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Caustic

Caustic

(Science: chemistry) An escharotic or corrosive agent.

Synonym: cauterant.

Origin: L. Causticus, gr. Kaustikos


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Chitosan Extraction

... 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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by JorgeLobo
Sat Mar 31, 2012 3:46 pm
 
Forum: Zoology Discussion
Topic: Chitosan Extraction
Replies: 1
Views: 1495

Re: Developing resistance to detergent

... 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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by skeptic
Sun May 29, 2011 4:28 am
 
Forum: Microbiology
Topic: Developing resistance to detergent
Replies: 2
Views: 2164

Common Household Chemicals - Dangerous Mixtures

... 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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by sunnye
Thu Jul 24, 2008 1:57 am
 
Forum: General Discussion
Topic: Common Household Chemicals - Dangerous Mixtures
Replies: 1
Views: 4364

pain scale for stings

... 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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by mith
Wed Apr 16, 2008 7:38 am
 
Forum: Zoology Discussion
Topic: pain scale for stings
Replies: 4
Views: 5707

The Fiber Disease

... 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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by hartuk
Fri Jul 21, 2006 6:57 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5014175
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