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6 Cards in this Set
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Front (Term) |
Colour Course=6letters milky w=6letters Collodial =9 letters blue white=9 and transparent Molecular=transparent Size 1) Molecular=less than 1nm 2)collodial 1nm to 0.5 micrometers 3)coarse =greater than 1micrometer Em lm 1)molecular=visible under em 2)collodial =visible under em but not lm 3)coarse =visible under lm Diffusion 1) molecular=diffuse rapidly ends with r Collodial =diffuse slowly has 3l Coarse=no diffusion Used as = Molecular goi Collodial=natsynth polymers m Coarse=suspension and emulsion
Colour and size of em and im Diffusion and used as |
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Calculate total rhlb for the emulsion |
Oils Beeswax Lanollin Paraffin Cetyl alcohol Total amount 15+10+20+5=50 Amount of each oil in emulsion x rhlb= Amount of oil in g/total of oil in g x rhlb of the oil Beeswax=15/50x9=2.70 Lanollin=10/50x12=2.40 Paraffin 20/50 x10=4 Cetyl alcohol 5/50 x15=1.5 Total rhlb for the emulsion =2.70+2.40 +4+1.5=10.60 |
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Front (Term) |
Find amount of tween 80 and span 80=emulsifiers Total amount of emulsifiers=5g Find how much of each Equation: HLB mixture(rhlb)=tween hlbx +span hlb(1-x) 10.5=15x+4.3(1-x) Find x Expand brackets 10.5=15x+4.3-4.3x -4.3 6.2=15x-4.3x 6.2=10.7x X=6.2/10.7=0.58 Amount of tween 80 in 5g 0.58x5=2.9 Amount of span= 5-2.9=2.1g
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