Welcome to LookChem.com Sign In|Join Free

CAS

  • or

20810-21-3

Post Buying Request

20810-21-3 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

20810-21-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20810-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,1 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20810-21:
(7*2)+(6*0)+(5*8)+(4*1)+(3*0)+(2*2)+(1*1)=63
63 % 10 = 3
So 20810-21-3 is a valid CAS Registry Number.

20810-21-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 13, 2017

Revision Date: Aug 13, 2017

1.Identification

1.1 GHS Product identifier

Product name 4-undecene

1.2 Other means of identification

Product number -
Other names undec-4-ene

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:20810-21-3 SDS

20810-21-3Downstream Products

20810-21-3Relevant articles and documents

The Iodine Atom Transfer Addition Reaction (I-ATRA) initiated by AIBN: Optimization, scope and radical reaction pathways

Balczewski, Piotr,Szadowiak, Aldona,Bialas, Tomasz

, p. 22 - 35 (2006)

Optimization of reaction conditions (alkene, halide, solvent, stoichiometry, manners of the reagents addition, and reaction time) of the I-ATRA reactions involving 1-iodoalkylphosphonates was carried out. GC-MS-CI/EI analyses showed main and side products of this reaction and the corresponding radical reaction pathways leading to products derived from phosphorus and nonphosphorus containing iodides, as well as explained the source of hydrogen in radical reduction processes accompanying the I-ATRA reaction. Synthesis of some 3-iodoalkyl and 3-iodoalkenylphosphonates was also presented based on the optimized procedure.

The metathesis of α-olefins over supported Re-catalysts in supercritical CO2

Selva, Maurizio,Perosa, Alvise,Fabris, Massimo,Canton, Patrizia

experimental part, p. 229 - 238 (2010/04/22)

At 35 °C, in the presence of supercritical carbon dioxide (80-150 bar) as a solvent, α-olefins (RCHCH2, R = C4-C6) undergo highly selective self-metathesis catalyzed by supported Re-oxide (7%). To the best of our knowledge, this is the first procedure for the metathesis of alkenes, in which heterogeneous catalysts are combined with the use of dense CO2. The intrinsic eco-compatibility and the unique physicochemical properties of this medium offer both environmental and synthetic advantages: not only conventional toxic solvents (e.g. n-heptane and toluene) can be replaced, but the reaction is faster. For instance, after 2 h, the average conversion of 1-octene is 67% and 40% in scCO2 and n-heptane, respectively. The product of self-methatesis, 7-tetradecene, can be isolated in yields up to 68%. At 90 bar, the reaction is rather sensitive to the mole fraction of the olefin (in scCO2); though, the enhancement of the pressure (and the density) of the supercritical medium does not induce significant effects on either the rate or the selectivity of the process. The nature of the catalytic support also greatly affects the reaction outcome: Re-oxide shows good activity if dispersed over γ-Al2O3, while silica-based systems are ineffective.

AIR-STABLE BINUCLEAR ALKOXYTUNGSTEN COMPLEXES AS CATALYST PRECURSORS FOR OLEFIN METATHESIS

Savard, Jacques,Alper, Howard

, p. 2483 - 2486 (2007/10/02)

The use of the air-stable complexes tetrachlorobis(μ-methoxy)bis(methanolo)dimethoxyditungsten (1) and tetrachlorobis(μ-ethoxy)tetraethoxyditungsten (2) as catalyst precursors for the metathesis of 1-octene is described.Using mild conditions, the latter was converted to 7-tetradecene (4) in fair yields when diethylaluminum chloride (3) was used as a cocatalyst.Product stereoselectivity was 4/1 in favor of the trans isomer.The reaction was also shown to be efficient for the production of 2-nonenes.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 20810-21-3