Encapsulation of Nicardipine Hydrochloride and Release

The Span 80 (HLB = 4 3) and Span 85 (HLB = 1 8) structures contain 1 and 3 fatty acid groups respectively The HLB value decreases with increasing fatty acid content Thus surfactants with HLB 7 tend to form w/o emulsions Moreover Tween 80 (HLB = 15 0) and PVA (HLB = 18 0) are hydrophilic in nature Their advantage with HLBs 7 0 is their ability to support the formation of o/w

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Werkgroep 1 vragen en uitwerkingen

Tween 80 HLB = 15 Span 85 HLB = 1 % Tween 80: = = 0 % Span 85: undefined = 0 Hoeveelheid Tween 80: Hoeveelheid Span 85: Recept 12 Adeps lanae 8 g HLB = 8 Vaseline 16 g HLB = 4 Paraffine 8 g HLB = 4 Tween qs Span qs Aqua ad 50 g Fac w/o creme Totale hoeveelheid vet: 8 g + 16 g + 8 g = 32 g Adeps lanae: 8/32 x 8 = 2 Vaseline:16/32 x 4 = 2 Paraffine: 8/32 x = 1 Benodigde HLB-waarde

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Formulation Characterization and Properties of Hemp Seed

Tween 85/Span 85 ratios in the emulsions were 1 30 (HLB 7) 2 07 (HLB 8) and 3 60 (HLB 9) As can be seen the diameters of the particles present in all emulsions prepared by the high-energy method were significantly smaller ( p ≤ 0 001) regardless of HLB values than the emulsions produced by the low-energy EIP (emulsion inversion point) method

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Span Tween [mwl1xw7pm1nj]

Span and Tween Sorbitan esters and their ethoxylates Croda's unique expertise in ester technology and continuing commitment to customers has established the company as a world-leader in the supply of sorbitan esters and derivatives for an array of applications A unique understanding of the highly complex properties and functions of sorbitan esters has been developed to ensure customer

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Polisorbato

HLB: 16 7 15 6 14 9 10 5 15 0 LD 50: 38 4 g/kg (oral Rata) [2] El nmero 20 despus de la parte de polioxietileno se refiere al nmero total de grupos oxietileno - (CH 2 CH 2 O) - encontrados en la molcula El nmero que sigue a la parte polisorbato est relacionado con el tipo de cido graso asociado con la parte de sorbitano de polioxietileno de la molcula por esterificacin

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HLB value of 10 Answer Let the proportion of Polysorbate

HLB value of 10) • Answer: Let the proportion of Polysorbate 85 is x So the proportion of Span 85 must be 1-x • we know HLB mix = xHLB a + (1-x)HLB b • 10 = x (11 0) + (1-x)(1 8) So x = 0 89 • Here the proportion of Polysorbate 85 = 0 89 and the proportion of Span 85 = (1-0 89)= 0 11

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PENENTUAN NILAI HLB BUTUH MINYAK DENGAN JARAK HLB

18 08 2011HLB butuh minyak ini perlu ditentukan apabila emulsi menggunakan kombinasi surfaktan jika hanya menggunakan satu jenis surfaktan tidak diperlukan nilai HLB butuh minyak HLB butuh minyak harus berada di rentang nilai HLB kombinasi surfaktan Pada prakktikum ini digunakan surfaktan tween 80 dengan nilai HLB 15 dan span

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Low Hlb Versatile Surfactant Oil Solubility Sorbitan

Low Hlb Versatile Surfactant Oil Solubility Sorbitan Trioleate(sto) Span 85 Find Complete Details about Low Hlb Versatile Surfactant Oil Solubility Sorbitan Trioleate(sto) Span 85 Oil Solubility Surfactant Span 65 from Ester Derivatives Supplier or Manufacturer-Guangdong Runhua Chemistry Co Ltd

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Neues Rezeptur

Sorbitantrioleat (Span 85) (7) – Eignung unsicher wegen des sehr geringen HLB-Wertes Das „Retten" von verunglckten Rezepturen (3) gilt zwar zu Recht als verpnt hat man jedoch eine schlecht emulgierende Wollwachsalkoholsalbe im Gebrauch ist es sinnvoll einen stabilisierenden Zusatz von vorn herein vorzusehen 3 Alternativen fr Wollwachsprodukte enthaltende Dermatika Heute gilt

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SPAN 85 von Croda Home Care

Span 85 is a biodegradable surfactant based on a natural fatty acid (oleic acid) and the sugar alcohol sorbitol This sorbitan ester is highly effective at forming O/W emulsions particularly when used in combination with its polyethoxylated derivative Tween 80 Lieferant Croda is a world leader in providing natural specialty ingredients for Industrial/Institutional and non-wovens

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Electronic Supplementary Information A Robust Oil

Four types of commonly used polymeric surfactants with hydroxyl functional groups Brij 93 (HLB 4) Span 80 (HLB 4 3) Span 85 (HLB 1 8) and Tween 20 (HLB 16 7) were evaluated However none of them formed stable emulsion droplets under various agitation methods including ultra-sonication homogenization and high-speed stirring Hydrophobically functionalized clays are widely used as

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HLB vrijednost

Uzmimo za primjer polisorbat 60 s HLB vrijednosti 14 9 i Span 60 HLB 4 7 Stoga trebamo postići onaj omjer ova dva emulgatora koji ima HLB vrijednost od 6 5 Formula će biti sljedeća: (udio polisorbata 60) x 14 9 + (udio spana 60) x 4 7 = 6 5 (udio spana 60) = 1 – (udio polisorbata 60) jednostavnim uvrštavanjem u jednadžbu dobivamo: (udio polisorbata 60) x 14 9 + (1 – (udio

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BAB II TINJAUAN PUSTAKA 2 1 Emulsi

Nama IUPAC Nama Komersial Formasi Fisik (25C) HLB (+1) Sorbitan monolaurate Span 20 Cair 8 6 Sorbitan monopalmitate Span 40 Padat 6 7 Sorbitan monostearate Span 60 Cair 4 7 Sorbitan monooleate Span 80 Padat 4 3 Sorbitan tristearate Span 65 Cair 2 1 Sorbitan trioleate Span 85 Padat 1 8

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Span 85 non ionic

HLB 1 8 SMILES string CCCCCCCCC=C/CCCCCCCC (=O) OC[CH](O)C1OC[CH](OC(= O)CCCCCCCC=C Sorbitane trioleate or Span 85 has been used in a study to develop a novel bottom-up process to produce nanoparticles containing protein and peptide for suspension in hydrofluoroalkane propellants It has also been used in a study to analyze the application of liquid

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PRCTICAS DE TECNOLOGA FARMACUTICA I

ml de Tween 60 14 9 + ml de Span 85 1 8 = 1 Z Z = HLB de la mezcla 6 El HLB resultante de la mezcla ms estable de la serie coincidira con el HLB requerido para emulsionar la parafina lquida PREPARACIN DE LA EMULSIN Preparar 25 g de emulsin constituida por: Parafina lquida ----- 35 g Emulsificante ----- 10 g H 2 O c s p ----- 100 g Calentar al bao mara los

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Determination of Hydrophilic

HLB Value Span 85 Sorbitan trioleate Nonioni c 1 8 Atlas G-1706 Polyoxyethylene sorbitol beeswax derivative Nonioni c 2 Emcol PO-50 Propylene glycol fatty acid ester Nonioni c 3 4 Span 60 Sorbitan monostearate Nonioni c 4 7 Span 40 Sorbitan monopalmitate Nonioni c 6 7 Atlas G-2800 Polyoxypropylene mannitol dioleate Nonioni c 8 Span 20 Sorbitan Monolaurate Nonioni c 8 6 Brij 30

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Brief Effect of a Small Hydrophobic Drug (Cinnarizine) on

(Span 80) has an HLB value of 4 3 and sorbitan trioleate (Span 85) has an HLB value of 1 8 Their gel transition temperature increases as the length of the acyl chain increases resulting in decreased leakage of drugs from niosomes [12] All Spans have the same head group and different alkyl chain length [13] As the alkyl chain length increases the entrapment efficiency of hydrophobic

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Molecules

Tween 85/Span 85 ratios in the emulsions were 1 30 (HLB 7) 2 07 (HLB 8) and 3 60 (HLB 9) Figure 1 Effect of oil type (refined vs unrefined) hydrophilic lipophilic balance (HLB) and surfactant concentration on the particle size of emulsions prepared by ( a ) high-energy method and ( b ) low-energy method

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