Pharmaceutical intermediates are actually some chemical raw materials or products used in the synthesis process. Chemical products do not need that kind of production license. They can be produced in ordinary chemical plants. As long as they reach some grades, they can be synthesized appropriately.
Types of intermediates
Intermediates refer to semi-finished products, which are intermediate products in the production of certain products. For example, to produce a product, it can be produced from intermediates to save costs.
Intermediates are formed from cyclic compounds such as benzene, naphthalene, anthracene, etc. through sulfonation, alkali fusion, nitration, reduction, etc. For example, benzene is nitrated to nitrobenzene, and then reduced to aniline, which can be chemically processed into dyes, drugs, vulcanization accelerators, etc. Both nitrobenzene and aniline are intermediates.
There are also acyclic compounds such as methane, acetylene, propylene, butane, butene, etc. through dehydrogenation, polymerization, halogenation, hydrolysis and other reactions. For example, butane or butene is dehydrogenated to butadiene, which can be chemically processed into synthetic rubber, synthetic fibers, and the like.
Butadiene is an intermediate.
It originally refers to the intermediate products produced in the process of synthesizing chemical products such as spices, dyes, resins, drugs, plasticizers, rubber accelerators, etc. using coal tar or petroleum products as raw materials. It now generally refers to various intermediate products obtained in the process of organic synthesis.
5-Bromo-2 4-dichloropyrimidine,4-Bromo-2-fluorobenzoic acid,4-Bromo-2-fluorobenzaldehyde,6-(4-Aminophenyl)-4 5-dihydro-5-methyl-3(2H)-pyridazinone Fuxin Custchem Fine Chemical Co., Ltd. , https://www.custchemvip.com
 Inner packing: 1) 2.5mm X 300mm, 1-5kg/ plastic bag+ inner box
                      2) 3.2mm X 350mm, 1-5kg/ plastic bag+ inner boxÂ
                       3) 4.0mm X 350mm, 1-5kg/ plastic bag+ inner box
Delivery Detail: Within 25 days after your confirmation
Certificates: CE; ISO
Our Services
Samples can be provided for free.
OEM is acceptable.
Package
Company Information
Lin'an Dayang Welding Material Co., Ltd., located in the western part of Hangzhou, was established at the beginning of this century. We possess a production line of oil pressure unit, which can produce 5000 ton stainless steel welding electrodes. Our company owns rich technical resources to design, research and mainly produce special type of electrodes with complete models.Â
The electrodes are mainly exported and the amount is up to 2000 tons per year on average. Our customers are mainly from Germany, Indonesia, Singapore, Philippines, Vietnam, Thailand, Bengal, and Egypt. They think highly of our products all the time.Â
In the days of 21st century, we will be stricter with ourselves and have continuous technical innovation which will spur us on to higher quality products for our users. Customers at home and abroad are sincerely invited to visit, call and hold talks on internet.
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Stainless Steel Electrode
                   Item NO.
        GB/TB
    AWS
WEA212
E318-16
E318-16
Description:
Low carbon stainless containing niobium stabilizer steel with coating of titanium calcium electrode. Weld metal with resistance to intergranular corrosion satifying.Both AC/DC connection appliable with a good operating performance.Application:
WEA212 Stainless Steel Electrode suit for welding of important Cr18Ni12Mo2, Cr17Ni14Mo2 of ultra-low carbon and stainless steel. Such as urea synthetic tower.Equipments contact with strong corrosive medium components of vinylon.Chemical composition of Deposited metal(%):
             C
Mn
Si
Cr
Ni
Mo
Cu
S
P
   ≤0.08
0.5-2.5
≤0.90
17.0-20.0
11.0-14.0
2.0-3.0
≤0.7
≤0.030
≤0.040
Mechanical Performance of deposited Metal:
                          Rm(Mpa)
       A(%)
≥550
≥25
Reference Current:(DC or AC)
Diameter (mm)
Φ2.5
Φ3.2
Φ4.0
Φ5.0
Current (A)
50-80
80-110
110-160
160-200
Notes:
(I)Please bake WEA212 Stainless Steel welding electrode for 1 hour at 150°C before welding.Â
(II)We suggest you to do the welding by DC and control the current to avoid redenning problem of rodes. By AC, the depth will not be
Model NO.: AWS E318-16
Function: Surfacing Electrode, Low Hydrogen Type Electrode, Hardfacing Electrode, High Efficient Iron Powder Electrode, Gravity Electrode, Moisture-Proof Electrode
Welding Power: AC/DC
Application: Stainless Steel Structures
Delivery: Within 8-20 Days After Your Confirmation
Color: Grey-White
Operating Temperature: International Standard
Certificates: Ce ISO
Trademark: Ocean Welding
Transport Package: 5kg Per Color Box, 20kg/Carton
Origin: Zhejiang, China (Mainland)
HS Code: 8311200000
Product Description
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Packaging & DeliveryÂ
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