2H-Pyran-2-carboxaldehyde,3,4-dihydro-2,5-dimethyl-
Names
[ CAS No. ]:
1920-21-4
[ Name ]:
2H-Pyran-2-carboxaldehyde,3,4-dihydro-2,5-dimethyl-
[Synonym ]:
2H-Pyran-2-carboxaldehyde,3,4-dihydro-2,5-dimethyl
Methacrylaldehyde dimer
2,5-dimethyl-3,4-dihydro-2H-pyran-2-carbaldehyde
3,4-dihydro-2,5-dimethyl-2H-pyran-2-carboxaldehyde
3,4-Dihydro-2,5-dimethyl-2H-pyran-2-carbaldehyde
Methacrolein dimer
1,4-Pyran,2,3-dihydro-2,5-dimethyl-2-formyl
2,3-Dihydro-2,5-dimethyl-2-formyl-1,4-pyran
EINECS 217-647-1
Chemical & Physical Properties
[ Density]:
1.047g/cm3
[ Boiling Point ]:
201.4ºC at 760 mmHg
[ Molecular Formula ]:
C8H12O2
[ Molecular Weight ]:
140.18000
[ Flash Point ]:
74.1ºC
[ Exact Mass ]:
140.08400
[ PSA ]:
26.30000
[ LogP ]:
1.65820
[ Vapour Pressure ]:
0.308mmHg at 25°C
[ Index of Refraction ]:
1.512
Toxicological Information
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- UP7875000
- CHEMICAL NAME :
- 1,4-Pyran, 2,3-dihydro-2,5-dimethyl-2-formyl-
- CAS REGISTRY NUMBER :
- 1920-21-4
- BEILSTEIN REFERENCE NO. :
- 0114546
- LAST UPDATED :
- 199806
- DATA ITEMS CITED :
- 3
- MOLECULAR FORMULA :
- C8-H12-O2
- MOLECULAR WEIGHT :
- 140.20
- WISWESSER LINE NOTATION :
- T6O BUTJ C1 FVH F1
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
- TYPE OF TEST :
- Standard Draize test
- ROUTE OF EXPOSURE :
- Administration onto the skin
- SPECIES OBSERVED :
- Rodent - rabbit
- REFERENCE :
- 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,803,1986
- TYPE OF TEST :
- Standard Draize test
- ROUTE OF EXPOSURE :
- Administration into the eye
- SPECIES OBSERVED :
- Rodent - rabbit
- REFERENCE :
- 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,803,1986 ** ACUTE TOXICITY DATA **
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 2460 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- AMIHBC AMA Archives of Industrial Hygiene and Occupational Medicine. (Chicago, IL) V.2-10, 1950-54. For publisher information, see AEHLAU. Volume(issue)/page/year: 10,61,1954