Flashcards Embalming Chemistry Quiz 7

Carboxylic Group

Posses at least one -COOH group, sometimes more

•They are true acids because they dissociate in water forming a conjugate base and a

hydronium ion (A hydronium ion is a positively charged ion (a cation) with the chemical

formula 3 +. Hydronium ions are crucial in aqueous solutions for determining a𝐻 𝑂

solution's acidity; a higher concentration of hydronium ions indicates a lower pH value,

meaning the solution is more acidic)

weak acids

the only acidic hydrogen is the one

attached to the oxygen atom

Naming Carboxylic Acids

Named as derivatives of alkanes

•Also known by common names associated with their source of isolatio

Organic acids are sometimes referred to as _______ because they naturally occur in fats

fatty acids

Salts of Carboxylic Acids

In the presence of a strong base, such as sodium hydroxide, carboxylic acids are completely neutralized

Salts of Carboxylic Acids are named by

naming the metal followed by changing the -ic acid of the

carboxylic acid to -ate

Famous Sodium Carboxylates

- acts as corrosion inhibitors, anticoagulants,

and water conditioners, sodium formate, sodium acetate, sodium benzoate

(Sodium Formate)

Food additive/preservative

(Sodium acetate)

Seasoning added to potato chips

(Sodium benzoate)

Preservative in salad dressings, carbonated drinks, relish, and pickles. Also used as a preservative in medicine and cosmetics

Poly carboxylic acids contain

two or more carboxylic groups

The simplest dicarboxylic acid is

oxalic acid

dicarboxylic acid is used as a

anticoagulant and water softner

Oxalic acids can be converted into a ____ (sodium oxalate) salt by adding a strong base

disodium

was the first water softener and anticoagulant used in the

funeral service industr

disodium salt

When soluble sodium oxalate is the modifying agent in your embalming fluid,_________ out of solution when added to hard wat

calcium oxalate precipitates

Acetic acid (commonly known as vinegar)

reacts with hard water deposits like calcium ion creating the water soluble compound calcium acetae

Tricarboxylic acids

used as sequestrant anticoagulants

(sequester: to hold) prevent blood from clotting by binding to

and removing calcium ions from the blood

Potassium citrate

does not remove Ca+2 ions, cages (sequesters) them in and prevents them from coagulating and clotting

blood during embalming procedur

EDTA (Ethylenediaminetetraacetat)

used as buffer, Colorless, water soluble, polycarboxylic acid, Chelating Sequesterant anticoagulant

chelating agent

a chemical compound that binds tightly to metal ions, forming a ring-

like structure called chelate

Esters

•Formed by reaction of a carboxylic acid with an alcohol, ex triglycerides, trigger pheremones response in some animals and insects

Methyl Salicylate

•This is the star fragrance for the embalmer- used as a deodorant in embalming

Ester group creates a

wintergreen scent

thioesters

First cousin to the ester, bad odor, No role in embalming fluid but very important biologically

•Acetyl Coenzyme-A (or acetyl-CoA) is an important thioester in metabolis