China (Mainland)
Premiumsupplier 
D-(-)-Asparagine monohydrate CAS NO.2058-58-4
- FOB Price: USD: 130.00-150.00 /Kilogram Get Latest Price
- Min.Order: 1 Kilogram
- Payment Terms: L/C,D/A,D/P,T/T,
- Available Specifications:
98%(1-30)Kilogram98%(20-40)Kilogram
- Product Details
Keywords
- D-(-)-Asparagine monohydrate
- 2058-58-4
- Nalpha-Acetyl-D-asparagine
Quick Details
- ProName: D-(-)-Asparagine monohydrate
- CasNo: 2058-58-4
- Molecular Formula: C4H8N2O3
- Appearance: white powder
- Application: amino acid
- DeliveryTime: Shipped in 15 days after payment
- PackAge: according to customers' requirements
- Port: China main port
- ProductionCapacity: 10000 Metric Ton/Month
- Purity: 98%
- Storage: 2-8°C
- Transportation: Air, sea, land transport
- LimitNum: 1 Kilogram
- Related Substances: 0
- Residue on Ignition: 0.10% max
- Heavy Metal: 8ppm
- Valid Period: 2 years
Superiority
Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At present, our customers have spread all over the world, we have rich Transportation experience, we aim to serve customers, to help customers, solve problems for customers. Look forward to working with you!
Details
Introduction:
English name chlorauride, gold trichloride, gold chloride hydrate, etc.
Chemical formula AuCl3 actual dimer Au2Cl6
Molecular weight 303.33
CAS registration number 13453-07-1
EINECS accession number 236-623-1
Melting point 254 ° C
Water soluble, soluble in water and ethanol
Density 3.9g/cm3
Appearance Golden yellow to reddish yellow monoclinic crystal.
Application of gold plating, special inks, drugs, porcelain gold and red glass, etc. Hazard Description Irritant, corrosive
Type of control This product is not regulated
Molar mass 303.325 (anhydrous) g·mol−1
MDL number MFCD00014172
Crystal structure monoclinic system
Other soluble ether, slightly soluble chloroform, insoluble carbon disulfide
Function:
The gold (III) salt, especially (prepared by reaction with NaCl), can replace the toxic mercury (II) salt as a catalyst for the reaction of an alkyne. For example, the methyl ketone is prepared by hydration of a terminal alkyne.
Under these conditions, the yield of ketones can reach 90%. Still another use is as a catalyst in the amination of alkynes. In recent years, it has begun to attract the favor of organic chemists because it can be used as a weakly acidic catalyst for other chemical reactions, such as: alkylation of aromatic hydrocarbons, and conversion of furan to phenol (see below). This chemical reaction is also used in the synthesis of organic matter and in the pharmaceutical industry. For example, 2-methylfuran (salkane) can be smoothly alkylated with methyl vinyl ketone at the 5th position.
At room temperature, only 1 mole% of the methyl nitrile can be reacted for 40 minutes to produce 91% of the product. This amount is worth noting because furan and ketone are generally susceptible to side reactions such as polymerization in an acidic environment. Sometimes, when an alkyne is present, phenol is formed.
In this reaction, the carbon atoms undergo a series of complex rearrangements that produce new aromatic rings.
Specification：
All Key Manufacturers and Suppliers of Baoji Guokang have routine inspections to ensure they are in compliance with the standards set in place during the original Supplier Assessment Inspection.
Production Inspection Process:
Our Group service includes regular and thorough inspections throughout the manufacturing process, eliminating the need to employ additional quality control inspectors.
- Raw material before any production begins
- Pre-production samples to ensure specifications are being met
- In-process to confirm that standards are maintained
- Pre-shipping to ensure that the product arrives to the customer exactly as expected and is packaged
correctly to prevent any damage in transit.
We can help operating split shipments, meeting the factory minimum quantity but ship them in 2 or 3 shipments with required gaps among. This allows you to move stock through your business without taking up space and capital.
We will arrange the subsequent shipments from our factory to your warehouse.
We can consolidate your small orders from multiple factories, delivering all at the same time to you or your customers,using the most cost-effective route available. At the time of order placement, we will offer details to you about the volume of each component part and what size container will be used.
We can offer the complete package from concept to delivery; arranging everything up until products arrive at your own door or distribution hub.
Delivery can be offered.
- Utilizing your own freight-forwarder
- FOB to a port in China
- CIF to a port near you
Whether you have your own freight-forwarder or you would like to organize shipment; whether you require delivery FOB in China or CIF to a port near you, we are glad to quote and supply whichever way you choose. Please feel free to discuss all options with us.
1.Client is first.We are trying to bring maximum profit to our clients and we only share small.
2.Credibility is the most important.
3.Quality control is our life.
4.Great sense of responsibility.
We will be responsible for not only our products, our clients, our suppliers, also the society.
