Sodium Fluoride

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remlap12
Posts: 233
Joined: 26 Jun 2014, 12:23
State/Location: NSW

Sodium Fluoride

Post by remlap12 » 03 Apr 2019, 09:40

Hi all,

Does anyone know where I could buy some sodium fluoride......ASAP? In the Newcastle area.
My teacher wants some for tomorrow.................I have phoned a few pharmacies with no luck.
Otherwise she'll have to wait............... :-({|=
Regards
remlap12
science support and problem solver :mail:

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Lyn
Posts: 634
Joined: 16 May 2006, 10:00
Job Title: Lab Assistant (Technician)
School: St. John's College
Suburb: Darwin
State/Location: NT

Re: Sodium Fluoride

Post by Lyn » 03 Apr 2019, 10:28

Sodium Fluoride: DG 6.1 Highly Toxic with severe chronic effects. Known sensitiser. Contact with acids liberates very Toxic gas. Not required in curriculum.
This has been on a banned list of chemicals for the NT and South Australia schools for quite a while now. I don't know what the situation is in NSW. You will not acquire this chemical from a pharmacy. Perhaps the teacher needs to source their own supply from a chemical company and provide a comprehensive risk assessment for its use before it is purchased. It would be a teacher only demonstration. Definitely not for student use. Quite frankly I wouldn't be handling that chemical myself.
There is still a prac in Pearson 10 text - "Halogen precipitates" - that lists potassium fluoride (another chemical on the banned list). Teachers are a bit miffed when they are told that they can't have certain chemicals. But a banned listed chemical is a banned chemical.

bigmack
Posts: 355
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Job Title: Lab Assistant
State/Location: NSW

Re: Sodium Fluoride

Post by bigmack » 03 Apr 2019, 11:50

Hmmm ...just looked up CSIS , it's Yr11/12 .

Apparently it produces highly toxic fumes of Hydrofluoric acid when added to concentrated acids .
Note: Hydrofluoric acid is Banned chemical .

Just looked to see if we have it . We did but it had a green sticker on it :blush2: .....fixed that .

Maybe you can borrow some from another school .

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ELIZABETH
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School: O'Connor Catholic College
Suburb: Armidale
State/Location: NSW

Re: Sodium Fluoride

Post by ELIZABETH » 03 Apr 2019, 12:24

RiskAssess has the solid as Yr11/12 but solutions as Yr 7-12.
I think it was part of a prac in the old chem curriculum??

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macca
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State/Location: NSW

Re: Sodium Fluoride

Post by macca » 03 Apr 2019, 14:08

ELIZABETH wrote:
03 Apr 2019, 12:24
RiskAssess has the solid as Yr11/12 but solutions as Yr 7-12.
I think it was part of a prac in the old chem curriculum??
The same with Potassium Fluoride anything above 0.43M solutions is 11-12. I love RiskAssess :thumbup:

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remlap12
Posts: 233
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State/Location: NSW

Re: Sodium Fluoride

Post by remlap12 » 04 Apr 2019, 07:56

Thanks everyone!

It is for year 12 Chem "investigating an equilibrium system" to be used with iron III thiocyanate, 0.0005M and silver nitrate, 0.1M.
I'll let her know..........
Regards
remlap12
science support and problem solver :mail:

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ELIZABETH
Posts: 208
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School: O'Connor Catholic College
Suburb: Armidale
State/Location: NSW

Re: Sodium Fluoride

Post by ELIZABETH » 04 Apr 2019, 08:31

Investigating an Equilibrium Reaction.docx


Here's the one we did for that topic - worked well and no fluoride.
You do not have the required permissions to view the files attached to this post.

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remlap12
Posts: 233
Joined: 26 Jun 2014, 12:23
State/Location: NSW

Re: Sodium Fluoride

Post by remlap12 » 04 Apr 2019, 09:50

Thanks Elizabeth,

I've printed that off and will give it to my teacher.
Regards
remlap12
science support and problem solver :mail:

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