PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Phenylenediamine, 1,4-; (p-Phenylenediamine) | 106-50-3 | 1673 |
13.00
15.01
4.01
11.01
15.02
4.08
4.05
7.01
8.00
11.00
|
|||||||||
| Formula | Synonyms | |||||||||||
| C6H8N2 | P-PHENYLENEDIAMINE, 1,4-BENZENEDIAMINE, 1,4-DIAMINOBENZENE, 1,4-DIAMINOBENZOL, 1,4-PHENYLENE DIAMINE, 1,4-PHENYLENEDIAMINE, 4-AMINOANILINE, 6PPD, BASF URSOL D, BENZOFUR D, BLACK FOR FUR D, C.I. 76060, C.I. DEVELOPER 13, C.I. OXIDATION BASE 10, C.I. 76060, C.I. DEVELOPER 13, C.I. OXIDATION BASE 10, DEVELOPER 13, DEVELOPER PF, DURAFUR BLACK R, FOURAMINE D, FOURRINE 1, FOURRINE D, FOURRINE I, FUR BLACK 41867, FUR BLACK R, FUR BROWN 41866, FUR YELLOW, FURRO D, FUTRAMINE D, MAKO H, NAKO H, ORSIN, OXIDATION BASE 10, P-AMINOANILINE, P-BENZENEDIAMINE, P-DIAMINOBENZENE, PARA, PARA, SOLID (DOT), PARAPHENYLEN-DIAMINE, PELAGOL D, PELAGOL DR, PELAGOL GREY D, PELTOL D, PHENYLENEDIAMINE, PPD, RENAL PF, SANTOFLEX IC, TERTRAL D, URSOL D, USAF EK-391, ZOBA BLACK D | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 108.14 | S | 141.1 | 267 | 21 | >1 no temp |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.30 | 4.2 | 25 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.068 | 0.95 | 5.7 |
Technical Basis
A review of available sources identified exposure limits (IDLH, TWAs) and acute toxicity data (LC50, LD50, LDLo) for several species and 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. Inhalation exposures were scaled to 60-minute equivalents using the ten Berge equation (Section 3.3.4). The IDLH (1990, 1994) was selected as the TEEL-3. The TEEL-2 value was derived according to Table 3.5. The TLV-TWA was selected as the TEEL-1 basis.
• TEEL-1 = TLV-TWA (0.1 mg/m3) x 3
• TEEL-2 = TEEL-3/6
• TEEL-3 = IDLH (1990/1994, 25 mg/m3)
This review generated TEEL-3 and TEEL-2 values that are inconsistent with Rev. 29A. The Rev. 29A TEEL-3 basis was rat LC50 while the current TEEL-3 source is an IDLH, a more preferred source (Table 3.1). The Rev. 29A and current TEEL-2 use the same methodology, with differences due to the change in TEEL-3. The Rev. 29A and current TEEL-1 values, source, and methodology are consistent.
• TEEL-1 = TLV-TWA (0.1 mg/m3) x 3
• TEEL-2 = TEEL-3/6
• TEEL-3 = IDLH (1990/1994, 25 mg/m3)
This review generated TEEL-3 and TEEL-2 values that are inconsistent with Rev. 29A. The Rev. 29A TEEL-3 basis was rat LC50 while the current TEEL-3 source is an IDLH, a more preferred source (Table 3.1). The Rev. 29A and current TEEL-2 use the same methodology, with differences due to the change in TEEL-3. The Rev. 29A and current TEEL-1 values, source, and methodology are consistent.
References
Chemical information and acute toxicity data: https://pubchem.ncbi.nlm.nih.gov/compound/p-Phenylenediamine
IDLH (1990/1994): https://www.cdc.gov/niosh/idlh/106503.html
Exposure limits (TWAs): https://www.osha.gov/chemicaldata/43