PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sodium azide | 26628-22-8 | 1687 |
6.00
15.01
4.01
11.01
15.02
4.08
4.05
7.01
8.00
7.00
|
|||||||||
| Formula | Synonyms | |||||||||||
| N3.Na | SODIUM AZIDE, AZIDA DE SODIO (DOT SPANISH), AZIDE, AZIUM, AZOTURE DE SODIUM (DOT FRENCH), HYDRAZOIC ACID, SODIUM SALT, KAZOE, NCI-C06462, NEMAZYD, NSC 3072, RCRA WASTE NUMBER P105, SMITE, SODIUM AZIDE (NA(N3)), SODIUM SALT OF HYDRAZOIC ACID, U-3886, UN 1687 | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 65.01 | S | 20 | 1.846 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.026 | 0.29 | 8.8 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.0098 | 0.11 | 3.3 |
Technical Basis
A review of available sources identified exposure limits (TLV-C, PEL-C, REL-C) and five different doses of human toxicity data (LDLo,TDLo) in addition to animal acute toxicity data. 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 lowest dose human LDLo, a woman oral LDLo (14 mg/kg), was selected as the TEEL-3 basis. The TLV-C was selected as the TEEL-2. The TEEL-1 value was derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TLV-C (0.29 mg/m3)
• TEEL-3 = Human (female) oral LDLo (14 mg/kg)
This review generated TEEL-2 and TEEL-1 values consistent with Rev. 29A and TEEL-3 values inconsistent with Rev. 29A. The Rev. 29A TEEL-3 basis was a rat oral LD50 while the current basis prioritizes human toxicity (Section 3.3.2).
• TEEL-1 = TEEL-2/11
• TEEL-2 = TLV-C (0.29 mg/m3)
• TEEL-3 = Human (female) oral LDLo (14 mg/kg)
This review generated TEEL-2 and TEEL-1 values consistent with Rev. 29A and TEEL-3 values inconsistent with Rev. 29A. The Rev. 29A TEEL-3 basis was a rat oral LD50 while the current basis prioritizes human toxicity (Section 3.3.2).
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Sodium-azide
Woman LDLo (14 mg/kg). Journal of Forensic Sciences., 35(193), 1990. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Sodium-azide
Exposure limits: https://www.osha.gov/chemicaldata/331