Dimethyl Carbonate (DMC) for Replace Dimethyl Sulfate as a Methylating Agent 616-38-6

• CAS No.: 616-38-6
• Formula: C3h6o3
• EINECS: 210-478-4
• Type: Pharmaceutical Intermediates
• Appearance: Liquid
• Quality: Industrial
• Model NO.: 99.5%
• Colour: White
• Melting Point: 0.5 ºC
• Boiling Point: 90 to 91 ° C
• Density: 1.07 G/Cm³
• Flash Point: 17ºC(Oc)
• Transport Package: 200kg/ Barrel
• Specification: 200kg/ barrel
• Trademark: baoqu
• Origin: China
• HS Code: 2920900090
• Production Capacity: 50, 000 Tons/Year

Product Description

Product Description

Test Description		Unit of Measure	Specifications		Test Result
Appearance		-	Colorless & transparent liquid		Qualified
Content		weight %	Min99.5		99.91
Methanol		weight %	Max0.1		0.006
Moisture		weight %	Max0.1		0.02
Acidity (CH3COOH)		weight %	Max0.02		0.01
Density @20ºC		g/cm3	1.066-1.076		1.071
Color, Pt-Co		APHA Color	Max10		5

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FAQ

1, Q: Can you supply samples for testing?
A: Yes, Our samples are free for your testing,
However, you need to afford the delivery fee (DHL/TNT/EMS)
The delivery fee will be deducted from the future bulk order.
2, Q: What documents you provide for every shipment?
A: Usually, Commercial invoice, Packing list, Bill of lading, COA, Certificate of origin,
MSDS are promised. Other documents you need for import,
please feel free to contact us.
3,Q: How can i get the price for this product?
A: Please give us the exact quantity,packing,destination port and
other necessary information,we will give you quotation according
to your specific requirments.
4,Q: How about delivery lead time?
A: Delivery lead time: About 7-10 days after payment confirmed.(Chinese holiday not included).
5,Q:How to start orders or make payments?
A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T,Western Union or Paypal or secure payment. 

Company Members

 

Although phosgene has high reactivity, its highly toxic and highly corrosive by-products make it face great environmental pressure, so it will be gradually eliminated. DMC has a similar nucleophilic reaction center. When the carbonyl group of DMC is attacked by nucleophilic attack, the acyl-oxygen bond is broken to form a carbonyl compound, and the by-product is methanol. Therefore, DMC can replace phosgene as a safe reaction reagent to synthesize carbonic acid derivatives, such as carbamate pesticides, polycarbonate, isocyanate, etc. Among them, polycarbonate will be the largest area of DMC demand, and it is predicted that more than 80% of DMC will be used to produce polycarbonate in 2005.
Instead of dimethyl sulfate as methylating agent
Due to similar reasons with phosgene, dimethyl sulfate is also facing the pressure of elimination, and when the methyl carbon of DMC is attacked by nucleophile, its alkyl-oxygen bond is broken, and the methylation product is also generated, and the reaction rate is higher and the process is simpler than that of dimethyl sulfate. The main applications include synthetic organic intermediates, pharmaceutical products, pesticide products and so on.
Low toxic solvent
DMC has excellent solubility, its melting and boiling point range is narrow, the surface tension is large, the viscosity is low, the dielectric constant is small, and has a high evaporation temperature and faster evaporation speed, so it can be used as a low toxic solvent for the coating industry and pharmaceutical industry. It can be seen that DMC is not only less toxic, but also has the characteristics of high flash point, low steam pressure and high lower explosive limit in the air, so it is a green solvent that integrates cleanliness and safety.