Name | Aminoguanidine bicarbonate |
Synonyms | Aminoguanidine hicarbonate 1-aminoguanidine carbonate Aminoguanidine bicarbonate GUANYLHYDRAZINE BICARBONATE Aminoguanidine bicarbonate Aminoguanidine carbonic acid 1-AMINOGUANIDINE BICARBONATE Aminoguanidine hydrogen carbonate 1-AMINOGUANIDINE HYDROGEN CARBONATE aminoguanidinium hydrogen carbonate 1-AMINOGUANIDINIUM HYDROGEN CARBONATE AMINOGUANIDINE BICARBONATE CRYSTALLINE 1-AMINOGUANIDINIUM HYDROGEN CARBONATE OE |
CAS | 2582-30-1 |
EINECS | 219-956-7 |
InChI | InChI=1/CH6N4.CH2O3/c2-1(3)5-4;2-1(3)4/h4H2,(H4,2,3,5);(H2,2,3,4)/p-2 |
InChIKey | OTXHZHQQWQTQMW-UHFFFAOYSA-N |
Molecular Formula | C2H8N4O3 |
Molar Mass | 136.11 |
Density | 1,6 g/cm3 |
Melting Point | 170-172°C (dec.)(lit.) |
Boling Point | 422.4°C at 760 mmHg |
Flash Point | 209.3°C |
Water Solubility | <5 g/L (20 ºC) |
Solubility | H2O: soluble2.7g/L at 20°C |
Vapor Presure | 2.56E-08mmHg at 25°C |
Appearance | Crystalline Powder |
Color | White to off-white |
BRN | 3569869 |
pKa | 6.19[at 20 ℃] |
PH | 8.9 (5g/l, H2O, 20℃) |
Storage Condition | Store below +30°C. |
Physical and Chemical Properties | White fine crystalline powder. Soft, practically insoluble in water. Insoluble in alcohol and other acids. It is unstable when heated, and gradually decomposes when it exceeds 50 ° C., turns red when it is heated to 100 ° C. In an oil bath, and decomposes completely when it is heated to 171-173 ° C. As shown in Fig. |
Use | It can be used as raw materials for the synthesis of pharmaceuticals, pesticides, dyes, foaming agents and explosives. |
Risk Codes | R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R43 - May cause sensitization by skin contact R36/37/38 - Irritating to eyes, respiratory system and skin. R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S37 - Wear suitable gloves. S24 - Avoid contact with skin. S36 - Wear suitable protective clothing. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 - Wear suitable protective clothing and gloves. |
UN IDs | UN3077 |
WGK Germany | 2 |
RTECS | FG1772000 |
TSCA | Yes |
HS Code | 29280090 |
Hazard Class | 9 |
Packing Group | III |
Toxicity | LD50 orally in Rabbit: > 5000 mg/kg |
White fine crystalline powder. Soft, practically insoluble in water, insoluble in alcohol and other acids. Heating is not stable, when more than 45 degrees Celsius is gradually decomposed, melting point of 170~172 degrees Celsius. If it is heated slowly, it can be melted. When it is heated to 171~173 ° C in an oil bath, it will be completely decomposed. The decomposition products are soluble in water and can be decomposed by other acids, free aminoguanidine is formed and dissolved in water.
there are the following process routes.
This product can be used as a synthetic raw material for medicine, pesticide, dye, photographic agent, foaming agent and explosive.
LogP | -6.61 at 25℃ |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
use | can be used as a synthetic raw material for medicine, pesticide, dye, foaming agent and explosive this product can be used as a synthetic raw material for medicine, pesticide, dye, photographic agent, foaming agent and explosive. |
production method | 1. made from lime nitrogen, hydrazine hydrate, ammonium bicarbonate or sodium bicarbonate. First, distilled water is added to lime nitrogen, kept at 45-50 ℃ for 6 hours, waste residue is filtered to obtain cyanamide (calcium) solution, then dilute sulfuric acid is added to cyanamide (calcium) solution to pH = 6-7, cooled to room temperature, and calcium sulfate is filtered to obtain cyanamide solution. Then 5% hydrazine hydrate is added to cyanamide solution, kept at 50 ℃ for 4 hours, then ammonium bicarbonate is added, and crystals are precipitated, filter to dry is crude aminoguanidine bicarbonate. Dissolve the crude with acetic acid, add oxalic acid, filter to remove calcium oxalate, adjust the solution to pH = 8-9 with ammonia water, add a little EDTA disodium, filter to be clear, then add filtered ammonium bicarbonate solution, place, crystallize, filter to dry, wash with distilled water and ethanol respectively, and filter to dry to obtain the finished product. 2. Condensation reaction of methyl isothiourea sulfate, hydrazine hydrate and sodium bicarbonate: dissolve methyl isothiourea sulfate in water, add hydrazine hydrate dropwise at room temperature, continue to stir for 1.5h after addition, and filter. The filtrate is concentrated to 2/5 of the original volume under reduced pressure, then the pH is adjusted to 5 with acetic acid, cooled to below 30 ℃, saturated bicarbonate solution is added under stirring, the material is released after stirring for 2 hours, cooled overnight, filtered, the filter cake is first washed with water, then washed with ethanol, and dried at 50 ℃ to obtain aminoganidine bicarbonate. Yield 85%-90%. 3. Use cyanamide and hydrazine sulfate to react, and then add sodium bicarbonate aqueous solution to react, and aminoguanidine bicarbonate can also be prepared. |
spontaneous combustion temperature | 245°C |