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Samenvatting overzicht wetten & wassen
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per vet/was worden structuur, gebruik, eigenschappen & info uit de farmacopee gegeven
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OVERZICHT VETTEN & WASSENVET/WAS GEBRUIK + EIG EXTRA
Paraffine & Vaseline P= mengsel van CH-s VAST: uit licht neutraal
bekomen uit distillatie v petroleum =aardolie in gesteenten distillaat +
bestaat uit (cyclo)alkanen + aromatische CH’s (soms halogenen) uitkristalliseren, vnml
Keten: alkaan -> hoeveelheid bepaald vast/vloeibaar/halfvast alkanen
Vaseline= halfvaste paraffine VLOEIBAAR: licht neutraal
bereid uit distillatieresten v vacuümdistillatie vrij v asfalt, bestaat distillaat +
bestaat uit rechtlijnige/vertakte alkanen deel in opl-deels in zwavelzuurbehandeling,
naftenen vnml cycloalkanen
gn kristallen door hoge viscositeit
witte vaseline: zalfbasis, gebleekt
neemt weing water op dus gemengd met emulgerende stoffen (vb
lanoline)
Gebruik: zalfbasis, oplosmiddel, laxeermiddel (vloeibare vorm)
Bijenwas Geproduceerd door bij om honingraten te maken
Wit -> geel door contact met stuifmeel enz.
Bestaat uit ester v vetzuren (C12-14) met vetalcoholen met lange
ketens (C24-32)
Gebruik: lippenzalf/stift, kaarsen, tabletomhulsel
Cetylpalmitaat Uit potvis (spermaceti-orgaan in schedel)
In zalven, crémes, olielampen, kaarsen
Bestaat uit mengsel v esters (C15-18) alcoholen met carbonzuren
Wolvet (=lanoline) Was geproduceerd door zweetklieren v schapen EUCERINE= gezuiverd lanoline
Mengsel v wol/vetalcoholen en vetzuren met hoog cholesterolgehalte
Kan water opnemen > W/O-emulgator
I zalven, crémes, cosmetica, zepen, vette wondgazen
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