PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chloroacetaldehyde dimethyl acetal | 97-97-2 |
4.00
3.00
|
||||||||||
| Formula | Synonyms | |||||||||||
| C4.H9.Cl.O2 | ||||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 124.5669 | L | 127.5 | 1.4150 @ 20°C |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.79 | 8.7 | 52 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.16 | 1.7 | 10 |
Technical Basis
A review of available sources identified a rat oral LDLo that was selected as the TEEL-3 basis and evaluated using factors in Tables 3.2, 3.3, and 3.4. TEEL-1 and TEEL-2 values were derived according to Table 3.5.
• PAC-1 = TEEL-1 = TEEL-2/11
• PAC-2 = TEEL-2 = TEEL-3/6
• PAC-3 = TEEL-3 = Rat oral LDLo (200 mg/kg)
This review generated PAC values inconsistent with Rev. 29A. The Rev. 29A TEEL-3 was based on an HHR=2; however, this review used a chemical specific rat oral LDLo. The Rev. 29A and current TEEL-2 and TEEL-1 methodology remains consistent, with differences due to the change of the TEEL-3 basis.
• PAC-1 = TEEL-1 = TEEL-2/11
• PAC-2 = TEEL-2 = TEEL-3/6
• PAC-3 = TEEL-3 = Rat oral LDLo (200 mg/kg)
This review generated PAC values inconsistent with Rev. 29A. The Rev. 29A TEEL-3 was based on an HHR=2; however, this review used a chemical specific rat oral LDLo. The Rev. 29A and current TEEL-2 and TEEL-1 methodology remains consistent, with differences due to the change of the TEEL-3 basis.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/2-Chloro-1_1-dimethoxyethane
Rat oral LDLo: https://echa.europa.eu/de/registration-dossier/-/registered-dossier/17184/7/3/2//