PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hexadecanoic acid; (Palmitic acid) | 57-10-3 |
8.00
7.01
4.05
4.07
4.01
4.02
3.08
16.02
|
||||||||||
| Formula | Synonyms | |||||||||||
| C16H32O2 | ||||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 256.48 | S | 0.849 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.19 | 2.1 | 12 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.018 | 0.20 | 1.1 |
Technical Basis
A review of available sources identified rat and mouse LD50 toxicity data for oral and intravenous routes. Data sources were selected according to the hierarchy listed in Table 3.1. Toxicity data were selected according to type of exposure, species, and route according to the hierarchies stated in Sections 3.3.1, 3.3.2 and evaluated using factors in Tables 3.2, 3.3, and 3.4. The rat oral LD50 is reported as a range, with a lower boundary (>10 g/kg) that is several orders of magnitude greater than the alternative (mouse LD50), which is certain point value. As such, the mouse intravenous LD50 was selected as the TEEL-3 basis. The TEEL-2 and TEEL-1 values were calculated according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Mouse intravenous LD50 (57 mg/kg)
This review generated TEEL values consistent with Rev. 29A*.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Mouse intravenous LD50 (57 mg/kg)
This review generated TEEL values consistent with Rev. 29A*.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Palmitic-Acid.
Mouse intravenous LD50: Acta Pharmacologica et Toxicologica., 18(141), 1961 [PMID:14482340]. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Palmitic-Acid.