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| CAS No.: | 20762-60-1 |
|---|---|
| Name: | potassium azide |
| Article Data: | 43 |
| Molecular Structure: | |
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| Formula: | KN3 |
| Molecular Weight: | 81.1184 |
| Synonyms: | Potassiumazide (6CI,8CI); PPG 101 |
| EINECS: | 244-013-1 |
| Density: | 2.040 |
| Melting Point: | 350oC |
| Solubility: | g/100g H2O: 41.4 (0°C), 50.8 (20°C), 61.0 (40°C), 106 (100°C) [LAN05] |
| Hazard Symbols: | T |
| Risk Codes: | 25 |
| Safety: | A poison by ingestion. Hydrolysis yields KOH which is toxic and irritating. When heated it explodes weakly releasing nitrogen. Explosive reaction with sulfur dioxide at 120°C. Reacts with carbon disulfide to form an explosive product. Reacts violently with manganese dioxide when warmed. When heated to decomposition it emits very toxic fumes of NOx and K2O. See also AZIDES. |
| PSA: | 49.75000 |
| LogP: | 0.21376 |
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Chemistry
Molecular Structure:
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Molecular Formula: KN3
Molecular Weight: 81.1184
IUPAC Name: Potassium Azide
Synonyms of Potassium Azide (CAS NO.20762-60-1): AI3-52879 ; Caswell No. 682B ; EINECS 244-013-1 ; EPA Pesticide Chemical Code 107702 ; Potassium azide (K(N3))
CAS NO: 20762-60-1
Uses
Potassium Azide (CAS NO.20762-60-1) has been found to act as a nitrification inhibitor in soil.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| bird - wild | LD50 | oral | 17800ug/kg (17.8mg/kg) | Archives of Environmental Contamination and Toxicology. Vol. 12, Pg. 355, 1983. | |
| rat | LD50 | oral | 27mg/kg (27mg/kg) | National Technical Information Service. Vol. PB85-143766, |
Safety Profile
A poison by ingestion. Hydrolysis yields KOH which is toxic and irritating. When heated it explodes weakly releasing nitrogen. Explosive reaction with sulfur dioxide at 120°C. Reacts with carbon disulfide to form an explosive product. Reacts violently with manganese dioxide when warmed. When heated to decomposition it emits very toxic fumes of NOx and K2O. See also AZIDES.
RIDADR of Potassium Azide (CAS NO.20762-60-1): 2811
HazardClass: 6.1(a)
PackingGroup: II
Specification
Potassium Azide (CAS NO.20762-60-1) is a colorless crystals. It is a salt of hydrazoic acid, and crystallizes in a tetragonal structure. Upon heating or irradiation with ultraviolet light, it decomposes into potassium metal and nitrogen gas. Unlike heavy-metal azides, it is not sensitive to shock, but may explode if heated rapidly.