Citric acid powder

sineadw

Hi all. I'm getting royally sick of stinking of vinegar for days after processing, and I need to get some for some cyanotypes I'm hoping to do during the week, so I need some citric acid. Does anyone know if I need a particular strength or if the stuff I've seen on sale in asian markets etc will do? Where's the cheapest place to buy? And what dilution do I use or do I need anything else to use it as regular stop in B&W film/paper processing?

Ta muchly

artyeva

i recently got some citric acid in the local chemist here, twas €2.40 for a 100g pot. that was down here though so bound to be cheaper in the big shhhmoke. they made the point to ask me what i wanted it for though... i've heard some places take your name and address when you buy it cause of the whole ''you might be using it to cut up drugs'' thing :pac:

sineadw

Yep- had wondered if that'd be an issue actually:)

poxon

I buy in polish shops (its next to spices ) Dont remember prices, but its in 50g pack, img: http://www.google.com/imgres?imgurl=http://winiary.netpr.pl/pkf/1665/116823/kwas-cytrynowy.jpg&imgrefurl=http://winiary.netpr.pl/1665/presskit/2052&usg=__D81wuHxVN8--ZFvrAISINDqSDWk=&h=2067&w=1476&sz=430&hl=pl&start=0&zoom=1&tbnid=EVKqELC3MDs6zM:&tbnh=161&tbnw=115&prev=/images%3Fq%3Dkwas%2Bcytrynowy%26um%3D1%26hl%3Dpl%26client%3Dfirefox-a%26sa%3DN%26rls%3Dorg.mozilla:pl:official%26biw%3D1276%26bih%3D817%26tbs%3Disch:1&um=1&itbs=1&iact=hc&vpx=379&vpy=91&dur=695&hovh=266&hovw=190&tx=102&ty=168&ei=UNBvTLvBMY7-Oc__5KcN&oei=UNBvTLvBMY7-Oc__5KcN&esq=1&page=1&ndsp=25&ved=1t:429,r:2,s:0

Black Dog

Your local chemist is the easiest place to buy it. We use it when making elderflower cordial each year.

davmigil

artyeva wrote: »

'you might be using it to cut up drugs'' thing :pac:

Just to be pedantic, citric acid is used to convert heroin base to salt so that it can be dissolved for injection. For the OP, probably not the thing to tell the chemist though when you are buying it, stick to the elderflower story.

For the OP: the powder is pure 100% citric acid, though not sure what dilution you will need. Cyanotypes eh? Sounds interesting, do post up your results!