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249508-40-5

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249508-40-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 249508-40-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,9,5,0 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 249508-40:
(8*2)+(7*4)+(6*9)+(5*5)+(4*0)+(3*8)+(2*4)+(1*0)=155
155 % 10 = 5
So 249508-40-5 is a valid CAS Registry Number.

249508-40-5SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name triethylene glycol benzyl methyl ether

1.2 Other means of identification

Product number -
Other names -

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:249508-40-5 SDS

249508-40-5Relevant articles and documents

Decomposition of vinyl ethers by alkalide K- K+ (15-crown-5)2 via organopotassium intermediates

Grobelny, Zbigniew,Stolarzewicz, Andrzej,Maercker, Adalbert,Krompiec, Stanis,Kasperczyk, Janusz,Rzepa, Józef

, p. 1580 - 1585 (2007/10/03)

The structure of vinyl ethers determines the direction of the C-O bond cleavage by alkalide K-, K+(15-crown-5)2 1. Highly reactive organopotassium compounds are intermediate products formed in the system containing phenyl vinyl ether, butyl vinyl ether, ethylene glycol butyl vinyl ether or triethylene glycol methyl vinyl ether. Vinylpotassium and butylpotassium react with 15-crown-5. The oxacyclic ring of the latter is opened in this case. Organopotassium ethers possessing CH2CH2O units eliminate ethylene. It results in various potassium alkoxides. The reaction of 1 with butyl vinyl ether occurs very slow as compared to other vinyl ethers and most of other reagents used till now.

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