Alliance Chemical / Resource Library
Technical chemical guides, safety references, product comparisons and industry insights from the Alliance Chemical team.
282 articles · updated August 2026
Ignaz Semmelweis (1818–1865) was the Hungarian obstetrician who introduced antiseptic handwashing in 1847 at the Vienna General Hospital, requiring doctors to scrub in chlorinated lime solution between autopsies and deliveries. Average monthly maternal mortality in his clinic fell from 10.65%...
Read articleEthylene glycol (C₂H₆O₂, CAS 107-21-1, also called MEG or 1,2-ethanediol) is a colorless, odorless, sweet-tasting liquid best known as the working ingredient in engine antifreeze and...
Yes, bleach expires. Bleach is sodium hypochlorite (NaOCl, CAS 7681-52-9) dissolved in water, and it decomposes continuously from the day it is made - mainly into...
Ammonia (NH3, CAS 7664-41-7) takes its name from sal ammoniac, the historical name for ammonium chloride, which Pliny the Elder recorded as hammoniacus sal in Natural...
Isopropyl alcohol (IPA, propan-2-ol, C3H8O, CAS 67-63-0) is made from propylene, a byproduct gas of petroleum cracking. In the indirect (strong-acid) process, propylene is absorbed into...
Chlorine was discovered in 1774 by Carl Wilhelm Scheele, a Swedish apothecary who heated the mineral pyrolusite (manganese dioxide) with muriatic acid (hydrochloric acid) and collected...
Potassium hydroxide (KOH, CAS 1310-58-3) is sold in the United States through industrial chemical distributors, laboratory suppliers and online chemical retailers. Order Technical Grade where the...
Potassium hydroxide (KOH, CAS 1310-58-3) is a strong inorganic base, also called caustic potash or potash lye, sold as white flakes, pellets, powder or solution. It...
Phosphorus was discovered in 1669 by Hennig Brand, a merchant and amateur alchemist in Hamburg, who boiled down large quantities of human urine while searching for...
Bleach does not remove a stain. It destroys the stain's ability to absorb light. That single distinction explains almost everything people get wrong about sodium hypochlorite...
Nitric acid (HNO₃, CAS 7697-37-2) can be bought in the United States without any federal purchase licence — it is not a DEA-listed chemical. What gates...
Phosphoric acid (H3PO4, CAS 7664-38-2) is a mineral acid made from mined phosphate rock and used in food in two distinct ways: directly as an acidulant...
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