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166984-72-1

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166984-72-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 166984-72-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,9,8 and 4 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 166984-72:
(8*1)+(7*6)+(6*6)+(5*9)+(4*8)+(3*4)+(2*7)+(1*2)=191
191 % 10 = 1
So 166984-72-1 is a valid CAS Registry Number.

166984-72-1SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name bromobenzene cation

1.2 Other means of identification

Product number -
Other names 4-bromo-phenylium

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:166984-72-1 SDS

166984-72-1Upstream product

166984-72-1Downstream Products

166984-72-1Relevant articles and documents

Dediazoniations of Arenediazonium Ions. Part 25. Influence of Substituents on the Exchange of the Diazonio Group for External Molecular Nitrogen and on the N(α),N(β)-Rearrangement in the Diazonio Group.

Ravenscroft, Michael D.,Zollinger, Heinrich

, p. 507 - 514 (2007/10/02)

The N(α), N(β)-rearrangement of the two N-atoms which can be observed in solutions of -labelled p-substituted benzenediazonium ions follows dual substituent parameter treatments.The reaction yields a negative field and positive resonance reaction constant (ρF = -3.35, ρR = 2.47).The magnitude of these constants is, within experimental error, the same as the respective reaction constants for solvolytic dediazonation.The exchange of the diazonio group of 15N-labelled p-substituted benzenediazonium ion yields, however, field and resonance reaction constants for the forward and reverse steps in the complex mechanism of the exchange reaction.

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