Introduction:
Guanidine hydrochloride, chemical name amidoformamidine hydrochloride, is white or yellowish clumps, almost insoluble in acetone, benzene and ether. It can be used as medicine, pesticides, dyes and other organic synthesis intermediates, and is an important raw material for the manufacture of sulfadiazine, sulfadimethazine, sulfadimethazine and other drugs and folic acid, and can also be used as an antistatic agent for synthetic fibers.
Preparation method:
Guanidine hydrochloride preparation method, with the following process:
a, melting, the weight ratio of 1∶1.27 dicyandiamide and ammonium chloride into the reactor, melting reaction at 170 ~ 230℃, guanidine hydrochloride crude product;
b, dissolve, at room temperature, dissolve guanidine hydrochloride in water at a ratio of 1 to 1, and add ammonium salt alkali to the solution according to the content of ammonium salt in guanidine hydrochloride;
c, filtration, the raw materials and reaction by-products are removed by filtration method;
d, dehydration, the filtered mother liquor at high temperature dehydration;
e, crystallization, supersaturated solution cooling, concentrated crystallization, to obtain high-purity guanidine hydrochloride.
f, the guanidine hydrochloride after step e is added into the dicyandiamide into the reactor, the melting reaction is carried out at 170 ~ 230℃ for 3 ~ 4h, and then through steps b, c, d, e, to obtain higher purity guanidine hydrochloride, and this step can be repeated several times according to needs.
g. The guanidine hydrochloride after step e is then passed through steps b, c, d and e, where the ratio of step b to water is 1.5∶1 to obtain higher purity guanidine hydrochloride, and this step can be repeated several times as needed.
| Melting Point | 180-185 °C |
| Density | 1.18 g/mL at 25 °C |
| Refractive Index | n20/D 1.465 |
| Storage Condition | room temp |
| PH | 4.5-5.5 (100g/l, H2O, 20℃) |
| Odor | Odorless |
| Water Solubility | 2280 g/L (20 ºC) |
Sensibility
| Hygroscopic |
Our advantages:
1) Timely communication, reply within 12 hours.You can leave any messages on our whatsapp or send email to us.
2)Selecting raw materials strictly,our products are the highest purity.
3)Reasonable and competitive price.
4) Free sample for your evaluation.Customers only need to undertake the shipping fee for delivery the samples to your destionation.
5)OEM/ODM Available.Trial order is available for testing after samples.
6) Packaging can be customized according to each buyers' special request.
We guarantee that your package will pass 100% through the Mexico US, UK, Australia, Netherlands, Canada, France, Germany, Spain, Belgium, Sweden, Poland, Russian, Ukraine, Kazakhstan, Czech Republic, Slovakia, Portugal.
We have freight forwarders in these countries, and our customs clearance company will clear your parcels without any customs issues, sometimes even 1000 kg. Door to door service. Make sure you receive 100% of the goods. Let you have a good experience of our strong freight capacity.
Company Introduction
hebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and development production of reagent tens of thousands of species. our aim is quality strives for the survival. Seek development by credit reputation. Our products have big price advantage in Europe South America and so on .and Our company also has the advantage of high quality in Africa. in the past two years our products has reached more than 30 countries in the world, Europe. South America. North America, southeast Asia, Africa, etc. We welcome all over the world with the best quality and lowest price friend common cooperation and common development!
After Sales Service
1) Best quality in your requirement
2)Competitive price in china market
3)Mature technical support
4)Professional logistic support
5 )Full experience of large numberscontainers loading in chinese sea port
6 )Fast shipment by reputed shipping line
7) Packing with pallet as buyer's special request
8) Best service after shipment.
9) Cargoes together with container after-sales service available
10) Full experience in export
11)Raw materials from chinese origin
FAQ
What is the way you ship?
Express: FedEx, UPS, EMS, DHL, USPS, TNT, DPD, Aramex etc
Our way of shipping the products is universal and secure.
The company name and other contents related to pharmacy are not written on the package slips.
The way of packing is regularly changed for a secure delivery.
The packages are small in order to avoid unwelcomed questions . If the order is big, then it will be divided into two or more packages
Can the packages be trackable?
YES, we provide tracking number and you can track on internet.
Where do you ship to?
Worldwide.
Do you offer domestic shipping/remail shipping?
Yes we can ship to USA/UK/Canada/Australia/Germany etc warehouse first then to you.
Do you ensure your packing , what about customs, what happens if the package is retained?
We concern a lot about our safety system, we pack the orders as secure as possible. If a package is seized at customs, reships of seized orders will be done provided you have a copy of the letter to show us. If you receive a seizure letter, please contact us immediately with a scanned copy of the seizure letter, and also a new address to have your order reshipped to.
Which payment options are available?
Bitcoin
Western Union
Bank wire
MoneyGram
China
