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1,3-Hexadien-5-yne, (E)-, also known as (E)-1,3-Hexadien-5-yne, is an organic compound characterized by a unique structure that includes a triple bond at the th5 carbon and double bonds at the 1st and 3rd carbons. This molecule is a conjugated diene-yne, which means it has alternating double and triple bonds, giving it distinct chemical properties. It is a colorless liquid with a strong, pungent odor and is used in the synthesis of various organic compounds due to its reactive nature. The (E)- configuration indicates the geometric arrangement of the double bonds, with the highest priority groups on opposite sides of the double bond. 1,3-Hexadien-5-yne, (E)- is an important building block in organic chemistry, particularly in the preparation of pharmaceuticals and other specialty chemicals.

5222-77-5

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5222-77-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5222-77-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,2,2 and 2 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 5222-77:
(6*5)+(5*2)+(4*2)+(3*2)+(2*7)+(1*7)=75
75 % 10 = 5
So 5222-77-5 is a valid CAS Registry Number.

5222-77-5SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name trans-1,3-hexadien-5-yne

1.2 Other means of identification

Product number -
Other names (E)-1,3-hexadien-5-yne

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:5222-77-5 SDS

5222-77-5Upstream product

5222-77-5Relevant academic research and scientific papers

The Energy Well of Diradicals, V. - 1,3,5-Cyclohexatriene-1,4-diyl and 2,4-Cyclohexadiene-1,4-diyl

Roth, Wolfgang R.,Hopf, Henning,Horn, Carina

, p. 1765 - 1780 (2007/10/02)

The energy profile of the Bergman rearrangement of (Z)-3-hexene-1,5-diyne (4) has been established from the NO and oxygen dependance of the trapping rate of the intermediate diradical 1 which leads to a heat of formation for 1,4-didehydrobenzene (1) of ΔH0f = 138.0 +/- 1.0 kcal * mol-1.By the same technique the heat of formation of 1,2,4-cyclohexatriene (2), generated by thermolysis of (Z)-1,3-hexadien-5-yne (10), gives ΔH0f = 105.1 +/- 1.0 kcal * mol-1 which indicates a high diradical character for 2. - Key Words: Diradicals / NO and O2 trapping / Heat of formation / Energy well / Rearrangements / Bergman cyclisation

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