builders for detergents (1 Viewer)

[zinc]

Why do builders have to be added to anionic detergents? Are they only added to anionic detergents?
Thanks

 

[danz90]

What exactly do u mean by 'builders' ?

All I know is that with anionic detergents, there is a benzene ring after the hydrocarbon chain.

eg. CH2---(CH)13---BENZENE RING---N-(CH3)3 (-)

 

[zinc]

Phosphates or zeolites are added i think

 

[tommykins]

回复: Re: builders for detergents

sulfonates or phosphates.

 

[minijumbuk]

Builders have to be added because anionic detergents do not lather well in hard water, which would form scum.

 

[Undermyskin]

Really, zeolites are increasingly popular now. And just think about it, builders are added to things that contain anionic molecules that will form scum with metallic ions. I don't think you can judge their lathering ability as 'not well' because their activity is just reduced quite a little to some extent, plus they do not form scum, they form soluble complex molecules!

 

[minijumbuk]

Really, zeolites are increasingly popular now. And just think about it, builders are added to things that contain anionic molecules that will form scum with metallic ions. I don't think you can judge their lathering ability as 'not well' because their activity is just reduced quite a little to some extent, plus they do not form scum, they form soluble complex molecules!

What do you mean by this part?

 

[Undermyskin]

Anionic surfactant do not form scum with metallic ions, they form aqueous-soluble complex.

 

[minijumbuk]

That's only after adding builders, right?

 

[Almatari]

Found this from google books

http://books.google.com/books?id=ymtDOXqm15IC&pg=PA8&dq=detergent++builders+environment&ei=gWgWSaHfDoLwsQP_hbmHDA


it is a handbook on detergents and defines what a builder is.
Its usefel for further reading, but I think builders aren't that important for the hsc