Sodium ammonium phosphate tetrahydrate
Synonym(s):Ammonium sodium hydrogen phosphate, Microcosmic salt;Sodium ammonium hydrogen phosphate tetrahydrate
- CAS NO.：7783-13-3
- Empirical Formula: H13NNaO8P
- Molecular Weight: 209.07
- MDL number: MFCD00066970
- EINECS: 616-513-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-27 23:34:26
What is Sodium ammonium phosphate tetrahydrate?
Chemical properties
Colorless to white crystals or crystalline powder
The Uses of Sodium ammonium phosphate tetrahydrate
Used in the laboratory as an essential ingredient of the microcosmic salt bead test for identification of metallic radicals. Also used as intermediates. Finds application in chemical research.
General Description
Ammonium sodium phosphate dibasic tetrahydrate (Ammonium sodium hydrogen phosphate) is a colorless ammonium salt. On heating, it undergoes decomposition to afford sodium polyphosphate.
Properties of Sodium ammonium phosphate tetrahydrate
| Melting point: | 80 °C |
| Density | 1.54 |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| form | Solid |
| color | White |
| Specific Gravity | 1.544 |
| PH | 8.3 (50g/l, H2O, 20℃) |
| Water Solubility | Soluble in water. Insoluble in alcohol |
| CAS DataBase Reference | 7783-13-3 |
Safety information for Sodium ammonium phosphate tetrahydrate
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for Sodium ammonium phosphate tetrahydrate
Sodium ammonium phosphate tetrahydrate manufacturer
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