T.Y.B.Sc. Analytical Chemistry

1. SATISH PRADHAN
DNYANASADHANA COLLEGE- THANE-
400604
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DEPARTMENT OF CHEMISTRY
Cosmetics
by
Dr.G.R.Bhagure

2. Cosmetics (5 L)
• 2.2.1 Cosmetic Introduction & Properties (1.5 L)
• Introduction & Sensory properties of Cosmetic
• 2.2.2 Study of Cosmetics Product – Face Powder (1L)
• Composition
• Estimation of Calcium and Magnesium
• 2.2.3 Study of Cosmetics Product – Lipstick (1L)
• Composition
• Ash analysis
• 2.2.4 Study of Cosmetic Product – Deodorants and
Anti-perspirants (1.5 L)
• Constituents
• Properties
• Estimation of Chloride and Zinc
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3. Cosmetics Introduction & Sensory Properties
• Cosmetology is the study and application of beauty treatment.
Cosmetics is one of the branch of cosmetology.
• Cosmetics are the products used for the purposes of cleansing,
beautifying, promoting attractiveness or alternating one's
appearance.
• Sensory Properties Of Cosmetics
• The properties which are detected by the five sense organs.
• They are being used in many fields such as foods, cosmetics,
pharmaceuticals, textiles and household products.
• In the cosmetic industry, sensory evaluation data has been
used as a part of marketing decision. Sensory properties are
judged by sensory evaluation.
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4. Ear
Eye
NoseTongue
Skin
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5. Sensory
Properties
of
Cosmetics
Texture
Taste
OdourColour
Noise
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6. Sensory
Evolution
of Skin
products
After feel
Fragrance
Skin Feel
Spread
ability
Tackiness /
Greasiness /
stickiness
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7. Sensory
Evalution
of Hair
products
Gloss /
Shine
Bounce
Hair
CompatHairbility
Detangling
Static
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8. Functions of
Cosmetics
Decorative
To enhance beauty or to
suppress negative
aspects
Psychological
To give Psychological
soothing
e.g. dyeing of hairs
Clinical
Talcum powder: To void
irritation,
Sunscreen lotions: to
void harmful UV rays
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9. • Study of Cosmetic Products: Face Powder
• Composition of Face Powder (Kaoline, zinc
oxide, titanium oxide, starch, magnesium
carbonate, calcium carbonate, zinc stearate and
talc)
• Composition of Face Powder (Kaoline, zinc oxide,
titanium oxide, starch, magnesium carbonate,
calcium carbonate, zinc stearate and talc
• Estimation of Calcium
• Estimation of Magnesium
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Composition of
Face powder
Light Kaoline 20-
30
•For absorbency
Zinc oxide
5-30
•Good covering power
Titanium oxide
1-5
•UV reflection
Rice starch
20-50
•Imparting finish
MGCO3
5-10
•For absorbency
CaCO3
5-30
•Imparting finish
Magnesium
stearate
1-5
•Adhesiveness &
Covering property
Purified talc
50-75
•Imparting smooth
and silkiness

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Composition of
Face powder
Light Kaoline 20-30 For absorbency
Zinc oxide
5-30
Good covering power
Titanium oxide
1-5
UV reflection
Rice starch
20-50
Imparting finish
MGCO3
5-10 For absorbency
CaCO3
5-30
Imparting finish
Magnesium stearate
1-5
Adhesiveness &
Covering property
Purified talc
50-75
Imparting smooth
and silkiness

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14. • Study of Cosmetic Products:
• Lipstick
• Constituents of Lipstick (Fatty base,
dyes, pigments)
• Ash Analysis
• i) Borates,
• ii) carbonates,
• iii) water soluble salts and
• iv) water insoluble salts)
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15. Constituents
of
Lipsticks
For base
material
Hydrocarbon
Castor oil
Oleic alcohol
Butyl
stearate
Propylene
glycol
Bee wax
Polyethylene
glycol
Laoline
Cocoa butter
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16. For coloring in
lipstick
Dye
Fluorescein
Lakes and other
pigments re used for
brightening &
covering effect
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17. ASH ANALYSIS
SAMPLE PREPARATION
*Weigh bout 5 gm of Lipstick in platinum
dish , & heat it on stem bath under jet air for
1 hour.
*Remove the dish & add gm of ashless
cellulose powder. Mix with glass rod.
*Scrape the material from glass rod & add to
dish. Heat the dish under infrared heating
lamp until sample is charred.
*Complete ashing at 6000c in a muffle
furnace
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18. ASH ANALYSIS
DETERMINTION OF OF BORTES
*MIX a portion of ash with few
drops of H2SO4 in a platinum dish.
*Add 5-6 cm3 of methanol & stir
well in a darkened hood & ignite.
*A green flame indicates presence
of borates
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19. ASH ANALYSIS
DETERMINTION OF CARBONATES
*MIX a portion of ash with few drops
of HCl in a platinum dish.
*An odorless effervesces indicates
presence of Carbonates.
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20. ASH ANALYSIS
DETERMINTION OF WATER SOLUBLE SALTS
*Dissolve the reminder of ash in water
in a platinum dish.
*Filter off any insoluble material .
* Test the aliquots of filtrate for
chlorides with AgNO3 &
* for sulphates with BaCl2 &
* for phosphates with ammonium
molybdate
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21. ASH ANALYSIS
DETERMINTION OF ZINC OXIDE
*Ignite the ash in a platinum dish.
*The presence of yellow color
indicates possible presence of zinc
oxide
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22. • Study of Cosmetic Products:
• Deodorants & Anti-perspirants
• Constituents & Properties
•Estimation of Zinc
•Estimation of Chloride
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23. PROPERTIES OF DEODORANTS
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They do not arrest perspiration
Their action depends upon antiseptic or
bactericidal effect
They need not necessarily have
antiperspirant effect
The possibility of skin damage is very
less
Substance having antiseptic or
bactericidal action used in deodorant

24. Constituents
of
Deodorants
Purified
water
Guar Gum
Vegetable
Glycerin
Patchouli
Sandalwood
essential oil
Lavender
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Constituents
of
Deodorants
Purified water To absorb CO2
Guar Gum Moisturizing quality
Vegetable Glycerin Moisturizing quality
Patchouli
good for skin
fixative for
perfume blend
Sandalwood
essential oil
Perfumery
,cosmetics,
aromatherapy
Lavender Moisturizing to skin

26. PROPERTIES OF ANTI-PERSPIRANTS
• Astringents in the product reduces sweet secretion
• Their action depends on coagulation effect on skin proteins
• Most of them act as deodorants
• They some time cause skin irritation and rash
• aluminum salt are used mainly Al-cholohydte good astringent
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27. •To plug up sweat ducts to temporarily stop the flow of
moistureAluminum
•It act as a preservative which keeps cosmetic products free
from bacteriaParbens
•Perfumes re usedFragrance
•MoisturizersEmollient Oil
•as solvent to dissolve aluminum compound and other active
ingredientsAlcohol
•Emulsifying agentPolyethylene glycol
•To slow down the deterioration of ANTI-PERSPIRANTSButylated hydroxy toluene
•To absorb moisture and oilTalcum powder
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CONSTITUENTS OF ANTI-PERSPIRANTS

28. ESTIMATION OF ZINC
*Take Suitable aliquot of sample containing 20-50 mg in 100 cm3 of
beaker.
*Make it slightly acidic.
*Add 1 gm ammonium tartarate + 2 cm3 of 8-hydroxyuinoline.
*Dilute to 200 cm3 & het to 60-80oc.
*Neutralize excess of cid by slow adding NaOH till ZINC complexes .
*Add 15 cm3 of ammonium acetate , let the mixture acquire room
temp.
*Adjust pH 5.7-5.9. Decent through weighed gouch crucible .
*Wash the ppt with hot water.
*Dry the ppt. for 2 hours at 130-1400C
Weight of ZINC = Weight of ppt. x 0.1712
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29. ESTIMATION OF CHLORIDE
Pipette out suitable aliquot of sample containing 100 mg of chloride into 250 cm3 of
beaker.
Dilute it to 150 cm3 with distilled water.
Neutralize it with 1:1 NH4OH .
Acidify with 1:1 HNO3 till clear solution is obtained .(Its is added to prevent precipitate of
phosphates & carbonates)
Add 0.1 N AgNO3 solution drop wise with constant stirring till excess of AgNO3 is
present. Het to 90-950C .
Let the precipitate stand in dark for 1-2 hours. Filter the ppt. through previously weighed
Gooch Crucible .
Wash the ppt. with 0.1N HNO3 till the ppt. is from Ag+ ion.
Dry the ppt. in Oven, Cool & weigh.
Calculate the amount of chloride by using following formula
amount of chloride = Weight of Ppt. X 0.2474
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1
• Pipette out suitable aliquot of sample containing 100 mg of chloride into 250 cm3 of
beaker.
2
• Dilute it to 150 cm3 with distilled water.
3
• Neutralize it with 1:1 NH4OH .
4
• Acidify with 1:1 HNO3 till clear solution is obtained .(Its is added to prevent
precipitate of phosphates & carbonates)
5
• Add 0.1 N AgNO3 solution drop wise with constant stirring till excess of AgNO3 is
present. Het to 90-950C .
6
• Let the precipitate stand in dark for 1-2 hours. Filter the ppt. through previously
weighed Gooch Crucible .
7
• Wash the ppt. with 0.1N HNO3 till the ppt. is from Ag+ ion.
8
• Dry the ppt. in Oven, Cool & weigh.
9
• Calculate the amount of chloride by using following formula
• Weight of chloride = Weight of Ppt. X 0.2474

31. Estimation of Chloride
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