
Melting Point: 160-178 °C
Vapour Pressure of Antioxidant 24 (CAS NO.26741-53-7): 8.01E-12 mmHg at 25 °C

Antioxidant 24 Toxicity Data With Reference

1.    

orl-rat LD50:5580 mg/kg

     EPASR*    United States Environmental Protection Agency, Office of Pesticides and Toxic Substances. (U.S. Environmental Protection Agency, 401M St., S.W., Washington, DC 20460) History Unknown 8EHQ-1287-0706 .
2.    

ihl-rat LC50:>2 g/m3

     EPASR*    United States Environmental Protection Agency, Office of Pesticides and Toxic Substances. (U.S. Environmental Protection Agency, 401M St., S.W., Washington, DC 20460) History Unknown 8EHQ-1287-0706 .
3.    

skn-rbt LD50:>200 mg/kg

     EPASR*    United States Environmental Protection Agency, Office of Pesticides and Toxic Substances. (U.S. Environmental Protection Agency, 401M St., S.W., Washington, DC 20460) History Unknown 8EHQ-1287-0706 .

Antioxidant 24 Consensus Reports

Reported in EPA TSCA Inventory.

Antioxidant 24 Safety Profile

Low toxicity by ingestion, inhalation, and skin contact. When heated to decomposition it emits toxic vapors of POx.

Antioxidant 24 Specification

 Antioxidant 24 (CAS NO.26741-53-7), its Synonyms are 3,9-Bis(2,4-bis(1,1-dimethylethyl)phenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro(5.5)undecane ; ADK Stab PEP 24 ; Mark pep 24 ; Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite ; Ultranox 626 ; 3,9-Bis(2,4-di-tert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane .

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