Potassium dichromate solution disposal

MSDSs, Storage, Handling, Transport, Labeling, computer management systems, and anything else to do with safety.
Post Reply
Marama T
Posts: 214
Joined: 01 Aug 2017, 12:19
Job Title: Laboratory technician
School: College
State/Location: NSW

Potassium dichromate solution disposal

Post by Marama T »

Hi all,

Can I use a chemical reaction to make a potassium dichromate solution safe for disposal to the sewer, or must it be disposed of via an outside agency? Thanks!
User avatar
Whspa
Posts: 345
Joined: 01 Jun 2006, 10:00
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Whspa »

According to CSIS: Add sodium sulphide, sodium hydroxide or sodium carbonate. Stir and pour the mixture into the heavy metals waste bottle. When settled, the clear solution may be decanted and washed down the sink. Hold the precipitate for collection by licensed waste contractors.
Carol
Marama T
Posts: 214
Joined: 01 Aug 2017, 12:19
Job Title: Laboratory technician
School: College
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Marama T »

Thanks Whspa. Just for clarity, where in CSIS do I find this info? My copy of CSIS seems to encourage putting it down the sink!!! I'm also wondering if the CSIS update is out yet. Thanks again for your help.
Merilyn1
Posts: 1476
Joined: 12 Mar 2013, 08:10
Job Title: Labbie
School: Wollondilly Anglican College
Suburb: Tahmoor
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Merilyn1 »

Marama T wrote:Thanks Whspa. Just for clarity, where in CSIS do I find this info? My copy of CSIS seems to encourage putting it down the sink!!! I'm also wondering if the CSIS update is out yet. Thanks again for your help.
Which system are you working in? Independent and Catholic schools don't yet have an updated CSIS package. I had heard that DET schools have access to a draft - but I'm not sure on that.
Marama T
Posts: 214
Joined: 01 Aug 2017, 12:19
Job Title: Laboratory technician
School: College
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Marama T »

An independent school, but i still have heaps of contacts in DET, I'll ask about that. Thanks.
User avatar
Whspa
Posts: 345
Joined: 01 Jun 2006, 10:00
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Whspa »

I used Appendix E in the CSIS. Potassium dichromate is labelled as 42 in Appendix D, so I would use those instructions. But Appendix D does say it may be disposed of down the sink.
I'm DET, and still using the old CSIS.
User avatar
remlap12
Posts: 340
Joined: 26 Jun 2014, 12:23
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by remlap12 »

There won't be an updated version of CSIS until, at least, late 2018......my understanding after attending a professional learning session with Alan Smith week 1 this term.................
Regards
remlap12
science support and problem solver :mail:
Merilyn1
Posts: 1476
Joined: 12 Mar 2013, 08:10
Job Title: Labbie
School: Wollondilly Anglican College
Suburb: Tahmoor
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Merilyn1 »

That is appalling, especially if you are told that is what you HAVE to follow! There have been two major changes to the WHS acts in that time and dozens of changes to the safety rating of chemicals. They really are behind the game.
User avatar
remlap12
Posts: 340
Joined: 26 Jun 2014, 12:23
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by remlap12 »

Yep, that's what we in the public system have to follow..................
Regards
remlap12
science support and problem solver :mail:
Prima
Posts: 150
Joined: 02 Dec 2014, 11:20
Job Title: Lab assistant
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Prima »

I would say it is now late 2018. Does that mean the CSIS is nearly ready??!!
Merilyn1
Posts: 1476
Joined: 12 Mar 2013, 08:10
Job Title: Labbie
School: Wollondilly Anglican College
Suburb: Tahmoor
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Merilyn1 »

:cheesy: :cheesy: :cheesy:
User avatar
Labbie
Posts: 3234
Joined: 28 Nov 2006, 10:00
Job Title: Retired
Suburb: At Home
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Labbie »

THE CSIS is ready, but its the same old one, that I can see.
Regards Labbie

Lab Manager/Lab Tech, mind reading etc etc
Now retired :wub:
Prima
Posts: 150
Joined: 02 Dec 2014, 11:20
Job Title: Lab assistant
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Prima »

Labbie, is that true? Is it really ready and finished? I didn't notice any change either. Surely we should have been notified (and rewarded for our patience :whistling2: )
In fact, I am checking my disposal methods and cannot find any reference to Iron ii chloride / Ferrous chloride (under both "i" and "f") - what are we meant to do when there's something missing? And it does make me wonder what other mistakes there might be :boring:
Prima
Posts: 150
Joined: 02 Dec 2014, 11:20
Job Title: Lab assistant
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Prima »

I don't believe it is updated - Lead nitrate is still shown as okay for years 7-12
User avatar
remlap12
Posts: 340
Joined: 26 Jun 2014, 12:23
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by remlap12 »

I believe it was only migrated to an online version, not updated. An updated version is supposed to be ready this year..........yeah, well, we will see!!
Regards
remlap12
science support and problem solver :mail:
Lorikeet
Posts: 116
Joined: 30 May 2015, 17:47
Job Title: Purveyor of stuff
School: Broughton Anglican College
Suburb: Menangle
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Lorikeet »

We use rick assess and DO NOT use it at <.0003M it says 7 - 10 can use it - I had documentation universities removed it due to harm to fertility ... Suggest researching before using ... Here is more information on ASSIST too
https://assist.asta.edu.au/question/373 ... id=6c5cca9
With thanks Kate :coffee:
Post Reply