PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chloronaphthalene, 1-; (alpha-Chloronaphthalene) | 90-13-1 |
15.01
11.01
3.11
3.10
7.01
4.07
15.02
12.00
6.00
3.09
|
||||||||||
| Formula | Synonyms | |||||||||||
| C10H7Cl | 1-CHLORONAPHTHALENE, 1-NAPHTHALENYL CHLORIDE, 1-NAPHTHYL CHLORIDE, ALPHA-CHLORNAPHTHALENE, ALPHA-CHLORONAPHTHALENE, ALPHA-NAPHTHYL CHLORIDE, NAPHTHYLENE, 1-CHLORO- | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 162.62 | L | -2.5 | 259 | 14 | 1.188 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.60 | 51 | 310 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.090 | 7.7 | 47 |
Technical Basis
A review of available sources identified rat and mouse oral LD50 toxicity data, and exposure limits (OEL-TWAs, OEL-STEL). 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 most preferred species data, rat oral LD50, was selected as the TEEL-3 basis. The TEEL-2 value was derived according to Table 3.5. The OEL-STEL (Austria) was selected as the TEEL-1.
• PAC-1 = TEEL-1 = OEL-STEL (Austria, 0.6 mg/m3)
• PAC-2 = TEEL-2 = TEEL-3/6
• PAC-3 = TEEL-3 = Rat oral LD50 (1540 mg/kg)
This review generated PAC-3 and PAC-2 values consistent with Rev. 29A, and an inconsistent PAC-1 value. The Rev. 29A and current TEEL-3 and TEEL-2 values, sources, and methodology remain consistent. The Rev. 29A TEEL-1 was derived from the TEEL-2 (Table 3.5), while the current TEEL-1 is an exposure limit, OEL-STEL.
• PAC-1 = TEEL-1 = OEL-STEL (Austria, 0.6 mg/m3)
• PAC-2 = TEEL-2 = TEEL-3/6
• PAC-3 = TEEL-3 = Rat oral LD50 (1540 mg/kg)
This review generated PAC-3 and PAC-2 values consistent with Rev. 29A, and an inconsistent PAC-1 value. The Rev. 29A and current TEEL-3 and TEEL-2 values, sources, and methodology remain consistent. The Rev. 29A TEEL-1 was derived from the TEEL-2 (Table 3.5), while the current TEEL-1 is an exposure limit, OEL-STEL.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/1-Chloronaphthalene
OEL-STEL: https://ilv.ifa.dguv.de/limitvalues/12912
Rat oral LD50: Aerospace Medical Research Laboratory Report., TR-72-62(1972). Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/1-Chloronaphthalene