Sciencemadness Discussion Board

DCM shrinks genuine coke bottle.

draculic acid69 - 26-10-2019 at 02:24

This was a 1.25l coke bottle last night and today it's about 1/2 that size.see how the label is hanging loosely around the middle.the threads are getting all frosty looking and the bottom is starting to bubble out like a rbf.this is only the second thing that I've found that messes with coke bottles not some flimsy cheap soda brand genuine coke bottles.drain cleaner h2so4 is the other thing.usually I've found them to be pretty solid.
It's only 50ml DCM so in the bin it goes.

j_sum1 - 26-10-2019 at 02:43

Photo?

TheMrbunGee - 26-10-2019 at 03:04

Yea, I have no photos, but it makes PET stretchy and soft, but strong enough to hold bottles form.

draculic acid69 - 26-10-2019 at 03:41

I took a FOTO but forgot to post it.

IMG_20191026_201311.jpg - 461kB

G-Coupled - 26-10-2019 at 03:41

Yeah, DCM is pretty brutal to most plastics, as is Xylene and Toluene IME.

draculic acid69 - 26-10-2019 at 03:44

Coke bottles are fine with toluene xylene or ethylacetate.

G-Coupled - 26-10-2019 at 04:15

Are they (high density?) PTFE?

draculic acid69 - 26-10-2019 at 04:33

Do u mean pet?

Ubya - 26-10-2019 at 05:56

DCM attacks most plastics, glass is always the best in this case. i don't know how you thought that PET would survive dcm.

at least it didn't just melt a hole in the bottom

[Edited on 26-10-2019 by Ubya]

G-Coupled - 26-10-2019 at 06:05

Quote: Originally posted by draculic acid69  
Do u mean pet?

Oops, I believe I did, or also High-density polyethylene (HDPE).

draculic acid69 - 28-10-2019 at 00:10

It's all I had lying around to put waste solvent in.i need to get some glass jars or bottles.

TheMrbunGee - 28-10-2019 at 06:16

Quote: Originally posted by draculic acid69  
It's all I had lying around to put waste solvent in.i need to get some glass jars or bottles.


You just need HDPE jugs for stuff like that, it holds most solvents if not all.

Herr Haber - 28-10-2019 at 07:42

HDPE is not good enough. I had a liter escape the bottle that was still inside the bag...

Someone here called DCM an escape artist. I cant imagine a more accurate description.

karlos³ - 28-10-2019 at 08:20

I have a half full 5l plastic canister of DCM, I received it that way already.
Should I better transfer the stuff to glass bottles?
I have some 2,5l amber glass bottles I could use for that.

Herr Haber - 28-10-2019 at 09:06

@Karlos: I most definitely would.
What I have is in a metal can and a glass bottle.

G-Coupled - 28-10-2019 at 09:27

Quote: Originally posted by karlos³  
I have a half full 5l plastic canister of DCM, I received it that way already.
Should I better transfer the stuff to glass bottles?
I have some 2,5l amber glass bottles I could use for that.


I'd watch the caps, though. What are they made from?

karlos³ - 28-10-2019 at 11:29

I don't know, I received it wrapped in cling film and I haven't removed it so far.
The cap is unmarked as well.
I just kept the cling film wrap, as I thought it would be a good indicator if something unwanted happens.
The canister kept very well for a half year now though.

G-Coupled - 28-10-2019 at 12:03

Ah, what I meant is what are the caps made from on your glass amber storage bottles?

karlos³ - 28-10-2019 at 13:03

Oh, those are old bottles I emptied, one contained MTBE, the other Et2O, but I don't have them at hand right now to look, but I suppose they are pretty much chemical resistant and could take on the DCM as well.

Tsjerk - 28-10-2019 at 13:22

I usually get glass bottles with a ptfe liner. I don't know what the cap is made off.

CharlieA - 28-10-2019 at 16:40

I've found that the best bottles for waste, solvents or otherwise, are 1-gal glass jugs. My source is empty table wine bottles but I am sure there are other sources, although they are probably not acquired so enjoyably.:D

RogueRose - 28-10-2019 at 21:17

I found that 35% H2O2 does similar to PET but it takes longer. I used a ketchup bottle as a temporary bottle and left about 100ml in it and weeks later it had delaminated and the inner bottle had shrunk to 100ml in size & pressurized the liquid. It's strange how it seems there are like 8 layers of plastic in those bottles.

draculic acid69 - 29-10-2019 at 06:18

I seen a video saying that ketchup bottles have 7 layers of plastic