5 votes

Do drugs with the same chemical formula work identically?

Many drugs come in more than one form -- or formulation, I should say. For example, it's common for a drug to come in an oral formulation and an injectable formulation: same chemical, different ...
Carey Gregory's user avatar
  • 9,862
5 votes
Accepted

Can I make a Hand sanitiser with Reagent Grade Ethanol 99.8% v/v?

All the alcohol based sanitizers are using ethanol as the main alcohol often with isopropylalcohol. The latter is more effective against bacteria and ethanol is better against virus The ...
Graham Chiu's user avatar
  • 13.3k
4 votes
Accepted

Is cannabidiol (CBD) really an oil?

Oil is: any nonpolar chemical substance that is a viscous liquid at ambient temperatures and is both hydrophobic (does not mix with water, literally "water fearing") and lipophilic (mixes with ...
Chris Rogers's user avatar
  • 6,185
3 votes

Is the ability to smell a VOC a good measure for whether a respirator is effective or not?

We breath in volatile organic compounds (VOCs) without realizing it all the time. Not all of them are equally harmful, and many are downright wonderful to the psyche. My favorite gardening chore is ...
anongoodnurse's user avatar
3 votes

How does robb(balm) relieve pain?

I found the following list of ingredients for Robb balm on-line (if the product you are using is different please correct me): CAMPHOR 11.0% MENTHOL 5.5% OL EUCALYP 1.0% OLPINIPUMIL 0.5% METHYLSAL 4....
Lucky's user avatar
  • 2,833
2 votes

Not in the face? Why is this warning on my lotion?

Interesting question. I remember my professor of pharmaceutical technology and pharmaceutics addressing this when we discussed the significance of dosage form design. The skin on one’s face is far ...
user50398's user avatar
2 votes

BPA in reciepts (cashier)

Short answer, no one knows. By now tests have found the chemical in more than 90% of Americans. But the risks of BPA contamination are still in dispute. One reason: Studies have produced ...
Graham Chiu's user avatar
  • 13.3k
2 votes

Do drugs with the same chemical formula work identically?

In addition to Carey's excellent answer, many drugs also exhibit polymorphism, the ability to form different crystal structures (think coal, graphite, and diamond, which are all different crystal ...
BillDOe's user avatar
  • 1,400
2 votes
Accepted

Isolating blood vessels and vasculature of the heart?

Yes, this can basically be accomplished via plastination, whereby they replace the normal water in tissue with a form of silicone. You can use it on virtually any kind of tissue; first time I walked ...
Gregorio Litenstein's user avatar
2 votes

Can I make a Hand sanitiser with Reagent Grade Ethanol 99.8% v/v?

Yes you can. You are safe if you use 65% ethanol mixed with 35% water or glycerine. That is what is known/sold as disinfectant hand sanitizer for viruses.
iep's user avatar
  • 123
1 vote

How dangerous is it to microwave melamine?

FDA data https://www.fda.gov/food/resourcesforyou/consumers/ucm199525.htm suggests there is increased migration of melamine into food at temps above 160'F but seems to take time to accumulate. The ...
DoctorWhom's user avatar
  • 5,814
1 vote

Use of fire retardants in fabric

Adding flame and fire retardends to clothing garments is possible, but it is not standard in the clothing industry. Those chemicals are usually reserved for specialty application, like race driving ...
LаngLаngС's user avatar
  • 6,897
1 vote

Should I be worried about glyphosate exposure?

Glyphosphate is an organophosphate compound that is used a herbicide - it is generally aimed at inhibiting enzyme synthesis in plants. Generally, on oral intake from raw produce can produce toxicity, ...
Thomas's user avatar
  • 1,161

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