What do the different grades of chemicals mean?
In general, technical grade or laboratory grade are the lowest purity. ACS Reagent grade means that the chemical conforms to specifications defined by the Committee on Analytical Reagents …
Difference between lab-grade and food-grade purity?
Lab Grade is different than Food Grade, yes. Normally Food Grade is a LOWER quality than Lab Grade. Lab Grade normally has exhaustive testing on it to determine all impurities. The lab is …
How pure NaCl is typical table salt? How is it purified?
2015年2月9日 · This is the same purity as pharmaceutical-grade salt, except that pharm. grade also requires a moisture content of 0.01% or less. For export markets, British Salt can then …
What are the "ozonated magnesium oxides" used in this product?
2022年8月20日 · A claim by the manufacturer "he knockoffs of Homozon don't use the special pharmaceutical grade magnesium, and they only bond oxygen, not ozone, to the magnesium. …
What kind of materials are plastic syringes made from?
2017年1月8日 · To develop the necessary data as outlined above, a collaborative approach is recommended between the pharmaceutical company that holds the marketing authorization of …
What is the difference between doxycycline HCl and doxycycline …
These are salts with the (protonated) pharmaceutical as the cation and chloride as the anion. Salts are water soluble. Here, the notation for this is doxycycline$\ce{.HCl}$. The …
What are the maximum number of electrons in each shell?
2014年2月20日 · The pattern of maximum possible electrons = $2n^2$ is correct. Also, note that Brian's answer is good and takes a different approach.
polarity - How can I tell if a molecule is polar or not? - Chemistry ...
2015年7月16日 · Every sufficiently asymmetric molecule will be polar, but some more than others. The polarity of molecules is related to the polarity of bonds within the molecule, but just having …
Overlap between computer science and chemistry?
2015年10月27日 · National laboratories and universities do a significant amount of computational chemistry work, less so in industry R&D (caused by, among other reasons, lack of access to …
Synthesis of anthranilic acid - Chemistry Stack Exchange
2019年5月8日 · Yesterday, I performed the synthesis of anthranilic acid (also known as, 2-aminobenzoic acid. I was instructed to use the common route that is also featured on the …