Potassium dichromate solution disposal

MSDSs, Storage, Handling, Transport, Labeling, computer management systems, and anything else to do with safety.
Marama T
Posts: 10
Joined: 01 Aug 2017, 12:19
State/Location: NSW

Potassium dichromate solution disposal

Post by Marama T » 01 Aug 2017, 12:24

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: 331
Joined: 01 Jun 2006, 10:00
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Whspa » 01 Aug 2017, 14:17

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: 10
Joined: 01 Aug 2017, 12:19
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Marama T » 03 Aug 2017, 10:28

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: 837
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 » 03 Aug 2017, 11:06

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: 10
Joined: 01 Aug 2017, 12:19
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Marama T » 03 Aug 2017, 11:13

An independent school, but i still have heaps of contacts in DET, I'll ask about that. Thanks.

User avatar
Whspa
Posts: 331
Joined: 01 Jun 2006, 10:00
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Whspa » 03 Aug 2017, 11:40

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: 228
Joined: 26 Jun 2014, 12:23
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by remlap12 » 07 Aug 2017, 11:57

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: 837
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 » 08 Aug 2017, 08:27

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: 228
Joined: 26 Jun 2014, 12:23
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by remlap12 » 09 Aug 2017, 11:40

Yep, that's what we in the public system have to follow..................
Regards
remlap12
science support and problem solver :mail:

Prima
Posts: 77
Joined: 02 Dec 2014, 11:20
Job Title: Lab assistant
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Prima » 21 Nov 2018, 13:02

I would say it is now late 2018. Does that mean the CSIS is nearly ready??!!

Merilyn1
Posts: 837
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 » 21 Nov 2018, 14:41

:cheesy: :cheesy: :cheesy:

User avatar
Labbie
Posts: 2825
Joined: 28 Nov 2006, 10:00
Name: Sue Rowley
Job Title: Retired
Suburb: At Home
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Labbie » 21 Nov 2018, 15:54

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: 77
Joined: 02 Dec 2014, 11:20
Job Title: Lab assistant
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Prima » 07 Feb 2019, 13:20

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: 77
Joined: 02 Dec 2014, 11:20
Job Title: Lab assistant
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by Prima » 07 Feb 2019, 13:28

I don't believe it is updated - Lead nitrate is still shown as okay for years 7-12

User avatar
remlap12
Posts: 228
Joined: 26 Jun 2014, 12:23
State/Location: NSW

Re: Potassium dichromate solution disposal

Post by remlap12 » 11 Feb 2019, 09:41

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:

Post Reply