Sodium azide
SIGMA/71289 - BioUltra, ≥99.5% (T)
Synonym: NaN3; Natrium azide
CAS Number: 26628-22-8
Empirical Formula (Hill Notation): N3Na
Molecular Weight: 65.01
EC Number: 247-852-1
MDL Number: MFCD00003536
Linear Formula: NaN3
Product Type: Chemical
| absorption | cut-off at 276 nm in H2O at 1 M |
| anion traces | chloride (Cl-): ≤50 mg/kg |
| sulfate (SO42-): ≤50 mg/kg | |
| assay | ≥99.5% (T) |
| cation traces | Al: ≤5 mg/kg |
| As: ≤0.1 mg/kg | |
| Ba: ≤5 mg/kg | |
| Bi: ≤5 mg/kg | |
| Ca: ≤50 mg/kg | |
| Cd: ≤5 mg/kg | |
| Co: ≤5 mg/kg | |
| Cr: ≤5 mg/kg | |
| Cu: ≤5 mg/kg | |
| Fe: ≤5 mg/kg | |
| K: ≤100 mg/kg | |
| Li: ≤5 mg/kg | |
| Mg: ≤10 mg/kg | |
| Mn: ≤5 mg/kg | |
| Mo: ≤5 mg/kg | |
| Ni: ≤5 mg/kg | |
| Pb: ≤5 mg/kg | |
| Sr: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| form | crystals |
| grade | reagent grade |
| impurities | insoluble matter, passes filter test |
| InChI | 1S/N3.Na/c1-3-2;/q-1;+1 |
| InChI key | PXIPVTKHYLBLMZ-UHFFFAOYSA |
| loss | ≤0.1% loss on drying, 105 °C, 4 h |
| pH | ~10.0 (25 °C, 1 M in H2O) |
| product line | BioUltra |
| Quality Level | 200  |
| SMILES string | [Na]N=[N+]=[N-] |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| Application: | Sodium azide has been used as a reagent: • in flow cytometry buffer • in bromodeoxyuridine (BrdU) labeling of synchronized hydroxyurea (HU)-arrested cells • to immobilize worms |
| Symbol |    GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H300 + H310 + H330 - H373 - H410 |
| Precautionary statements | P262 - P273 - P280 - P302 + P352 + P310 - P304 + P340 + P310 - P314 |
| Hazard Codes | T+,N |
| Risk Statements | 27-28-32-50/53 |
| Safety Statements | 28-36/37-45-60-61 |
| RIDADR | UN 1687 6.1 / PGII |
| WGK Germany | WGK 2 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Supplemental Hazard Statements | EUH032 |
| Purity | ≥99.5% (T) |
| UNSPSC | 12352302 |