"Los Alfaques" disaster. On July 1, 1978, a tanker truck carrying propylene explodes next to a camping site in Alcanar, near Tarragona, Spain. 243 died (100 instantly) and over 300 suffered high degree burns. The reason was overloading the truck and high temperatures caused a BLEVE explosion.
๐Ÿ‘︎ 8k
๐Ÿ“ฐ︎ r/CatastrophicFailure
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/proflight27
๐Ÿ“…︎ Jul 15 2020
๐Ÿšจ︎ report
Terpene infused 100% propylene glycol. Dmt turning dark brown.. any suggestions how to improve?
๐Ÿ‘︎ 6
๐Ÿ“ฐ︎ r/DMT
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/mesimani
๐Ÿ“…︎ Oct 06 2020
๐Ÿšจ︎ report
I thought PG- Propylene Glycol is supposed to be odorless? I bought some to put Diazepam into solution and I'm worried mine smells like hand sanitizer

PG is supposed to be odorless or NEARLY odorless but this has a chemical smell to it, here's what it is Propylene Glycol Pharma Grade Better Than Food Grade 99% + USP/EP PURE , but even 2mg added to 100mls of water smells like hand sanitizer how come? I'm scared to use it now, has anyone else noticed a chemical smell to PG at all?

๐Ÿ‘︎ 3
๐Ÿ“ฐ︎ r/benzorecovery
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/QuietPace9
๐Ÿ“…︎ Sep 18 2020
๐Ÿšจ︎ report
Sore Throat Allergy to Beeswax and Propylene Glycol

For the past few years, I have been using Sudocrem and an eyebrow gel quite religiously. However, lately over a couple months, it seems that I have developed an instant sore throat upon applying these products. No skin irritation whatsoever, just a sore throat- which goes away once I wipe off the product.

I looked up the ingredients in both Sudocrem and the Glossier gel and they happen to both have beeswax and propylene glycol. I feel that a throat irritation is quite uncommon with these- anyone else allergic to these ingredients as well? How different is the reaction for you?

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/Allergy
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/ananyeah31
๐Ÿ“…︎ Oct 03 2020
๐Ÿšจ︎ report
[Misc] Are all glycols created equally? I'm allergic to Butylene Glycol and know to stay away from Propylene Glycol as well. Should I also avoid Caprylyl Glycol and Hexylene Glycol? I can't find any information on this
๐Ÿ‘︎ 9
๐Ÿ“ฐ︎ r/SkincareAddiction
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/genevieveoliver
๐Ÿ“…︎ Aug 29 2020
๐Ÿšจ︎ report
[ASAP] An Ultramicroporous Metalโ€“Organic Framework for High Sieving Separation of Propylene from Propane

Journal of the American Chemical SocietyDOI: 10.1021/jacs.0c09466

https://ift.tt/3cJPOH6

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/JACS
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/TomisMeMyselfandI
๐Ÿ“…︎ Sep 30 2020
๐Ÿšจ︎ report
Ultrafast Semiโ€Solid Processing of Highly Durable ZIFโ€8 Membranes for Propylene/Propane Separation

A semiโ€solid process, with ultrafast, highโ€yield synthesis and outstanding scalability, is developed to fabricate ZIFโ€8 membranes on commercial flatโ€sheet ceramic substrates. The membrane is highly selective and durable for C3H6/C3H8 separation. A prototypical plateโ€andโ€frame membrane module with effective membrane area of about 300โ€…cm2 has been implemented for efficient C3H6/C3H8 separation.

Abstract

ZIFโ€8 membranes have emerged as the most promising candidate for propylene/propane (C3H6/C3H8) separation through its precise molecular sieving characteristics. The poor reproducibility and durability, and high cost, thus far hinder the scalable synthesis and industrial application of ZIFโ€8 membranes. Herein, we report a semiโ€solid process featuring ultrafast and highโ€yield synthesis, and outstanding scalability for reproducible fabrication of ZIFโ€8 membranes. The membranes show excellent C3H6/C3H8 separation performance in a wide temperature and pressure range, and remarkable stability over 6โ€…months. The ZIFโ€8 membrane features dimethylacetamide entrapped ZIFโ€8 crystals retaining the same diffusion characteristics but offering enhanced adsorptive selectivity for C3H6/C3H8. The ZIFโ€8 membrane was prepared on a commercial flatโ€sheet ceramic substrate. A prototypical plateโ€andโ€frame membrane module with an effective membrane area of about 300โ€…cm2 was used for efficient C3H6/C3H8 separation.

https://ift.tt/34vFQa9

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/ACIE
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/TomisMeMyselfandI
๐Ÿ“…︎ Sep 29 2020
๐Ÿšจ︎ report
Advice needed please for making a "homemade" Diazepam Solution using PG ( Propylene glycol) to do a daily micro liquid taper (DMLT)

I would like to ask about advice I was given regarding using Propylene glycol as a solvent for Diazepam pills and adding water to turn it into a suspension .

Does this work, and does Does it stay in suspension ? And has anyone successfully tapered this way?

I tried it with Vodka, and Milk but both didn't agree with me, all it did was uptick my already severe symptoms was unable to taper.

The advice I was given is to using my 2 mg pill, to add 1 to 2 ml of Propylene glycol per 1 mg of pill making it 2 to 4 mg PG for a 2 mg pill , then add 100 ml of water which would make it a suspension .

And that there is no need to shake it, as the Diazepam would be equally distributed throughout just subtract small amounts with a syringe daily.

I was also told to minus the amount of PG from the water e.g if you use 2 mg PG then use 98 ml of water+2 mg of PG which would then=100 ml, and subtract my daily micro cut from there

๐Ÿ‘︎ 3
๐Ÿ“ฐ︎ r/benzorecovery
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/QuietPace9
๐Ÿ“…︎ Sep 15 2020
๐Ÿšจ︎ report
Discovering the Elusive Global Minimum in a Ternary Chiral Cluster: Rotational Spectra of Propylene Oxide Trimer

What can be done do when theory fails to provide a structural candidate? Using experimental isotopic data and a Python program, we establish a carbon backbone structure and eventually identify the elusive heterochiral propylene oxide trimer shown from 89 initial candidates.

Abstract

The chirality controlled conformational landscape of the trimer of propylene oxide (PO), a prototypical chiral molecule, was investigated using rotational spectroscopy and a range of theoretical tools for conformational searches and for evaluating vibrational contributions to effective structures. Two sets of homochiral (PO)3 rotational transitions were assigned and the associated conformers identified with theoretical support. One set of heterochiral (PO)3 transitions was assigned, but no structures generated by one of the latest, advanced conformational search codes could account for them. With the aid of a Python program, the carbon atom backbone and then the heterochiral (PO)3 structure were generated using 13C isotopic data. Excellent agreement between theoretical and experimental rotational constants and relative dipole moment components of all three conformers was achieved, especially after applying vibrational corrections to the rotational constants.

https://ift.tt/2FhRF96

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/ACIE
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/TomisMeMyselfandI
๐Ÿ“…︎ Oct 08 2020
๐Ÿšจ︎ report
Does anyone also have an allergy to propylene glycol?

I have 6 official allergies including PG so I can't use a lot of the common creams that people with eczema use(ex. cerave). None of my creams/non steroid treatments are effective in treating both the itch/rash/dryness other than sometimes my allergy pills and steroid creams, does anyone have any suggestions for creams/treatments?

๐Ÿ‘︎ 6
๐Ÿ“ฐ︎ r/eczema
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/aseryme
๐Ÿ“…︎ Aug 09 2020
๐Ÿšจ︎ report
2-cb-fly in propylene glycol

Hey,

I'd like to make a volumetric solution of 2-cb-fly in propylene glycol at a concentration of 20mg/ml. I am unable to find any solubility information online though.

Anyone have any experience with this? Thanks

๐Ÿ‘︎ 7
๐Ÿ“ฐ︎ r/researchchemicals
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/kaz12
๐Ÿ“…︎ Sep 09 2020
๐Ÿšจ︎ report
I have propylene glycol etizolam solutions but they are very strong. Can I dillute them with water or some svedka I have laying around M

So I ended up with stupidly strong bottles of these to the point where I have to just put a little bit on my finger and lick it off to get faded on it. I dont have any ever clear or plain PG and I know those drugs are already soluble in alcohol so I was wondering if i could split the bottles in half with vodka as the other half so I could accurately measure it. I take it water wouldn't work even though the pg is already holding the substances? Cause I know pg and water mix very well but I wouldn't want the water to ruin the chemical.

๐Ÿ‘︎ 3
๐Ÿ“ฐ︎ r/researchchemicals
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/TheBlackPrism824
๐Ÿ“…︎ Aug 12 2020
๐Ÿšจ︎ report
Polar Isotactic and Syndiotactic Polypropylenes by Organozirconiumโ€Catalyzed Maskingโ€Reagentโ€Free Propylene and Aminoโ€“Olefin Copolymerization

Polar functionalized isotactic and syndiotactic polypropylenes (PPs) are synthesized by direct, maskingโ€reagentโ€free propylene and aminoโ€“olefin (AO, CH2=CH(CH2) x NnPr2, x=2, 3, 6) copolymerizations using the activated precatalysts racโ€[Me2Si(indenyl)2]ZrMe2 and [Me2C(Cp)(fluorenyl)]ZrMe2, respectively. Polymerization activities at 25โ€‰ยฐC are as high as 4208 and 535โ€…kg/(molโ€‰hโ€‰atm) with AO incorporation up to 4.0โ€…molโ€‰% and 1.6โ€…molโ€‰%, respectively

Abstract

Polar functionalized isotactic and syndiotactic polypropylenes (PPs) are synthesized by direct, maskingโ€reagentโ€free propylene and aminoโ€“olefin (AO, CH2=CH(CH2) x NnPr2, x=2, 3, 6) copolymerizations using the activated precatalysts racโ€[Me2Si(indenyl)2]ZrMe2 and [Me2C(Cp)(fluorenyl)]ZrMe2, respectively. Polymerization activities at 25โ€‰ยฐC are as high as 4208 and 535โ€…kg/(molโ€‰hโ€‰atm) with AO incorporation up to 4.0โ€…molโ€‰% and 1.6โ€…molโ€‰%, respectively. Remarkably, introducing the aminoโ€olefin comonomers significantly enhances stereoselection for both isotactic (mmmm: 59.5โ€‰%โ†’91.0โ€‰%) and syndiotactic (rrrr: 66.3โ€‰%โ†’81.3โ€‰%) products.

https://ift.tt/330AEu0

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/ACIE
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/TomisMeMyselfandI
๐Ÿ“…︎ Sep 03 2020
๐Ÿšจ︎ report
anyone familiar with ryse bars? picked these up from a reputable local shop today. noticed that the 2 original bars have โ€œeliquidโ€ double printed and donโ€™t have a barcode, and that all 3 have propylene GLUCOL in the ingredients list. fakes or just shitty packaging? reddit.com/gallery/hzpef7
๐Ÿ‘︎ 4
๐Ÿ“ฐ︎ r/Vaping
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/kxngpvrk
๐Ÿ“…︎ Jul 28 2020
๐Ÿšจ︎ report
Scientist Discovers that Inhaled Propylene Glycol Kills the Flu Virus electroniccigarettesrevieโ€ฆ
๐Ÿ‘︎ 290
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/mkweise
๐Ÿ“…︎ Mar 12 2020
๐Ÿšจ︎ report
Propylene Glycol for case lube?

I have access to a lot of Propylene Glycol, can I use it, or mix it with say 99% alcohol, to make a case lube instead of buying it?

I know it is used in a lot of food based products and even in personal lube. I also know this food grade (not that it matters much).

Has anyone tried it?

๐Ÿ‘︎ 5
๐Ÿ“ฐ︎ r/reloading
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/BatteryPoweredBrain
๐Ÿ“…︎ Jun 12 2020
๐Ÿšจ︎ report
Propylene Glycol vs Dipropylene Glycol

I have an allergy to propylene glycol that causes eczema all up and down my arms, neck and eyelids. Is dipropylene glycol close to the same thing as PG? I don't want to risk trying it if it could cause the same reaction.

๐Ÿ‘︎ 3
๐Ÿ“ฐ︎ r/eczema
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/dotecare
๐Ÿ“…︎ Aug 10 2020
๐Ÿšจ︎ report
propylene glycol questions
  1. does propylene glycol (PG) emulsify mineral oil?

  2. what happens to PG over time in a indoor air environment? - mold, evaporate, harden, etc.

  3. would PG by itself have any effect on wood? - I've found DIY mold and termite treatments that involve mixing PG with borax and/or dish soap, but I'm curious as to what properties the PG alone imparts on wood or is it just an agent for the borax/soap in these mixtures?

Thanks in advance!

๐Ÿ‘︎ 5
๐Ÿ“ฐ︎ r/chemistry
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/spectredirector
๐Ÿ“…︎ Jun 13 2020
๐Ÿšจ︎ report
Solid idea to open three minds of three police force. My electric vaporizer i mix 1g per 3ml half and half vegetable Glycerin and propylene glycol.. so with this math.. if each container is 2L... that's 2 machines.. รท3 ml... that's 1 1/3 kilos of dmt. Per city. Lol
๐Ÿ‘︎ 16
๐Ÿ“ฐ︎ r/DMT
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/JackinCockel
๐Ÿ“…︎ Jun 06 2020
๐Ÿšจ︎ report
Scientist Discovers that Inhaled Propylene Glycol Kills the Flu Virus electroniccigarettesrevieโ€ฆ
๐Ÿ‘︎ 350
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/TimInElmira
๐Ÿ“…︎ Feb 01 2020
๐Ÿšจ︎ report
Propylene Glycol and Cetaphil

I did some patch testing on monday and found out today I'm allergic to two common chemicals: Propylene Glycol and Benzoylperoxide.

Here's the part that confuses me, the doctor did a quick google and says Cetaphil has the Propylene Glycol, but at home I'm reading the back and I can't find it on there at all, the only thing I can find on google is that the Cetaphil Facial Cleanser has the Propylene Glycol but no mention of the moisturing lotion. Regardless I'll stop using it for 4 weeks and see the results, the Cetaphil lotion is literally the only chemical apart from water that touches my skin.

Do you any of you guys have the same allergy? Have you guys done patch testing?

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/eczema
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/nonnusnox
๐Ÿ“…︎ Jul 10 2020
๐Ÿšจ︎ report
Where can you buy topical finasteride without propylene glycol?

I am looking for a stable place to buy 5%/0.1% minox/finasteride solution (foam or liquid) without propylene glycol. Morr F has PG, so that's a pass for me. Where can I get my hands on this? I would appreciate your response.

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/Hairloss
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/changexpert
๐Ÿ“…︎ Jul 30 2020
๐Ÿšจ︎ report
Cleaning prints with Propylene Glycol

A while back I had heard somewhere that ResinAway was largely made with Propylene Glycol. Not sure if that's true (though IIRC it was an ingredient on it's safety sheet), but I bought a bottle to try it out anyway for cleaning prints. Here are some of my findings.

  • It cleans prints pretty well; I use a pickle jar and toothbrush to clean my prints, and it worked as well as IPA.
  • Can be diluted with water somewhat, but it may need to be shaken/stirred after a time as it may split over time.
  • It's non-flammable and non-toxic (it's food safe).
    • Obviously, you still need to take care when disposing of it once it's used.
  • Very little odour - it has a faint cooking oil smell.
    • Cleaned prints don't hold this smell.
  • It has an oily consistency, which can make it a bit difficult to differentiate cleaned areas of your prints with goopy resiney areas, and makes both clean and dirty prints slippery.
    • Diltuing with water should help this issue somewhat.
  • It's pretty cheap, and easy to acquire online.

If you're interested, here's an Amazon link for something similar to what I got.

If anyone else has tried this, I'd love to hear if you had a similar experience.

๐Ÿ‘︎ 6
๐Ÿ“ฐ︎ r/AnycubicPhoton
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/Vanguard3000
๐Ÿ“…︎ Jun 12 2020
๐Ÿšจ︎ report
[ASAP] Critical Roles of Doping Cl on Cu2O Nanocrystals for Direct Epoxidation of Propylene by Molecular Oxygen

Journal of the American Chemical SocietyDOI: 10.1021/jacs.0c03882

https://ift.tt/2EHVrZ9

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/JACS
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/TomisMeMyselfandI
๐Ÿ“…︎ Aug 05 2020
๐Ÿšจ︎ report
Propylene Glycol USP, Polyethylene Glycol USP, Vegetable Glycerin USP,Flavoring Extract ( PLant based an cannabis based), and MCT C 8 -10..What do you know about these things and what do yo uthink about them in terms of mixing with CBD,D8, CBG, and other distillates?

Just would like to get some feedback related to title on what the community knows about these substances and how they feel about these substances.

Please if you have an opposing idea or feeling different then someone else may possibly post don't start an argument. That being said nothing wrong with disagreeing civilly and preferably with linked scientific evidence.

Given some responses may be anecdotal they are still desired as it is the accumulation of anecdotal evidence that can lead the way to the truth.

Thanks...

๐Ÿ‘︎ 4
๐Ÿ“ฐ︎ r/delta8
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/MYCBDHAVEN
๐Ÿ“…︎ May 26 2020
๐Ÿšจ︎ report
Newbie to using Min here. Propylene Glycol: I read online that this is the ingredient in Min that helps it penetrate the skin to the hair follicles. Min liquid contains it, Min foam doesnโ€™t.

I find the liquid difficult to get down to the scalp, foams much easier IMO. Does this ingredient make a big difference to overall effectiveness though? :)

All advice and your own experiences welcome. Thanks โ˜บ๏ธ๐Ÿ™๐Ÿผ

๐Ÿ‘︎ 4
๐Ÿ“ฐ︎ r/tressless
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/sokishikku
๐Ÿ“…︎ Jun 10 2020
๐Ÿšจ︎ report
Can anyone help me find propylene glycol? Iโ€™m struggling to find it in saudi

Title^^

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/saudiarabia
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/55FOV
๐Ÿ“…︎ Jul 06 2020
๐Ÿšจ︎ report
Vitamin c (LAA) serum in propylene glycol?

Can I make a 20% LAA serum with 80% propylene glycol? I believe there is a The Ordinary serum that has 20% vit c in propanediol. From some googling I see that ~17% LAA can be dissolved in propanediol? Anyone have any idea what this number will be for propylene glycol? I believe propylene glycol and propanediol are fairly similar but different irritation potential.

So in short, wondering how much LAA can be soluble in propylene glycol and if it is safe to use propylene glycol at such high concentration? Any other stuff I should add to make it better (what preservatives? Do I need a preservative since it'll be low pH?) ?

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/DIYBeauty
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/pewpewsquared
๐Ÿ“…︎ May 30 2020
๐Ÿšจ︎ report
Mixing propylene glycol with melted chocolate

So I just bought some sweet looking molds to make cute shaped chocolates out of and I want to add around 1-2 ml of propylene glycol which Iโ€™ve dissolved flavor in. I know that if you add water to cooling chocolate it completely fucks it and prevents it from hardening

My question: will 1-2 ml of propylene glycol prevent the chocolate from hardening right?

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/Cooking
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/insomnomo
๐Ÿ“…︎ Aug 01 2020
๐Ÿšจ︎ report
Made my first tincture! 1/8th Decarbed herb and half a cup of propylene glycol in sous vide for about 4 hours. Came out well but it's kinda bitter, appreciate any tips on how to improve it!
๐Ÿ‘︎ 9
๐Ÿ“ฐ︎ r/SousWeed
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/seanpuppy
๐Ÿ“…︎ Apr 17 2020
๐Ÿšจ︎ report
Deodorant free of baking soda and propylene glycol

Heyo, anybody have suggestions for deodorant free of those things and reasonably priced? My skin rashes with the former and burns and peels with the latter.

I loved aromaco from lush. It smells great, it's really nice texturally, and works super well. And then I developed a baking soda sensitivity.

I've had a lot of success with pit liquor, but they're too expensive for me to justify continuing to purchase from them. I tried to recreate their deodorant at home by mixing vodka, salt, arrowroot powder, and essential oil. It works better than not wearing deodorant, but not by much.

Meow meow tweet works really well too, but I go through it too quickly for it to economical.

I'm running out of my vodka one soon, so I would really appreciate your suggestions. DIY or store bought are both fine. I am a smelly person with sensitive armpits and it sucks.

๐Ÿ‘︎ 3
๐Ÿ“ฐ︎ r/ZeroWaste
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/ratlenin
๐Ÿ“…︎ May 19 2020
๐Ÿšจ︎ report
Cleaning prints with Propylene Glycol /r/AnycubicPhoton/commentโ€ฆ
๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/ElegooMars
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/Vanguard3000
๐Ÿ“…︎ Jun 15 2020
๐Ÿšจ︎ report
Every time I put cetaphil on my face for some unknown reason my lips dry out. The ingredients of Cetaphil are as follows: Water, Cetyl Alcohol, Propylene Glycol, Sodium Lauryl Sulfate, Stearyl Alcohol, Methylparaben, Propylparaben, Butylparaben Does any of this cause this dryness on my lips?

?

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/Rosacea
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/Antonis9820
๐Ÿ“…︎ Jun 06 2020
๐Ÿšจ︎ report
Dry Roses, Me, Clay and painted by propylene, 2020
๐Ÿ‘︎ 23
๐Ÿ“ฐ︎ r/Art
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/GHHAUS
๐Ÿ“…︎ Jun 26 2020
๐Ÿšจ︎ report
Propylene glycol

What are the rations to keep brew from freezing ????

๐Ÿ‘︎ 3
๐Ÿ“ฐ︎ r/lean
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/phoeniciaheat
๐Ÿ“…︎ Jun 06 2020
๐Ÿšจ︎ report
Propylene new scene be like v.redd.it/246ia9cw4l841
๐Ÿ‘︎ 1k
๐Ÿ“ฐ︎ r/KGATLW
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/bakstenen
๐Ÿ“…︎ Jan 03 2020
๐Ÿšจ︎ report
What chemical reaction forms from the crosslinking of fumaric acid and propylene glycol with styrene. Chemistry isn't my forte.
๐Ÿ‘︎ 91
๐Ÿ“ฐ︎ r/homeworld
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/RunningFromYou88
๐Ÿ“…︎ Feb 25 2020
๐Ÿšจ︎ report
No propylene glycol
๐Ÿ‘︎ 3
๐Ÿ“ฐ︎ r/CAPic
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/AmericanMuskrat
๐Ÿ“…︎ Jun 07 2020
๐Ÿšจ︎ report
Alternative to Propylene Glycol or Propanediol 1,3?

Iโ€™ve been tinkering with formulating a whipped soap base. I found a recipe that called for SCI, CocaB, glycerin, propylene glycol, stearic acid, and water. I happened to have Propanediol 1,3 in my stash, so I used that in place of the propylene glycol and it worked fine. However, I happen to have a lot of sodium lactate (for cold process soap making) and was wondering if theres any reason it wouldnโ€™t work, since itโ€™s also a humectant. I love ingredients that can be used for more than one formula. Thanks in advance!

๐Ÿ‘︎ 7
๐Ÿ“ฐ︎ r/DIYBeauty
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/hamsterwaffles
๐Ÿ“…︎ May 13 2020
๐Ÿšจ︎ report
Does it matter if PG (Propylene Glycol) is a Pharmaceutical grade or food grade?

I am about to order a liter of PG from eBay because it's 10 times cheaper than PG in vape stores and they usually have a PG/VG mix...

So does it matter if Propylene Glycol is Pharmaceutical grade (99%+) or Food / Cosmetic Grade (99.8%)? The only difference I was able to notice is how pure is pharmaceutical grade.

Edit: I bought pharmaceutical 99%+ i hope the powders will melt faster in pharma grade

๐Ÿ‘︎ 8
๐Ÿ“ฐ︎ r/researchchemicals
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/Cheap_Mathematician
๐Ÿ“…︎ Apr 30 2020
๐Ÿšจ︎ report
Dissolving CO2 hash oil into propylene glycol

I recently purchased two vape cartridges containing co2 hash oil extract. The problem was that that cartridges were incompatible with the vape I currently have. I had some 0mg nicotine vape liquid lying around, so I thought "what the heck" and emptied both the cartridges into the vape liquid. I figured that if I did this, then put the vape liquid in a heat bath combined with some vigorous shaking I'd be able to make it into vape liquid. I'm not entirely sure that was the right move, but I'll keep you posted. Does this seem like a good way to fix my problem or did I just waste the cartridges?

๐Ÿ‘︎ 8
๐Ÿ“ฐ︎ r/CannabisExtracts
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/FloppyJack420
๐Ÿ“…︎ May 17 2020
๐Ÿšจ︎ report
[Skin Concerns] Moisturizer suggestions for someone who's allergic to propylene glycol?

After a bad month and a half of facial swelling/welting, I got patch testing done and discovered that I'm allergic to propylene glycol :/.

This stuff is in EVERYTHING. Toothpaste, paint, sour cream (lol).

I have very dry, sensitive, and eczema prone skin, so I'm looking for literally the gentlest PG-free moisturizer options.

Cetaphil lotion doesn't contain PG (or any of the other chemicals I tested positive for), but it causes my eyes to swell up.

So, all that being said... any suggestions?

๐Ÿ‘︎ 3
๐Ÿ“ฐ︎ r/SkincareAddiction
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/Sentient_cucumber
๐Ÿ“…︎ Apr 29 2020
๐Ÿšจ︎ report
How much Propylene Glycol to stop my brew freezing?

Think thatโ€™s the right thing but donโ€™t know what percentage to use?

T.I.A ๐Ÿ‡ฌ๐Ÿ‡ง

๐Ÿ‘︎ 3
๐Ÿ“ฐ︎ r/lean
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/Chezney98888
๐Ÿ“…︎ Jun 06 2020
๐Ÿšจ︎ report
Dissolving propylene glycol

This is not about dissolving a drug in PG solution. I tried to dissolve 500mg of Flualprazolam in 200ml of PG solution. Unfortunately I didnโ€™t realize the PG solution was cut with something and is meant for cigar humidifiers. The Flualprazolam just sits at the bottom of the solution no matter how much I agitate it or give it a warm bath. Is there any way I can dissolve the PG solution without destroying my Flualprazolam? Thanks in advance

๐Ÿ‘︎ 6
๐Ÿ“ฐ︎ r/researchchemicals
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/kooter1987
๐Ÿ“…︎ May 19 2020
๐Ÿšจ︎ report
Isotactic Poly(propylene oxide): A Photodegradable Polymer with Strain Hardening Properties pubs.acs.org/doi/10.1021/โ€ฆ
๐Ÿ‘︎ 3
๐Ÿ“ฐ︎ r/ScienceUncensored
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/ZephirAWT
๐Ÿ“…︎ May 11 2020
๐Ÿšจ︎ report
Cleaning prints with Propylene Glycol /r/AnycubicPhoton/commentโ€ฆ
๐Ÿ‘︎ 3
๐Ÿ“ฐ︎ r/resinprinting
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/Vanguard3000
๐Ÿ“…︎ Jun 15 2020
๐Ÿšจ︎ report
TIL that respiratory exposure to propylene glycol (vaping) disrupts molecular circadian rhythms and likely increases health risks in a similar fashion to working night shifts, or irregular shifts. ncbi.nlm.nih.gov/pmc/artiโ€ฆ
๐Ÿ‘︎ 40
๐Ÿ“ฐ︎ r/todayilearned
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/jonnywholingers
๐Ÿ“…︎ Jan 30 2020
๐Ÿšจ︎ report
Can you volumetricly dose DOC in PG (propylene glycol)?

I'm only seeing posts talking about mixing it with alcohol 40% or higher.

If not would 91% isopropyl alcohol work? I'd be dosing it at 1mg/mL so you wouldn't be consuming a lot of iso.

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/researchchemicals
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/Mountain-Animator
๐Ÿ“…︎ Mar 31 2020
๐Ÿšจ︎ report
Propylene glycol with eczema

So maybe I'm late cluing in on this, but I did some searching and couldn't find anything here so I thought I'd share as I only figured this out today. Propylene glycol (an emollient/emulsifier found in many things from shampoos to moisturizers to cake mix) can be a huge trigger when used topically for people with eczema. It's counterintuitive because emollients are supposed to be hydrating and so it's often used in eczema-targeted products but many studies show that people with eczema are at a much higher rate for a contact allergy to PG (sources: National Library of Medicine, American Contact Dermatitis Society, and many other individual papers -- it was the ACDS's allergen of the year in 2018).

I only came across this because I learned it myself the hard way. I personally didn't believe my lifelong genetic eczema was affected by contact allergies because I've done my fair share of spot tests and never found anything. I went to use up an old bottle of shampoo last week that I forgot I had and my eczema, which had been under control for several weeks, suddenly flared back up again. I only thought to check the ingredients today and found that the shampoo was free of the usual suspects -- no fragrance, no drying SLS, etc. -- but it did contain propylene glycol. Reviewed all the other products I was using when my skin cleared up, and none of them had PG. I'll do a few spot tests to confirm it but it feels like a really good start and gives me back some feeling of control.

I guess this is half-PSA, half-personal victory ramble. Anyways, I do hope this helps someone!

๐Ÿ‘︎ 7
๐Ÿ“ฐ︎ r/eczema
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/bubzu
๐Ÿ“…︎ Jun 06 2020
๐Ÿšจ︎ report
Dropped etizolam in propylene glycol on my skin. Is it possible I'm feeling it or placebo?

I feel messed up a bit but I'm not sure if it's all in my head. Wasn't able to find any info online. Does anybody know if it can affect you transdermally?

๐Ÿ‘︎ 10
๐Ÿ“ฐ︎ r/researchchemicals
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/johannthegoatman
๐Ÿ“…︎ Apr 10 2020
๐Ÿšจ︎ report
Cleaning prints with Propylene Glycol /r/AnycubicPhoton/commentโ€ฆ
๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/EpaxX1Owners
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/Vanguard3000
๐Ÿ“…︎ Jun 15 2020
๐Ÿšจ︎ report
Just a heads up worried about the Corona threat. We might be winning by accident?:THE BACTERICIDAL ACTION OF PROPYLENE GLYCOL VAPOR ON MICROORGANISMS SUSPENDED IN AIR. I | Journal of Experimental Medicine rupress.org/jem/article/7โ€ฆ
๐Ÿ‘︎ 7
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/comawhite12
๐Ÿ“…︎ Mar 06 2020
๐Ÿšจ︎ report
Epsom salt or Propylene Glycol?? And Surfactant preferences?

Hi just wanted to see if anyone had any thoughts about using epsom salt or PG when refilling lamps i have been told PG works better?Also does anyone know a good Surf i currently use clear dish soap palmolive brand but have had some small.sticking issues with this anyone have a better option?

๐Ÿ‘︎ 7
๐Ÿ“ฐ︎ r/Lavalamps
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/Sarcon2009
๐Ÿ“…︎ Mar 19 2020
๐Ÿšจ︎ report
We're trying to wash our 2F-DCK as it was sticky and yellow. My friend accidentally added propylene glycol instead of isopropyl alcohol and so we just added the isopropyl anyway and are going to try to filter + recrystallise. Do you think this will work?

My friend is a chemistry student and so we'll try to figure out it out ourselves vut any help or advice would be appreciated

๐Ÿ‘︎ 12
๐Ÿ“ฐ︎ r/researchchemicals
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/Brosentino
๐Ÿ“…︎ Jan 18 2020
๐Ÿšจ︎ report
Propylene glycol (PG) is regarded as safe to eat but not to vape and inhale. In fact the manufacturers of PG have a warning that it would not be vaped. Perhaps it is to avoid $billion lawsuits if health issues are found later. linkedin.com/pulse/manufaโ€ฆ
๐Ÿ‘︎ 6
๐Ÿ“ฐ︎ r/quit_vaping
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/ForensicScienceGuy
๐Ÿ“…︎ Apr 05 2020
๐Ÿšจ︎ report
Ultrafast Semiโ€Solid Processing of Highly Durable ZIFโ€8 Membranes for Propylene/Propane Separation

ZIFโ€8 membrane has emerged as the most promising candidate for propylene/propane (C3H6/C3H8) separation due to its precise molecular sieving characteristics. The poor reproducibility and durability, high cost, thus far pose challenges on the scalable synthesis and industrial application of ZIFโ€8 membranes. Herein, we report a semiโ€solid process featured with ultrafast and highโ€yield synthesis, and outstanding scalability for reproducible fabrication of ZIFโ€8 membranes. The resultant membranes exhibit excellent C3H6/C3H8 separation performance in a wide range of temperature and pressure, and remarkable stability over a span of 6 months. The new ZIFโ€8 membrane features dimethylacetamide entrapped ZIFโ€8 crystals retainning same diffusion charactristics but offering enhanced adsorptive selectivity for C3H6/C3H8. The ZIFโ€8 membrane was successfully fabricated on commercial flatโ€sheet ceramic substrate. A prototypical plateโ€andโ€frame membrane module with effective membrane area of about 300 cm2 was implemented for efficient C3H6/C3H8 separation. Overall, the reliable reproducibility and durability as well as scalability of ZIFโ€8 membranes have greatly unlocked its commercialization potential.

https://ift.tt/34vFQa9

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/ACIE
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/TomisMeMyselfandI
๐Ÿ“…︎ Aug 26 2020
๐Ÿšจ︎ report
Polar Isotactic and Syndiotactic Polypropylenes via Organoโ€zirconiumโ€Catalyzed Maskingโ€Reagentโ€Free Propylene + Aminoโ€Olefin Copolymerization

Polar functionalized isotactic and syndiotactic polypropylenes (PPs) are synthesized by direct, masking reagentโ€free propylene + aminoโ€olefin (AO, CH 2 =CH(CH 2 ) x N n Pr 2 , x = 2, 3, 6) copolymerizations using the activated precatalysts rac โ€[Me 2 Si(indenyl) 2 ]ZrMe 2 and [Me 2 C(Cp)(fluorenyl)]ZrMe 2 , respectively. Polymerization activities at 25 ยฐC are as high as 4208 and 535 kg/(molยทhยทatm) with AO incorporation up to 4.0 mol% and 1.6 mol%, respectively. Remarkably, introducing the aminoโ€olefin comonomers significantly enhances stereoselection for both isotactic ( mmmm : 59.5% โ†’ 91.0%) and syndiotactic ( rrrr : 66.3% โ†’ 81.3%) products.

https://ift.tt/330AEu0

๐Ÿ‘︎ 2
๐Ÿ“ฐ︎ r/ACIE
๐Ÿ’ฌ︎
๐Ÿ‘ค︎ u/TomisMeMyselfandI
๐Ÿ“…︎ Jul 28 2020
๐Ÿšจ︎ report

Please note that this site uses cookies to personalise content and adverts, to provide social media features, and to analyse web traffic. Click here for more information.