1. Appearance: white or slightly yellow lumps
2. Melting point (℃): 181-183
3. Relative density (g/mL, 20/4℃): 1.354
4. Solubility: 228g can be dissolved in 100g of water at 20°C, 76g can be dissolved in 100g of methanol, and 24g can be dissolved in 100g of ethanol. Almost insoluble in acetone, benzene and ether.
5. pH value (4% aqueous solution, 25℃): 6.4
Guanidine Hydrochloride Uses:
1. It can be used as intermediates in medicine, pesticide, dye and other organic synthesis. It can be used to synthesize 2-aminopyrimidine, 2-amino-6-methylpyrimidine, 2-amino-4,6-dimethylpyrimidine, and is used for the manufacture of sulfadiazine, sulfamethazine, sulfamethazine and other sulfa drugs. Intermediate.
2. Guanidine hydrochloride (or guanidine nitrate) reacts with ethyl cyanoacetate to form 2,4-diamino-6-hydroxypyrimidine, which is used to synthesize the anti-anemia drug folic acid. It can also be used as an antistatic agent for synthetic fibers.
3. It can also be used as a protein denaturant.
Using dicyandiamide and ammonium salt (ammonium chloride) as raw materials, the melting reaction is carried out at 170-230 ℃ to obtain crude guanidine hydrochloride, which is refined to obtain the finished product.
Security Information:
Dangerous Goods Sign: Harmful
Safety sign: S22
Hazard identification: R22R36/38