Guanidinium sulfate
| Names | |
|---|---|
| IUPAC name
Guanidinium sulfate
| |
| Other names
Carbamimidoylammonium sulfate
Carbamimidoylazanium sulfate Guanidine sulfate Guanidine, sulfuric acid salt | |
| Properties | |
| C2H12N6O4S (C(NH2)3)2SO4 | |
| Molar mass | 216.216 g/mol |
| Appearance | White solid |
| Odor | Odorless |
| Melting point | 290–293 °C (554–559 °F; 563–566 K) (decomposes) |
| Boiling point | Decomposes |
| Soluble | |
| Solubility | Almost insoluble in alcohol |
| Vapor pressure | ~0 mmHg |
| Hazards | |
| Safety data sheet | Sigma-Aldrich |
| Lethal dose or concentration (LD, LC): | |
| LD50 (Median dose)
|
475 mg/kg (rat, oral)[1] |
| Related compounds | |
| Related compounds
|
Guanidinium carbonate Guanidinium chloride Guanidinium nitrate Guanidinium perchlorate |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Guanidinium sulfate, incorrectly referred to as guanidine sulfate, is a colorless solid with the chemical formula C2H12N6O4S or (C(NH2)3)2SO4, often shorted to (Gdn)2SO4.
Contents
Properties
Chemical
Adding calcium nitrate to guanidinium sulfate will give guanidinium nitrate, while calcium sulfate precipitates out of the reaction:
- (C(NH2)3)2SO4 + Ca(NO3)2 → 2 C(NH2)3NO3 + CaSO4
Physical
Guanidinium sulfate is a white solid.
Availability
Guanidinium sulfate can be bought from chemical suppliers an online.
Preparation
Can be prepared from the complete neutralization of sulfuric acid with guanidine or guanidinium carbonate.
- 2 HNC(NH2)2 + H2SO4 → (C(NH2)3)2SO4
- (C(NH2)3)2CO3 + H2SO4 → (C(NH2)3)2SO4 + H2O + CO3
A less known route involves fusing urea with ammonium sulfamate in a 1:3 molar ratio. Ammonium sulfate is produced as secondary product.[2]
- 2 NH4SO3NH2 + 6 (NH2)2CO → (C(NH2)3)2SO4 + NH4SO4 + H2O + CO + N2
Projects
- Make other guanidinium compounds
- Make zinc guanidinium sulfate crystals[3]
Handling
Safety
There isn't much info about the toxicity of guanidinium sulfate, though it's best to handle it with care.
Storage
In closed bottles.
Disposal
No special disposal is required.
References
- ↑ http://www.minclinic.ru/drugs/drugs_eng/G/Guanidinium%20Sulfate.html
- ↑ https://www.google.com/patents/US2464247
- ↑ http://scripts.iucr.org/cgi-bin/paper?S0567740870002364
