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SODIUM AZIDE
| CAS # | 26628-22-8 |
|---|---|
| Formula |
N₃Na |
| Synonyms |
azide; azium; sodium salt of hydrazoic acid |
| Physical description | Colorless to white, odorless, crystalline solid. | ||
|---|---|---|---|
| Boiling point | decomposes | Molecular weight | 65.02 |
| Freezing point/melting point | 527°F (decomposes to sodium and nitrogen) | Vapor pressure | |
| Flash point | Vapor density | ||
| Specific gravity | 1.85 | Ionization potential | 11.70 eV |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | 4 | NFPA fire rating | 1 |
| NFPA reactivity rating | 3 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | S113 |
|---|---|
| Sampling group | |
| Sampler/Sampling media | Silica gel tube(150/75 mg) impregnated with NaOH, a pre-filter is used to collect particulate azide [SKC 226-55 & SKC 225-802] |
| Sampling time* | 5 min minimum |
| Sampling volume (TWA)* | 5 L minimum |
| Sampling flow rate (TWA)* | 1 L/min |
| Sampling volume (STEL/Peak/C)* | |
| Sampling flow rate (STEL/Peak/C)* | |
| Analytical method instruments | IC |
| Method reference | OSHA ID-211 (fully validated) |
| Notes | Keep samples refrigerated when not in transit. Ship samples overnight with cold-packs as soon as possible. |
| Special requirements |
* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
| Wipe Sampler/Sampling media | |
|---|---|
| Bulk Method |
| Device | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
|
Sampling information (see manufacturer instructions) |
|
OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
|||||
|---|---|---|---|---|---|---|---|
| PEL-TWA | REL-TWA | TLV-TWA | PEL-TWA | ||||
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C |
0.1 ppm (0.3 mg/m³) (as HN3), 0.3 mg/m³ (as NaN3) |
TLV-C |
0.29 mg/m³ (as Sodium azide), 0.11 ppm (as Hydrazoic acid vapor) [1992] |
PEL-C |
0.1 ppm (0.3 mg/m³) |
|
| Skin notation |
NA |
Skin notation |
Y |
Skin notation |
N |
Skin notation |
Y |
|
Notes:
Not established |
Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: TLV-A4 | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Sodium azide NIOSH: Pocket Guide to Chemical Hazards - Sodium azide Literature References
|
Last Updated Date : 09/22/2022