On 19/09/13 16:24, Peter Percival wrote:
> Graham. wrote:
>> On Thu, 19 Sep 2013 15:14:34 +0100, Peter Percival
>> <
peterxp...@hotmail.com> wrote:
>>
>>> What is in B&Q's caustic soda? Well, caustic soda of course you foolish
>>> boy! But the reason I ask is that it is labelled "concentrated caustic
>>> soda" which makes me think it may be mixed with an inert filler. If it
>>> was _just_ caustic soda, I'd expect it to be labelled just "caustic
>>> soda". Any thoughts?
>>
>> Water probably, pure sodium hydroxide is a solid.
>
> This is solid.
>
>> I don't follow your logic though, I would expect something described
>> as "concentrated" to be stronger than the same thing without
>> "concentrated" in the description.
>>
>
> I wouldn't, though I would expect it to be stronger than the same
> thing called "dilute". Suppose you were buying table salt at a
> supermarket: wouldn't you expect it just to be called "table salt" not
> "concentrated table salt? Sugar, just "sugar", and so on? Washing up
> liquid might well be called concentrated meaning that it's got less
> water in than stuff not so labelled. But what has "concentrated
> caustic soda" (solid, remember) got less of than just "caustic soda"?
>
> Mind you, I might be mad.
>
bleach fr example, is a solution of IIRC sodoum hypochl;rite in water.
Concentrated bleach is IIRC teh same but with less water.
Typically caustc soda crysals are 'pure' caustic soda plus wahetever
resisue is left from the chemical process used to produce it - i.e.
about 99% plus - again I am rusty here - but I think it absorbs water
from the air etc in 'pure form' - a bit of water
IIRC again you CAN get caustc soda in solition, which is the esame
dissolved in more, or less water. And is therefore less or lesser
concentrated..
--
Ineptocracy
(in-ep-toc’-ra-cy) – a system of government where the least capable to lead are elected by the least capable of producing, and where the members of society least likely to sustain themselves or succeed, are rewarded with goods and services paid for by the confiscated wealth of a diminishing number of producers.