Caustic

... There's not so much chitosan in crab shell as chitin. to convert to chitosan, you'll need to deacetylate the chitin. You'd do this by heating in caustic (aq. NaOH). Washed rsidue (chityosan) can then be dissolved in aqueous mineral or organic acid. These are a hazardous steps (esp.with caustic) ...

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... a resistance to. Anything that has a gross effect is immune to resistance. For example : bacteria cannot evolve resistance to bleaches or to caustic materials since these chemically disintegrate the cell membrane. Nothing subtle there to get around. Things like antibiotics can be different, ...

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... Alkaline Products with Highly Acidic Products Acids and bases (alkalis) can react violently, presenting a splash hazard. Acids and bases are caustic and may cause chemical burns. 3,Certain Disinfectants with Detegents Don't mix disinfectants with 'quaternary ammonia' listed as an ingedient ...

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... and burns on your skin. 3.0 Red harvester ant: Bold and unrelenting. Somebody is using a drill to excavate your ingrown toenail. 3.0 Paper wasp: Caustic & burning. Distinctly bitter aftertaste. Like spilling a beaker of hydrochloric acid on a paper cut. 4.0 Pepsis wasp: Blinding, fierce, ...

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... emergency. Diagnosed with Blepharitis, Keratitis and at the time droopy eyelid syndrome. Caused by my sleeping with my eyes open or some caustic substance that I must have administered in error. Eye specialists at Moorfields can not see it. I went to quite a well known Dermatologist on ...

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