PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Potassium perchlorate | 7778-74-7 | 1489 |
13.00
14.01
11.01
14.02
11.00
4.09
4.06
4.07
12.00
5.10
|
|||||||||
| Formula | Synonyms | |||||||||||
| K.Cl.O4 | POTASSIUM PERCHLORATE, PERCHLORATE DE POTASSIUM (DOT FRENCH), PERCLORATO DE POTASIO (DOT SPANISH), PEROIDIN, POTASSIUM PERCHLORATE (KCLO4), SPECTREX FIRE EXTINGUISHANT FORMULATION A | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 138.55 | S | 2.52 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 5.9 | 65 | 390 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 1.0 | 11 | 69 |
Technical Basis
A review of limited sources for potassium perchlorate identified mouse oral LD50 acute toxicity data. This toxicity data was selected as the TEEL-3 basis and evaluated using factors in Tables 3.2, 3.3, and 3.4. 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 LD50 (3,621 mg/kg/day)
This review generated TEEL values inconsistent with Rev. 29A. The Rev. 29A TEEL-3 was a TEEL-3 for a similar chemical (sodium perchlorate, CASRN: 7601-89-0). The current TEEL-3 basis is toxicity data, mouse oral LD50, for potassium perchlorate resulting in a slightly lower TEEL-3 value. The Rev. 29A and current methodology used to derive TEEL-2 and TEEL-1 are the same, with different due to the change in TEEL-3.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Mouse oral LD50 (3,621 mg/kg/day)
This review generated TEEL values inconsistent with Rev. 29A. The Rev. 29A TEEL-3 was a TEEL-3 for a similar chemical (sodium perchlorate, CASRN: 7601-89-0). The current TEEL-3 basis is toxicity data, mouse oral LD50, for potassium perchlorate resulting in a slightly lower TEEL-3 value. The Rev. 29A and current methodology used to derive TEEL-2 and TEEL-1 are the same, with different due to the change in TEEL-3.
References
https://pubchem.ncbi.nlm.nih.gov/compound/Potassium-Perchlorate.
Mouse LD50. See row 1 of Table 3-2, retrieved from: https://www.atsdr.cdc.gov/ToxProfiles/tp162.pdf