Embalming Chemistry

65 terms by vampster2010

Create a new folder

Advertisement Upgrade to remove ads

chapter 14 embalming chemistry

most commonly used solvent for arterial fluids and cavity fluids

water

Hydrogen Hydroxide

Water

vehicle for embalming solutions

water

universal solvent for primary and secondary dilutions of embalming fluids

water

embalming chemistry

the study of the chemical post-mortem changes, the composition of embalming fluids, and the interaction between each

disinfection, preservation, and restoration of a dead human body

embalming process

disinfection

the killing or removal of all pathogenic organisms from a substances

temporary halting of the natural decomposition processes which occur in a body after death

preservation

killing or removal of all pathogenic organisms from a substance

disinfection

preservation

temporary halting of the natural decomposition processes which occur in a body after death

dual purpose agents

chemical agents which can both disinfect and preserve at teh same time

three families of disinfectant/preservative agents used in the manufacture of embalming fluids

aldehyde, alcohol, phenolic compounds

aldehyde compounds

formaldehyde and gluteraldehyde are two of the most common used

formaldehyde and gluteraldehyde

aldehyde compounds

alcohol compounds

3 that can be used in embalming fluids: methanol, ethanol, and secondary propanol

methanol

wood alcohol

ethanol

grain alcohol

secondary propanol

isopropyl alcohol or rubbing alcohol

phenolic compounds

(coal tar derivatives) most commonly used are phenol and cresol and lysol

phenol

carbolic acid

first action of the three families of dual purpose agents

Neutralize unstable chemical ions created created by the deamination and decarboxylization of protein and amino acids during hydrolytic autolysis

preservative demand

formaldehyde demand

formaldehyde demand

must be met in order to preserve the body

number of ions present in the dead human body at the time of embalming

formaldehyde demand

longer amount of time between death and embalming

higher formaldehyde demand

preservative residual

number of molecules of a preservative injected into the body in excess of the formaldehyde demand

purpose of injecting preservative residual

ensure that some preservative will be available if any further unexpected decomposition occurs in the body after injection fur to the pressence of copious amounts of water left behind to re-initiate hydrolytic decomposition of the protein of amino acid

number of molecules of a preservative injected into the body in excess of the preservative demand

preservative residual

higher formaldehyde demand

longer time between death and embalming

1 common action between the 3 families of dual purpose agents

inhibit the further decomposition of the body by creating a protein coagulate which is resistant to hydrolysis

preservative agents

slow down or delay the decomp for an extended period of time

presence of excessive amount of water around the protein coagulate

may dislodge the preservative from the amino acid and allow the peptide bond to be reestablished

what may dislodge the preservative from the amino acid and allow the peptide bond to be reestablished

excessive amounts of water in or around the protein coagulate

1 common action between the 3 families of dual purpose agents

inactivate the enzymes which are present in the body at the time of embalming

1 common action between the 3 famiies of dual purpose agents

kill microorganisms which are present in the body at the time of embalming

1 common action between the 3 families of dual purpose agents

destrow teh odors of decomp and prevent their further production

odor of decomp

atomized particles of the decomposing body

most often used type of preservative in embalming fluids

aldehyde family

aldehyde family

most often used type of preservative in embalming fluid

methanal

formaldehyde

most often used aldehyde

formaldehyde

colourless, water-soluble gas with a pungent, irritating odor

formaldehyde

formaldehyde is:

colourless
water-soluble gas
pungent, irritating odour

how is formaldehyde gas created

oxidation of methanol

saturated aqueous solution of formaldehyde

37% formaldehyde by weight and 40% by volume

37% formaldehyde by weight and 40% formaldehyde by volume

saturated aqeous solution of formaldehyde

Methylene glycol

formaldehyde gas molecules and water molecules combine

formaldehydegas gas molecules and water molecules combine to form

methylene glycol

unstable compounds

methylene glycol

methylene glycol molecules can return to formaldehyde and water by exposure to:

air, light, heat, and/or cold

methylene glycol polymerize into

paraformaldehyde

paraformaldehyde

solid(powder) state of formaldehyde

shaking the bottle of fluid does not return the paraformaldehyde particulates into

methylene glycol

what prevents the polymerization of methylene glycol

methyl alcohol

anti-polymerization agen in embalming fluids

methyl alcohol

formaldehyde substances have an affinity for

nitrogen based substances

lipid substances of the body

do not contain nitrogen

formaldehyde can not

embalm lipids

lipids are encased in

fibers of protein which contain nitrogen

proteins and amino acids contain

nitrogen which can be embalmed

fat is

indirectly embalmed

shell embalming

embalming fluids are allowed to follow the path of least resistance ad embalm only those tissues which are open to easy penetration

effect of shell embalming

hard on the outside and soft on the inside

superficial tissues are over embalmed or chemically seared and the deep tissues are not exposed to enough formaldehyde to cause any reasonable amount of fixation

shell embalming

avoiding shell embalming

use a low rate of flow and pressure and use a combination of continuous injection accompanied by intermittent drainage procedures

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set