PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Naphthol-6-sulfonic acid, 6-; (Schaeffer's acid) | 93-01-6 |
4.01
11.01
14.02
7.01
11.00
4.07
|
||||||||||
| Formula | Synonyms | |||||||||||
| C10H8O4S | ||||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 224.24 | S | 125 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.54 | 6.0 | 36 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.059 | 0.65 | 3.9 |
Technical Basis
A review of limited sources identified mouse acute toxicity data (LDLo). 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 route data, a mouse oral LDLo 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 = Mouse oral LDLo (250 mg/kg)
This review generated TEEL values that are consistent with Rev. 29A; however, TEEL-1 sources are inconsistent. The Rev. 29A TEEL-1 basis is reported as a TLV-TWA x 3; during the current review, a TLV-TWA for 6-naphthol-6-sulfonic acid could not be found. Instead, the current value was derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Mouse oral LDLo (250 mg/kg)
This review generated TEEL values that are consistent with Rev. 29A; however, TEEL-1 sources are inconsistent. The Rev. 29A TEEL-1 basis is reported as a TLV-TWA x 3; during the current review, a TLV-TWA for 6-naphthol-6-sulfonic acid could not be found. Instead, the current value was derived according to Table 3.5.
References
Zeitschrift fuer Hygiene und Infektionskrankheiten., 64(113), 1909. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/2-Naphthol-6-sulfonic-acid