2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane, 3,9-bis[2,4-bis(1,1-dimethylethyl)phenoxy]-
Names
[ CAS No. ]:
26741-53-7
[ Name ]:
2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane, 3,9-bis[2,4-bis(1,1-dimethylethyl)phenoxy]-
[Synonym ]:
THP-24
EINECS 247-952-5
3,9-Bis[2,4-bis(2-methyl-2-propanyl)phenoxy]-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane
2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane, 3,9-bis[2,4-bis(1,1-dimethylethyl)phenoxy]-
Alkanox-P-24
bis(2,4-Di-tert-butylphenyl)pentaerythritol diphosphite
3,9-Bis(2,4-di-tert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane
ADK Stab PEP 24
Antioxidant AT-626
mark pep 24
Ultranox 626
Chemical & Physical Properties
[ Boiling Point ]:
555.8±50.0 °C at 760 mmHg
[ Melting Point ]:
160-178ºC
[ Molecular Formula ]:
C33H50O6P2
[ Molecular Weight ]:
604.694
[ Flash Point ]:
363.9±30.4 °C
[ Exact Mass ]:
604.308289
[ PSA ]:
82.56000
[ LogP ]:
11.76
[ Vapour Pressure ]:
0.0±1.4 mmHg at 25°C
Toxicological Information
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- TG7400000
- CHEMICAL NAME :
- Phosphorous acid, cyclic neopentanetetrayl bis(2,4-di-tert-butylphenyl)ester
- CAS REGISTRY NUMBER :
- 26741-53-7
- LAST UPDATED :
- 199710
- DATA ITEMS CITED :
- 6
- MOLECULAR FORMULA :
- C33-H50-O6-P2
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 5580 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- EPASR* United States Environmental Protection Agency, Office of Pesticides and Toxic Substances. (U.S. Environmental Protection Agency, 401 M St., SW, Washington, DC 20460) History unknown. Volume(issue)/page/year: 8EHQ-1287-0706
- TYPE OF TEST :
- LC50 - Lethal concentration, 50 percent kill
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- >2 gm/m3
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- EPASR* United States Environmental Protection Agency, Office of Pesticides and Toxic Substances. (U.S. Environmental Protection Agency, 401 M St., SW, Washington, DC 20460) History unknown. Volume(issue)/page/year: 8EHQ-1287-0706
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Administration onto the skin
- SPECIES OBSERVED :
- Rodent - rabbit
- DOSE/DURATION :
- >200 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- EPASR* United States Environmental Protection Agency, Office of Pesticides and Toxic Substances. (U.S. Environmental Protection Agency, 401 M St., SW, Washington, DC 20460) History unknown. Volume(issue)/page/year: 8EHQ-1287-0706 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - E0783 No. of Facilities: 66 (estimated) No. of Industries: 4 No. of Occupations: 8 No. of Employees: 3046 (estimated) No. of Female Employees: 2303 (estimated)
Safety Information
[ Hazard Codes ]:
Xi