PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chlorothalonil; (Tetrachloroisophthalonitrile) | 1897-45-6 |
2.00
15.01
4.01
11.01
15.02
8.00
7.00
11.00
4.09
4.10
|
||||||||||
| Formula | Synonyms | |||||||||||
| C8.Cl4.N2 | CHLOROTHALONIL, 1,3-BENZENEDICARBONITRILE, 2,4,5,6-TETRACHLORO-, 1,3-DICYANOTETRACHLOROBENZENE, 2,4,5,6-TETRACHLORO-1,3-DICYANOBENZENE, 2,4,5,6-TETRACHLORO-1,3-ISOPHTHALONITRILE, 2,4,5,6-TETRACHLOROISOPHTHALONITRILE, BRAVO, BRAVO 500, BRAVO 6F, BRAVO ULTREX, BRAVO-W-75, BRAVONIL, CHLOROALONIL, CLORTOSIP, CLORTOSIP 500SC, CLORTOSIP L, DAC 2787, DACONIL, DACONIL 2787, DACONIL 2787WP, DACONIL F, DACONIL M, DACOSOIL, EXOTHERM, FORTURF, ISOPHTHALONITRILE, 2,4,5,6-TETRACHLORO-, ISOPHTHALONITRILE, TETRACHLORO-, KABIGUARD 164SA, KAVACH, M-TCPN, M-TETRACHLOROPHTHALONITRILE, NCI-C00102, NEXGEN, NOPCOCIDE, NOPCOCIDE 54DB, NOPCOCIDE N 54D, NOPCOCIDE N 96, SWEEP, TERMIL, TETRACHLOROBENZENE-1,3-DICARBONITRILE, TETRACHLOROISOPHTHALONITRILE, THALONIL, TPN, TPN (PESTICIDE), VANOX, VANOX 500SC, VANOX 750PM | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 265.9 | S | 350 | 0.00000057 | 25 | 2.8 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.067 | 0.73 | 4.4 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.0062 | 0.067 | 0.40 |
Technical Basis
A review of available sources identified acute toxicity data (LC50, LD50¬) for several species. 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. Inhalation exposures were scaled to 60-minute equivalents using the ten Berge equation (Section 3.3.4). The lowest dose rat LC50, 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 LC50 (0.1 mg/L/4H)
This review generated TEEL values inconsistent with Rev. 29A values. The Rev. 29A TEEL-3 basis was a rat LC50 (300 mg/m3/1H), while the current basis (0.1 mg/L/4H) results in a more conservative TEEL-3 (Section 3.3.1). The Rev. 29A and current TEEL-2/TEEL-1 used the same methodology, with difference in values due to the change in TEEL-3.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat LC50 (0.1 mg/L/4H)
This review generated TEEL values inconsistent with Rev. 29A values. The Rev. 29A TEEL-3 basis was a rat LC50 (300 mg/m3/1H), while the current basis (0.1 mg/L/4H) results in a more conservative TEEL-3 (Section 3.3.1). The Rev. 29A and current TEEL-2/TEEL-1 used the same methodology, with difference in values due to the change in TEEL-3.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Chlorothalonil
Rat LC50 (1991, 300 mg/m3/1H). Farm Chemicals Handbook., (C72), 1991. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Chlorothalonil
Rat LC50 (1992, 0.1 mg/L/4H; EPA OPP 81-3 (Acute inhalation toxicity). Retrieved from: https://echa.europa.eu/registration-dossier/-/registered-dossier/32255/7/3/3