Examples of 'is halogen' in a sentence
Meaning of "is halogen"
is halogen: Refers to a group of chemical elements such as fluorine, chlorine, bromine, and iodine
How to use "is halogen" in a sentence
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is halogen
Is halogen and salts and solvates thereof.
The isolated product is halogen ions free.
Fluorine is halogen elements which are highly reactive.
Particularly preferred is halogen or lower alkyl.
Hal is halogen and pharmaceutically acceptable salts thereof.
Preferably the group is halogen.
X is halogen or a leaving group.
A preferred anionic counterion is halogen.
This mixture is halogen stable under cooling water application conditions.
A preferred leaving group is halogen.
The buffer material is halogen free and can be made flame retardant.
A more preferred compound of this embodiment is where the one substituent is halogen.
Hal is halogen.
Among the numerous possible substituents for the alkoxy group listed is halogen.
Preferable is halogen.
See also
When X is halogen it is most preferably bromo or chloro.
In a preferred embodiment Y is halogen.
When W is halogen it is preferably chloro or more preferably bromo.
In one embodiment Y is halogen or sulfonate group.
In other embodiments, the composition is halogen free.
Wherein X is halogen or a reactive group exemplified by a lower alkanesulfonyloxy group.
Prefereably Rb is halogen.
Wherein X is halogen or a reactive group exemplified by a lower alkancsulfonyloxy group.
The co-catalyst is preferably an organoaluminum compound that is halogen free.
Preferred X is halogen atom and preferred Y is halogen atom or hydrogen atom.
The process of claim 1 wherein said catalyst is halogen stabilized silicalite.
R4 is halogen and the halogen is in the alpha configuration.
The Ziegler-Natta to-catalyst is preferably an organoaluminum compound that is halogen free.
This is Halogen.
Is halogen or methoxy ; or a pharmaceutically acceptable addition salt thereof.
In a preferred embodiment, the low density, fire resistive intumescent coating is halogen free.
A compound of Formula V wherein X is halogen is prepared using conventional methodology from known starting materials.
In a specific embodiment, the leaving group LG is halogen.
It is halogen free product and green product, no effect to the human bodies.
Preferably, according to the present invention, Y is halogen or a sulfonate group.
When the substituent is halogen atom, substitution may be performed within the maximum substitutable range.
Alternatively, a suitable hydrogen halide scavenger may be employed when X ² is halogen.
X is halogen such as Cl or Br, or an alkyl group such as methyl.
In still a further embodiment, one Ra is halogen and each remaining Ra is hydrogen.
A catalyst component according to any one of the preceding claims, wherein Q is halogen.
In a preferred embodiment of the invention R is halogen or cyano, most preferred cyano.
When R ⁸ is halogen this is preferably chlorine or fluorine.
Group Y ¹ is also preferably chlorine when it is halogen.
More preferred is R1 is halogen or fluorine substituted methyl.
Y is alkylene or substituted alkylene ; and X is halogen.
Preferably, L is halogen or a nitro group.
In another aspect are compounds where R1 is halogen.
Procedure according to Claim 1, characterised in that X is halogen or an alkylsulphonyloxy or arylsulphonyloxy group.
R is hydrocarbyl or substituted hydrocarbyl ; and X is halogen.
The compounds where X is halogen may be synthesized using 1d as illustrated by Scheme 6.
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Examples of using Halogen
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W quartz halogen lamp if used without a filter
Replacing flash tubes and halogen lamps
W quartz halogen lamp if a green filter is used
