Molekula
Sodium Azide Pharma Grade
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Sodium azide is a highly reactive inorganic compound primarily used as a reagent in analytical chemistry, a precursor in pharmaceutical synthesis, and as a preservative in biological samples. It is also employed in airbag systems for rapid gas generation. This pharma-grade sodium azide has a CAS number of 26628-22-8, with the molecular formula N₃Na and a molecular weight of 65.01 g/mol. It is stored at ambient conditions but requires careful handling due to its hazardous nature, marked by a "Danger" signal word. Molekula supplies Sodium Azide Pharma Grade from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White powder |
| Heavy metals | ≤ 10 ppm |
| pH | ≥ 9.5 |
| Chloride (Cl-) | ≤ 0.05 % |
| Solubility | Solubility (40mg/mL) |
| Turbidity | ≤ 10 |
| Insoluble Matter | ≤ 0.02 % |
| Particle Size | ≤ 325 μm |
| Moisture | ≤ 0.1 % |
| Assay (Titration) | ≥ 99.5 % |
| Alkalinity | ≤ 0.1 % |
| Iron (Fe) | ≤ 10 ppm |
| Sodium carbonate (Na2CO3) | ≤ 0.15 % |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | II |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless hexagonal crystals |
| Melting Point | 275 °C (decomp) |
| Density | 1.85 (relative, water = 1) |
| Solubility (other solvents) | Highly soluble in water. Rapidly converted to hydrazoic acid ... Solubility in water: 40.16% at 10 °C; 41.7% at 17 °C |
| Vapour Pressure | 1 Pa at 20 °C |
Source: PubChem CID 33557 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90027679 |
| CAS Number | 26628-22-8 |
| IUPAC Name | sodium azide |
| EC Number | 247-852-1 |
| Molecular Formula | N3Na |
| Molecular Weight | 65.01 |
| Exact Mass | 64.999 |
| SMILES | [N-]=[N+]=[N-].[Na+] |
| InChIKey | PXIPVTKHYLBLMZ-UHFFFAOYSA-N |
| InChI | InChI=1S/N3.Na/c1-3-2;/q-1;+1 |
| PubChem CID | 33557 |
| UN Number | UN1687 |
| REACH Code | Y106 |
| TSCA Listed | Yes |
| HTS Code | 2850.00.5000 |
| Tariff Code | 2850006010 |
Safety & GHS
-
Toxic
GHS06
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- EUH032 Contact with acids liberates very toxic gas
- H300 +H310 + H330 Fatal if swallowed, in contact with skin or if inhaled
- H373 May cause damage to organs through prolonged or repeated exposure
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P250 Do not subject to grinding/shock/friction
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P310 Immediately call a POISON CENTER or doctor/physician
Documents
Safety Data Sheets (SDS)
Available in English, English (US), German.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Azide, sodium
- Azoture de sodium
- Azydek sodu
- Hydrazoic acid sodium salt
- Kazoe
- Natriumazid
- Natriummazide
- Nemazyd
- sodium azide
- Sodium, azoture de
Frequently asked questions
What is sodium azide used for in pharmaceutical applications?
In pharmaceutical manufacturing, sodium azide is primarily used as a synthetic reagent, for example to form the tetrazole ring in sartan antihypertensives such as losartan and valsartan. Because it is acutely toxic, it is not used as a preservative in drug products. It is also employed in diagnostic kits and biochemical assays due to its ability to inhibit bacterial growth.
What is the chemical formula and molecular weight of sodium azide?
The chemical formula is N₃Na, and the molecular weight is 65.01 g/mol.
How should sodium azide (pharma grade) be stored?
Store at ambient temperature in a cool, dry place, away from incompatible substances like acids or heavy metals. Ensure proper ventilation due to its toxic and explosive decomposition hazards.
What purity grade of sodium azide does Molekula supply, and is it suitable for pharmaceutical use?
Molekula supplies pharma-grade sodium azide, meeting strict purity and quality standards (typically ≥99.0%) for pharmaceutical formulations, diagnostics, and regulated applications.
Can Molekula supply sodium azide in bulk quantities for large-scale pharmaceutical production?
Yes, Molekula can supply sodium azide in bulk quantities (e.g., drums, totes) to meet industrial and large-scale pharmaceutical manufacturing needs, subject to order volume and compliance requirements.
What documentation is provided with a sodium azide order for pharmaceutical use?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS/SDS), and pharma-grade compliance documentation (e.g., USP/EP/BP where applicable) to ensure traceability and regulatory adherence.
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