LABEL FOR PHENOLPHTHALEIN INDICATOR

[kmd]

Hi everyone,

does anyone know how to label Phenolphthalein Indicator, made as directed in 'The Laboratory' :

1g phenolphthalein
300 mL ethanol
200 mL dist water

Also stuck on how to label saturated solutions.


thanks for any ideas.

[Labbie]

Via chemwatch, it has a flammable diamond as it has Ethanol in it.

[Labbie]

This may help

[kmd]

thanks so much Labbie.
I've been using Risk Assess for labels (it's so easy and quick), but as yet, it doesn't do mixtures, so I got a bit stumped.
I should have gone straight to ChemWatch myself.
Appreciate your attachment... saves me from locating it.

Kmd

[cherrycat22]

Is there a Stock Standard Recipe for Phenolphthalein Indicator Solution for use in Schools? I have never made it before and my Methods folder has 2 different recipes and the above recipe (3.) is different again

1.1 g in 500ml dist water and 500ml Ethanol (1 litre)
2. 0.2g in 1 litre Methylated spirits
3. 2g in 600ml ethanol and 400ml distilled water

[Merilyn1]

I just use the one from the Laboratory, which is listed above.
Incidentally, Riskassess has upgraded their labelling and you can now create your own labels.

[linotas]

They have a label for the indicator in the standard labels in Risk Assess

If you type in Phenolphthalein you will get a whole heap of choices including:

Phenolphthalein >0.1% wt/wt in ethanol 24-70% wt/wt

[linotas]

phenolphthalein -0.1% wt-wt in ethanol 24-70% wt-wt.pdf

[Shona]

Is there a Stock Standard Recipe for Phenolphthalein Indicator Solution for use in Schools? I have never made it before and my Methods folder has 2 different recipes and the above recipe (3.) is different again

1.1 g in 500ml dist water and 500ml Ethanol (1 litre)
2. 0.2g in 1 litre Methylated spirits
3. 2g in 600ml ethanol and 400ml distilled water

I have made all 3 but the third one is the best and has a good shelf life.

[Shell1]

Our method is:
Dissolve 2g phenolphthalein in 600ml ethanol. Make up to 1L with distilled water. Filter