R: ORGLIST: How to reduce free formaldehyde content

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From: Akema Laboratory (akemalab$##$libero.it)
Date: Tue May 31 2005 - 03:06:32 EDT


An useful option for many synthesis is to add a little molar excess of
primary or secondary amines (e.g. urea or hydantoins) in water solution, the
free formaldehyde will react with N to form N-hydroxymethilic derivatives.

Regards

Massimo



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Sent: Monday, May 30, 2005 6:02 PM
Subject: Everybody Digest, Vol 8, Issue 18


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> 1. How to reduce free formaldehyde content (Firman Muttaqin)
> 2. 2,3-dimethylindol-5-carboxylic acid methyl ester
> (Mathews Jose K.)
> 3. QAC + cationics (finechem)
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> Message: 1
> Date: Sat, 28 May 2005 21:58:43 -0700 (PDT)
> From: Firman Muttaqin <firmanq$##$yahoo.com>
> Subject: ORGLIST: How to reduce free formaldehyde content
> To: everybody$##$orglist.net
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>
> i made a latex binder using paraformaldehyde as raw material, i have
difficulties to reduce free formaldehyde content, do anyone know what kind
of material/compund and reaction can be used for?
>
> thank you
>
> Firman
>
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> From: "Mathews Jose K." <mathews_jose_k$##$yahoo.co.in>
> Subject: ORGLIST: 2,3-dimethylindol-5-carboxylic acid methyl ester
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> I want to synthesis 2,3-dimethylindole-5-carboxylic acid methyl ester
which is an intermediate for solvent orange 47.
>
>
>
> Anybody to help me pls????
>
>
>
>
>
> pls sent me ur valuable suggestions
>
>
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> Thx in advance
>
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> Mathews
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> Message: 3
> Date: Mon, 30 May 2005 07:23:08 -0700 (PDT)
> From: finechem <chemicals555$##$yahoo.com>
> Subject: ORGLIST: QAC + cationics
> To: everybody$##$orglist.net
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> Dear all,
>
> I would like to know the structure,binding and
> synthesis of poly Quaternary Ammonium Compound
> polymers
>
> - Are they monomers of QAC bound to a cationic polymer
> ?
>
> - What is the type of bonding ?
>
> - How would one go about synthesising this ?
>
> Thanks in advance,
>
> Regards,
>
> jmarjorie
>
>
>
>
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