Ammonia
Ammonia
| Ammonia | |
|---|---|
 |
 |
Ammonia | |
| Àwọn orúkọ mìíràn | Ammonia Hydrogen nitride Spirit of Hartshorn Nitro-Sil Vaporole |
| Identifiers | |
| CAS number | 7664-41-7 |
| PubChem | 222 |
| EC number | 231-635-3 |
| nọ́mbà UN | 1005 (anhydrous) 2672, 2073, 3318 (solutions) |
| nọ́mbà RTECS | BO0875000 (anhydrous) BQ9625000 (solutions) |
| SMILES | N
|
| InChI | 1/H3N/h1H3
|
| InChI key | QGZKDVFQNNGYKY-UHFFFAOYAF |
| ChemSpider ID | 217 |
| Properties | |
| Molecular formula | NH3 |
| Molar mass | 17.031 g/mol |
| Appearance | Colorless gas with strong pungent odour |
| Density | 0.86 kg/m3 (1.013 bar at boiling point) 0.73 kg/m3 (1.013 bar at 15 °C) 681.9 kg/m3 at −33.3 °C (liquid)[1] 820 kg/m3 at -80 °C (crystal solid) 817 kg/m3 at -80 °C (transparent solid)[2] |
| Ojúàmì ìyọ́ |
−77.73 °C (195.42 K) |
| Ojúàmì ìhó |
−33.34 °C (239.81 K) |
| Solubility in water | 1176 g/100 mL (0 °C) 702 g/100 mL (20 °C) 88 g/100 mL (100 °C) |
| Acidity (pKa) | 38 (H2O) 41 (DMSO) |
| Basicity (pKb) | 4.75 |
| Structure | |
| Molecular shape | Trigonal pyramid |
| Dipole moment | 1.42 D |
| Hazards | |
| EU Index | 007-001-00-5 (anhydrous) 007-001-01-2 (solutions) |
| EU classification | Toxic (T) Corrosive (C) Dangerous for the environment (N) |
| R-phrases | Àdàkọ:R10, Àdàkọ:R23, R34, Àdàkọ:R50 |
| S-phrases | (S1/2), Àdàkọ:S9, S16, Àdàkọ:S26, Àdàkọ:S36/37/39, S45, Àdàkọ:S61 |
| NFPA 704 |
 1
3
0
|
| Flash point | flammable gas (see text) |
| Autoignition temperature |
651 °C |
| Explosive limits | 15–28% |
| U.S. Permissible exposure limit (PEL) |
50 ppm (25 ppm ACGIH- TLV; 35 ppm STEL) |
| Related compounds | |
| Other cations | Phosphine Arsine Stibine |
| Related nitrogen hydrides | Hydrazine Hydrazoic acid |
| Related compounds | Ammonium hydroxide |
 (what is this?) (verify)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
| Infobox references | |
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Itokasi àtúnṣe
- ↑ "Pure ammonia". Archived from the original on 2009-02-04. Retrieved 2009-07-07.
- ↑ Blum, Alexander (1975). "On crystalline character of transparent solid ammonia". Radiation Effects and Defects in Solids 24: 277. doi:10.1080/00337577508240819.