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Thanatochemistry > Dyes > Flashcards

Dyes Flashcards

1
Q

When is dissolved gives color to the embalming solution?

A

Dye AKA Coloring Agent

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2
Q

What are the 2 Categories of Dyes?

A

Active Dyes/Staining Dyes

Passive Dyes/Non-Staining Dyes

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3
Q

Active Dyes/ Staining Dyes definition?

A

Dyes that impart a color pigmentation to the body and or stain the body tissue cells

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4
Q

What are the types of Active Dyes?

A

Cosmetic Fluid
Counter Staining Compound
Tracer Dyes

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5
Q

Embalming fluid that contains dyes and coloring agents that restore a more natural skin tone

A

Cosmetic Fluids aka Cosmetic Dyes

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6
Q

The dye that helps to cover internal discolorations such as jaundice

A

Counter staining compound AKA Counter staining dye

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7
Q

Why does Bilirubin convert to Biliverdin in jaundice cases?

A
  1. High formaldehyde index

2. Acidic nature of the formaldehyde

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8
Q

What are the ways to treat Jaundice Discoloration?

A
  1. Large amounts of pre injection
  2. Counter staining dyes
  3. External cosmetics
  4. Torchiere Lamps
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9
Q

Torchiere Lamps?

A

Provides indirect light that mitigates the jaundice discolorations

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10
Q

What is the primary goal in jaundice cases?

A

Preservation

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11
Q

Sclera?

A

The white portion of the eye where jaundice could be first discovered

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12
Q

What is a Tracer Dye?

A

Active dyes used as cosmetic dyes that have the added advantage of giving a visible surface indication of fluid DISTRIBUTION

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13
Q

What are the characteristics of an embalming fluid dye?

A
  1. Must stain the tisue cells
  2. Must highly diffuse and light fast
  3. It must not be altered by pathological body products
  4. It must maintain its original color under reasonable variations of arteriral fluid and tissue pH
  5. Must possess a color comparable to that of the living tissue
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14
Q

Do Inactive dyes produce a staining effect?

A

No they have no other purpose than to add color and eye appeal to the fluid

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15
Q

Active Dyes

A

Cosmetic Stains tht actually dyes the tissue cells and aids in the restoration of a normal life-like color.

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16
Q

A purplish red powder prepared from lichens by maceration in dilute ammonia and caustic soda?

A

Cudbear

17
Q

What is Carmine?

A

Is an aluminum and calcium salt of carminic acid

18
Q

A red coloring matter consisting of the dried bodies of the female insect codlus cacti

A

Cochineal

19
Q

What are Synthetic Dyes?

A

Dyes of alkali metal salts that have been reacted with coal tar compounds 90%

20
Q

What is Amaranth?

A

The member of AZO family is a suspected human carcinogen; Suspected human carcinogen

21
Q

Eosin definition of the chemical definition?

A

Tetrabromofluorescin
Is derived from bromine and is red in color
Highly concentrated; only a few drops needed

22
Q

Erythrosine Definition and Chemical equation

A

Known chemically as sodium slats of iodeosin

Brown powder

23
Q

Ponceau

A

Red non flourescent dye obtained from napthlene

24
Q

What is the AKA of Dyes?

A

Coloring Agents

25
Q

What are the three components of color?

A

Carotene - Yellow
Hemoglobin - Red
Melanin - Brown

26
Q

What are the 3 Cs of Active Dyes?

Also the 3 Natural Dyes

A

Cudbear
Carmine
Cochineal

27
Q

What color is non-passive dye?

A

Blue

28
Q

What only contains inactive dyes?

A

Preservative Cells

29
Q

Do dyes give an example of distribution or diffusion?

A

Both

30
Q

What are synthetic dyes derived from?

A

Hydrocarbons

31
Q

What is the most commonly used dye?

A

Synthetic

32
Q

Where should the embalming inject a synthetic dye?

A

From the femoral artery

33
Q

What is ponceau derived from?

A

Napthlene

34
Q

Is Ponceau active or inactive?

A

Inactive

35
Q

What is the popular and most common active dye?

A

Eosin

36
Q

What is coloring agents a blend of?

A

Dyes

Coal tar derivatives

37
Q

What are the normal pH of coloring agents?

A

7.3 - 7.4

Thanatochemistry (15 decks)

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