PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Butyric acid; (n-Butyric acid) | 107-92-6 | 2820 |
14.01
4.01
11.01
14.02
4.05
7.01
8.00
11.00
4.09
4.06
|
|||||||||
| Formula | Synonyms | |||||||||||
| C4H8O2 | BUTYRIC ACID, 1-PROPANECARBOXYLIC ACID, ACIDE BUTYRIQUE (DOT FRENCH), ACIDO BUTÍRICO (DOT SPANISH), BUTANIC ACID, BUTANOIC ACID, ETHYLACETIC ACID, N-BUTANOIC ACID, N-BUTYRIC ACID, PROPANECARBOXYLIC ACID, PROPYLFORMIC ACID, UN 2820 | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 88.12 | L | -5.1 | 163.5 | 1.65 | 25 | 0.959 | 20000 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 6.0 | 66 | 400 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 1.7 | 18 | 110 |
Technical Basis
A review of available sources identified animal toxicity sources. 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. A rat oral LD50 was selected as the TEEL-3 basis. TEEL-2 and TEEL-1 values were derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat oral LD50 (2,000 mg/kg)
This review generated TEEL-3 values consistent with Rev. 29A. Current TEEL-2 and TEEL-1 values are less conservative than those reported in Rev. 29A. The Rev. 29A basis was a rat TCLo, however this source data was not identified during current research. Instead, the current TEEL-2 was derived from the TEEL-3. The TEEL-1 methodology is consistent, but due to difference in TEEL-2 the current value is less conservative.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat oral LD50 (2,000 mg/kg)
This review generated TEEL-3 values consistent with Rev. 29A. Current TEEL-2 and TEEL-1 values are less conservative than those reported in Rev. 29A. The Rev. 29A basis was a rat TCLo, however this source data was not identified during current research. Instead, the current TEEL-2 was derived from the TEEL-3. The TEEL-1 methodology is consistent, but due to difference in TEEL-2 the current value is less conservative.
References
Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure, Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982, -(30), 1982. National Center for Biotechnology Information (2023). PubChem Compound Summary for CID 264, Butyric Acid, Section 13.1.11. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Butyric-Acid