Week 6
Glutaraldehyde
(5 carbon) Cold chemical sterilant- steralizes surfaces without heat; Disinfectant in soaps/ detergents; Not as irritating odor as HCHO; Often used with HCHO to lessen fixative properties; Once activated, can go bad in 2 weeks, unless buffered to pH of 7
Formaldehyde (HCHO)
(Methanal, Methanaldehyde) Simplest Aldehyde; Formalin is a solution of ____________ in water; prepared by partial oxidation of methanol
Amides
organic compounds produced when organic acids react with amines
Hydroxy Acids
Citrates (react with Staph toxins to produce clotting) no longer used
Properties of HCHO
Colorless Gas; Irritating Odor; Soluable in water; Polymerizes to paraformaldehyde; Oxidizes to formic acid; Rated by index
Urea
is amide that can get into blood. It interferes with HCHO, thereby increasing HCHO demand. The HCHO is tied up with the ____, and can't get to the tissue
Acetic Acid (Ethanoic Acid)
Vinegar- end product of ethane partial oxidation process
Benzaldehyde
An aromatic aldehyde derived from benzene; Used in funeral service as a deodorant, smells like almonds
Acetaldehyde
Ethanal; An aldehyde made from partial oxidation of Ethyl Alcohol; Used to lessen fixative properties of formaldehyde
Ethane Partial Oxidation
Ethane ---> Ethanol ---> Acetaldehyde (Ethanal)---> Ethanoic (Acetic) Acid
Dicarboxylic Acids
Oxalates (toxic to embalmer) no longer used
Glyoxal
A larger aldehyde; As effective as HCHO but turns skin yellow; No longer used
Lactic Acid
Once thought to produce Rigor Mortis. Not true.
Amines
organic compounds containing nitrogen, often produced from ammonia (EX: Ptomaines known as Putrecine & Cadaverine)
Acetone
Nail polish remover; Used to remove bandage adhesive, road tar & organic stains
Formic Acid (Methanoic Acid)
end product of methane partial oxidation process: Pungent Odor; Blistering Agent
Formaldehyde Uses
Disinfectant & Preservatives. used in funeral service because it CROSSLINKS with nitrogen atoms and biochemical compounds such as proteins. It "locks them" up there by fixing the tissue
Methane Partial Oxidation
Methane ---> Methanol ---> Methanal (HCHO)---> Formic (methanoic) Acid
Esters
Perfuming agents
