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Ingredients in dishwashing liquid?

Ingredients in dishwashing liquid? - Chemistry Forum

Ingredients in dishwashing liquid? - Chemistry Forum. Discuss chemical reactions, chemistry.


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  #1  
Old 12-17-2003, 11:43 PM
Vance Roos
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Default Ingredients in dishwashing liquid?



What are the ingredients of dishwashing liquid (like Fairy)?

It seems that the menufacturers don't like to list the ingredients
but I hope the ingredients can't be that hard to work out.

I suspect that the main ingredient is an anionic surfactant. But
what else woudl there be in there?
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  #2  
Old 12-18-2003, 12:06 AM
Vance Roos
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Default Ingredients in dishwashing liquid?

[Only registered users see links. ]z (Bruce Sinclair)
wrote:



Thanks for the info. Exactly what sort of detergent is Teepol? Is
it an anionic surfactant?
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  #3  
Old 12-18-2003, 12:35 AM
Keith Michaels
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Default Ingredients in dishwashing liquid?

In article <oV5Eb.13472$[Only registered users see links. ].net>,
[Only registered users see links. ]z (Bruce Sinclair) writes:
|> In article <9454F168DCE41471AE@130.133.1.4>, Vance Roos <not__me@mail.com> wrote:
|> >What are the ingredients of dishwashing liquid (like Fairy)?
|> >
|> >It seems that the menufacturers don't like to list the ingredients
|> >but I hope the ingredients can't be that hard to work out.
|> >
|> >I suspect that the main ingredient is an anionic surfactant. But
|> >what else woudl there be in there?
|>
|> Years ago it was teepol ... available from petrol comapnies in 44
|> gallon drums
|> Add colour, smell ... voila !
|>
|> It might be different now ... but why ?
|>
|> Bruce

Sodium Laurel Sulfate of course, or maybe Sodium Alkylbenzenesufonate
if it's an older formulation. There's dozens now, nonionics like
Polyoxyethylene for low-foam/low-temp uses, Sodium para-dodecylbenzene
sulfonate for biodegradability. SLS seems like the most common in
shampoo and probably dishwashing liquid too.
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  #4  
Old 12-18-2003, 12:46 AM
Bruce Sinclair
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Default Ingredients in dishwashing liquid?

In article <9454F168DCE41471AE@130.133.1.4>, Vance Roos <not__me@mail.com> wrote:

Years ago it was teepol ... available from petrol comapnies in 44
gallon drums
Add colour, smell ... voila !

It might be different now ... but why ?

Bruce


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think that They were Us. If it was Them, then nothing was anyone´s fault.
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I´ve certainly never thought of myself as one of Them. No-one ever thinks
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the bad things. <=> Terry Pratchett. Jingo.
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  #5  
Old 12-18-2003, 03:33 AM
Barry Hunt
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Default Ingredients in dishwashing liquid?


"Keith Michaels" <[Only registered users see links. ].boeing.com> wrote in message
news:[Only registered users see links. ]...
<[Only registered users see links. ]> wrote:


DDBSA (or LABS acid - Linear Alkylbenzene sulfonic acid) is still the
workhorse, especially in the cheaper brands. Sodium laureth (not laurel)
sulfate is often used, especially in the more expensive brands. Nonionics -
polyoxyethylene derivatives (not polyoxyethylene itself) are used for
solubility and foam building; usually fatty alcohol ethoxylates.
Alkanolamides for viscosity and foam building. SLS is sodium lauryl sulfate
and isn't normally used - nor is it used too much in shampoos, it's mainly
SLES (sodium laureth sulfate).

Unlike with cosmetics, manufacturers don't have to tell you what's in it -
so they usually don't.

HTH

Barry Hunt


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  #6  
Old 12-18-2003, 05:00 AM
Keith Michaels
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Default Ingredients in dishwashing liquid?

In article <brr72h$292g$[Only registered users see links. ].au>,
"Barry Hunt" <[Only registered users see links. ].au> writes:
|>
|> "Keith Michaels" <[Only registered users see links. ].boeing.com> wrote in message
|> news:[Only registered users see links. ]...
|> > In article <oV5Eb.13472$[Only registered users see links. ].net>,
|> > [Only registered users see links. ]z (Bruce Sinclair) writes:
|> > |> In article <9454F168DCE41471AE@130.133.1.4>, Vance Roos
|> <not__me@mail.com> wrote:
|> > |> >What are the ingredients of dishwashing liquid (like Fairy)?
|> > |> >
|> > |> >It seems that the menufacturers don't like to list the ingredients
|> > |> >but I hope the ingredients can't be that hard to work out.
|> > |> >
|> > |> >I suspect that the main ingredient is an anionic surfactant. But
|> > |> >what else woudl there be in there?
|> > |>
|> > |> Years ago it was teepol ... available from petrol comapnies in 44
|> > |> gallon drums
|> > |> Add colour, smell ... voila !
|> > |>
|> > |> It might be different now ... but why ?
|> > |>
|> > |> Bruce
|> >
|> > Sodium Laurel Sulfate of course, or maybe Sodium Alkylbenzenesufonate
|> > if it's an older formulation. There's dozens now, nonionics like
|> > Polyoxyethylene for low-foam/low-temp uses, Sodium para-dodecylbenzene
|> > sulfonate for biodegradability. SLS seems like the most common in
|> > shampoo and probably dishwashing liquid too.
|>
|>
|> DDBSA (or LABS acid - Linear Alkylbenzene sulfonic acid) is still the
|> workhorse, especially in the cheaper brands. Sodium laureth (not laurel)
|> sulfate is often used, especially in the more expensive brands. Nonionics -
|> polyoxyethylene derivatives (not polyoxyethylene itself) are used for
|> solubility and foam building; usually fatty alcohol ethoxylates.
|> Alkanolamides for viscosity and foam building. SLS is sodium lauryl sulfate
|> and isn't normally used - nor is it used too much in shampoos, it's mainly
|> SLES (sodium laureth sulfate).
|>
|> Unlike with cosmetics, manufacturers don't have to tell you what's in it -
|> so they usually don't.
|>
|> HTH
|>
|> Barry Hunt

Thanks for the correction. My reference said polyoxyethylene is for low
foam/temp but it's only a coffee table book anyway (Molecules, P.W.
Atkins). I rechecked my shampoo bottle and it actually says ammonium
laurel sulfate which I misread as SLS.
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  #7  
Old 12-18-2003, 07:41 AM
Vance Roos
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Default Ingredients in dishwashing liquid?

"Barry Hunt" <[Only registered users see links. ].au> wrote:



Very helpful answer, Barry. LABS acid is a new one for me.

I know SLES as a chemical which, in the right concentration, is
alright when in contact with the skin.

Is LABS acid harsher than SLES? What other disadvantages (or
advantages) does LABS acid have compared to SLES?

BTW sOmeone else in this thread mentioned Teepol. Do you know if
this is still being used in dishwashing deteregent?
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  #8  
Old 12-18-2003, 11:00 PM
Barry Hunt
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Default Ingredients in dishwashing liquid?


"Vance Roos" <[Only registered users see links. ]> wrote in message
news:94554E33475C471AE@130.133.1.4...

<snip>


SLES has a bad rap with the "natural" products cosmetics industry but it's
basically crap as usual, and designed solely to sell their "SLES free"
products.

Yes LABS acid is stronger/harsher (and cheaper!) than SLES and is not used
in shampoos, only detergents. LABS acid is gentler if neutralised with a
mild base like triethanolamine rather than NaOH.

Teepol is a trade name for a detergent concentrate (from Shell??) which I
think contained pretty standard ingredients. Shell made the fatty alcohol
ethoxylates so this was probably a way for them to sell a bit more! I don't
know if it's still around.

Barry


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  #9  
Old 12-19-2003, 08:35 PM
Chris R. Lee
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Default Ingredients in dishwashing liquid?

It doesn't really matter what's in dishwashing liquid, because out
next-door-neighbour decreed in about 1955 that it's wonderful stuff that
doesn't need rinsing off because it's non toxic.

Regards


"Barry Hunt" <[Only registered users see links. ].au> a écrit dans le message de news:
brtber$1uc5$[Only registered users see links. ].au...
don't


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  #10  
Old 01-13-2004, 05:19 PM
Acid Test
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Default re:Ingredients in dishwashing liquid?

Glycols are used in the Gel Type shampoos to give the gel
formulation.The same with hair gel.
It can't be reused.It is permanently in.The fact that it exists in the
shampoo(and in dishsoap in small quantities)makes it almost
impossible to isolate the ingredients unless you had all the proper
sovents,reagents and alcohols for thier extraction


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