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Home > Pharmaceutical Intermediates > Bulk Drug Intermediates > Silicon for Sale > High Quality TIANFU-CHEM Silicon CAS NO.7440-21-3
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High Quality TIANFU-CHEM Silicon CAS NO.7440-21-3

17 Inquiries

Unit Price: Get Latest Price
CAS No.:

7440-21-3

Grade:

Pharmaceutical Grade

Content:

99%

Port:

shanghai

Brand:

Lonwin

Packaging:

1kg/bag,25kg/drum,25kg/bag

Price valid (until):

2024-01-27

Company Type:
Trader
Location:
China
Qualification:
Main Products:

CHEMICALS,REAGENTS

  • Product Description

  • Seller Information

  • Inquiry History

  • Description

     Product Information                                                                                    

    Specification


    product name: silicon
    synonyms: simp ax05;simp ax10;simp ax20;silicon atomic absorption single element standard;silicon atomic absorption standard;silicon atomic absorption standard solution;silicon atomic spectroscopy standard;silicon icp/dcp standard
    cas: 7440-21-3
    mf: h4si
    mw: 32.12
    einecs: 231-130-8
    product categories: inorganics;siliconnanomaterials;14: si;nanomaterials;nanoparticles: metals and metal alloysmetal and ceramic science;nanopowders and nanoparticle dispersions;pure elementsmetal and ceramic science;electronic chemicals;electronic materials;materials science;micro/nanoelectronics;metal and ceramic science;metals;metal or element
    mol file: 7440-21-3.mol

    Shop High quality Morpholine CAS 110-91-8-Detailed Image 1Shop High quality Morpholine CAS 110-91-8-Detailed Image 2

     Quality and Service                                                                                        

    Shop High quality Morpholine CAS 110-91-8-Detailed Image 3


    1.Customer Satisfaction is our priority and guarantee for the future.


    2.We co-develop products and projects with our partners.


    3.Place of Origin China with Super quality by reasonable price.


    4.When you meet problems in mineral processing, we can provide technical guidance.


    5.We will ship the goods that you order from us by EMS, DHL, UPS, or FedEx.We will decided to choose which

    courier depend on Different countries.To find the best way to delivery the goods for you.


    6.We will ship the goods within 5days after get your payments.If you want to cancel or change order, please tell

    me within 24hours after you finish the payment...So we both can make the best of the bad bargain.

    Bulk Order: Shipped via sea or air, it's according to your requirement, delivery time is 7-15days after payment


    7.If you have any other questions to consult me.please not hesitate to contact me any times.


    All we want is win-win business. Send us your inquiries, you will get it!


    Our service:


    1. Certificate of analysis (COA)


    2. Material safety data sheet (MSDS)


    3. Route of synthesis (ROS)


    4. Method of aanlysis (MOA)


    5. Nuclear magnetic resonance (NMR)


    6. Packing pictures and loading video before loading


    7. Free sample


    9. Factory audit


    10. Strong after-sale service

     Our Advantage                                                                                               

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      1. 1. Rich experience.
        Our company is a professional production leading factory in China in pharmaceutical area of many years,

      our products have exported to Germany, Spain, UK, USA, Australia, Middle East, and so on other country,

      and we have got very good feedback from our customers, we had Established long friendly relations of

      cooperation.

       

      2. Great quality, purity and favourable.
      Good quality is one of our secret success, welcome order the samples, MOQ just 1 grams.

       

      3. Safe and fast delivery.
      We have stock, so we can delivery quickly at the very day when receive the payment.

      We have special way could ship 0.01kg to 3.5kg products a time. We offer melting powder into liquid

    1. service. And ship the liquid in special bottles.

       

      4. Good before after-sales service.



    2. Before-sales:
      - We would like to offer our most favorable quotation and detailed information about 

    3. product as well as our company.
      - We would like to offer free sample for 
      testing use.


      After-sales:
      - We would like to assist buyers in custom 
      clearing through providing necessary documents and information.
      - We would provide the best solution when 
      there is any dispute about product quality.

      ur Advantag

     Packaging & Shipping                                                                                  

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    Shanghai Lonwin Chemical Co., Ltd. is a company committing to contract synthesis and production

    of photoinitiators, fluorocarbon surfactants, indicators, intermediates and APIs.

    Our company has ISO and REACH international certification, in Jiangsu, Anhui and other places with

    decades of cooperation of OEM processing plants, to provide a more solid support for the customized

    production service of special chemicals.

     

    Now, our products are well sold in North America, Europe, Japan, South Korea and the Middle East,

    and customers are highly satisfied with our products and service!

     

    To achieve sustainable and steady development, we establish closely cooperative relationships with

    famous universities and institutions of China. We regularly exchange information with them and make

    cooperation on the R&D of new technologies.

     

    Sticking to the business philosophy of "quality first, credit first, service first, creativity first",we are

    doing our best to meet demands of customers all around the world. We sincerely welcome your visit

    and business, and look forward to cooperating with you for expanding international market together! 


    Shop High Pruity Peptide GHRP-2 Gym CAS NO.158861-67-7-Detailed Image 7

     F.A.Q                                                                                                               

    • Q1  Can i get some samples? 

      A1  Yes, we can supply the free sample, but the shipping cost be paid by our customers.

       

      Q2  How to start orders or make payments? 

      A2  Proforma invoice will be sent first after confirmation of order, enclosed our bank information.

    • Payment by T/T,or Paypal or Escrow(Alibaba).

       

      Q3  How to confirm the Product Quality before placing orders? 

      A3  You can get free samples for some products,you only need to pay the shipping cost or arrange a courier

    • to us and take the samples. You can send us your product specifications and requests,we will manufacture

    • the products according to your requests.

       

      Q4  What’s your MOQ? 

      A4  Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge

    • is 100% paid.

       

      Q5  How about delivery leadtime? 

      A5  Delivery lead time: About 3-5 days after payment confirmed. (Chinese holiday not included)

       

      Q6  Is there a discount? 

      A6  Different quantity has different discount.

       

      Q7  How do you treat quality complaint? 

      A7  First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem

    • caused by us, we will send you free goods for replacement or refund your loss.

       

      Q8  How to contact us ? 

      A8 You can choose your interested products and send inquiry to us.

    Basic Info
    Product Name:

    Silicon

    Other Name:

    Silicon;Silicon element;Sicomill Grade 2;KDB 20;Sicomill 4C-P;Silgrain Standard;SILSO;Polysilicon;HGH 600;Metasilicon 325A;Hexsil;CZ-N Polished wafer;SI 1059;GKO 3516A;KR 1;KDB 10;4FY;Silgrain HQ;Si(100) wafer;Biosilicon;Silgrain;Silicon 100;PHC 20;KDB 0.5;KDB 0.1;Aldrich 267414-25G;Sharp 80W;FEB 450D;JT 02;SIE 23PB;Sicomill E 4;PSi-C 2;ψ-C 2;SIE 20PB;KTC;KTC (element);Silicon 600;SI 500443;SI 500444;KEF 100;AgroSilicio;Sili-K;Si-S 10μm;6PW-A1;Silicon 200;SI 500452;a-Si 11;a-Si 12;a-Si 13;M-Si 600;Silgrain E-Si 400;T 2;T 2 (filler);SI 006031;WFP 6005;SAF 184;SI 100;KR-2;Wafer World 119;S 308;17375-03-0;71536-23-7;72516-01-9;72516-02-0;72516-03-1;90337-93-2;152284-21-4;157383-37-4;160371-18-6;1616351-53-1

    CAS No.:

    7440-21-3

    Molecular Formula:

    Si

    InChIKeys:

    InChIKey=XUIMIQQOPSSXEZ-UHFFFAOYSA-N

    Molecular Weight:

    28.09000

    Exact Mass:

    27.98000

    EC Number:

    231-130-8

    UNII:

    5J076063R1|Z4152N8IUI

    ICSC Number:

    1508

    UN Number:

    1346

    DSSTox ID:

    DTXSID0051441

    Color/Form:

    Black to gray, lustrous, needle-like crystals or octahedral platelets (cubic system); amorphous form is dark brown powder

    HScode:

    2804690000

    Characteristics
    PSA:

    0

    XLogP3:

    0.00000

    Appearance:

    Silicon powder, amorphous appears as a dark brown powder. Insoluble in water and denser than water. Burns readily when exposed to heat or flames, and may be difficult to extinguish. Water may not be effective in extinguishing flames. Used to make computer microchips.

    Density:

    2.33 g/cm3 @ Temp: 25 °C

    Melting Point:

    1410 °C

    Boiling Point:

    2355 °C

    Water Solubility:

    H2O: INsoluble

    Storage Conditions:

    Flammables area

    Vapor Pressure:

    0 mmHg (approx)

    Flammability characteristics:

    Combustible Solid in powder form.

    Experimental Properties:

    Atomic number: 14; valence: 4, 2; poor conductor of electricity ... lattice constant (25 °C): 5.41987X10-8 cm; compressibility (vol/vol 0) at 25x10+3 kg/sq cm: 0.978; at 100x10+3 kg/sq cm: 0.940; dielectric constant: 13; covalent bond ionization energy at 0 K = 1.2 electron volt; band gap: 1.106 electron volt; impurity atom ionization energy: approx 0.04 electron volt; intrinsic resistivity at 300 K = 0.23 megaohm; average heat capacity (16-100 °C): 0.1774 cal/g/deg C|Temperature of transition: solid = 1683 degree K; liquid = 2750 degree K; Heat of transition: solid = 11.1 kcal/g mole; liquid = 71 kcal/g mole|Mohs hardness: 7; dielectric constant: 12; coordination number: 6|For more Other Experimental Properties (Complete) data for Silicon, Elemental (11 total), please visit the HSDB record page.

    Air and Water Reactions:

    Highly flammable. Insoluble in water. A significant dust explosion hazard.

    Reactive Group:

    Metals, Elemental and Powder, Active

    Reactivity Alerts:

    Highly Flammable

    Reactivity Profile:

    SILICON POWDER, AMORPHOUS is a reducing agent. Ignites in fluorine gas at ordinary temperatures [Mellor 2:11-13 1946-47]. Burns spontaneously in gaseous chlorine. A mixture of silicon, aluminum, and lead oxide explodes when heated [Mellor 7:657 1946-47]. When heated with an alkali carbonate, a vigorous reaction attended by incandescence occurs [Mellor 6:164 1946-47]. Reacts violently with silver fluoride [Mellor 3:389 1946-47]. Reacts with sodium-potassium alloy to form sodium silicide, which is spontaneously flammable in air [Mellor 2 Supp. 2:564 1961].

    Heat of Combustion:

    -9.0550x10+8 J/kmol

    Flammable Limits:

    Combustible Solid in powder form.

    Physical Dangers:

    Dust explosion possible if in powder or granular form, mixed with air. If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc.

    Heat of Vaporization:

    16 kJ/g

    Critical Temperature & Pressure:

    Critical temperature: 4886 °C; critical pressure: 53.6 MPa

  • Seller Information
    Business Type:

    Trader

    Main Products:

    CHEMICALS,REAGENTS

    Location:

    No 966 Huaxu Road, Qingpu District, Shanghai, 201702, P.R. China

    Payment Terms:

    TT against copy of documents,L/C,TT against B/L draft before shipment,100% TT in advance

    Average lead Time:

    10

    Total Annual Revenue:

    $10 million-$25 million

    Total Employees:

    11-50

    Year of Establishment:

    2011

     Company Profile                                                                                                    

      Shanghai Lonwin Chemical Co., Ltd. is a company committing to contract synthesis and production of photoinitiators, fluorocarbon surfactants, indicators, intermediates and APIs.Our company has ISO and

    REACH international certification, in Jiangsu, Anhui and other places with decades of cooperation of

    OEM processing plants, to provide a more solid support for the customized production service of special

    chemicals.
       Now, our products are well sold in North America, Europe, Japan, South Korea and the Middle East,

    and customers are highly satisfied with our products and service!
    To achieve sustainable and steady development, we establish closely cooperative relationships with

    famous universities and institutions of China. We regularly exchange information with them and make

    cooperation on the R&D of new technologies.
    Sticking to the business philosophy of "quality first, credit first, service first, creativity first", we are

    doing our best to meet demands of customers all around the world. We sincerely welcome your visit

    and business, and look forward to cooperating with you for expanding international market together!


     

  • Inquiry History
    17 Inquiries
    Country Product Purchase Quantity Date Posted
    Saudi Arabia

    Silicone

    1 PCS Mar 9, 2026
    United Kingdom

    Silicone

    200 PCS Jan 21, 2026
    South Africa

    Silicone

    1 KG Jan 8, 2026
    Saudi Arabia

    Silicone

    1 KG Jan 4, 2026
    India

    Silicone

    1 KG Sep 3, 2025
    United States

    Silicone

    50  Jul 23, 2025
    India

    silicon powder

    25.00 MT Feb 13, 2025
    Pakistan

    silicon

    5 TON Jul 25, 2024
    Qatar

    Silicone

    1 KG Mar 18, 2026
    Indonesia

    Silicone

    100 G Feb 5, 2026
    Malta

    Silicone

    3020 PCS Dec 10, 2025
    India

    Silicone

    1 TON Nov 5, 2024
    India

    Metallurgical Grade Silicon (99% purity)

    1 MT Sep 13, 2024
    United States

    silicon

    5000000 KG Aug 1, 2024
    Germany

    Silicon anode material

    20 MT Nov 10, 2023
    Bangladesh

    silicone

    1 MT Sep 2, 2024
    Ghana

    Silicone

    250 KG Jan 3, 2024
    Post an enquiry for this product
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