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Table 1 Reference physico-chemical parameters for the colloidal behavior of β-nonylphenoxy (NF) polyethyleneoxy (n=3, 6, 9, 12, 16, 20) propionic acids

From: Synthesis of nonionic-anionic colloidal systems based on alkaline and ammonium β-nonylphenol polyethyleneoxy (n = 3-20) propionates/dodecylbenzenesulfonates with prospects for food hygiene

No. Average oligomerization degree of ethylene oxide (n) Number of carbon atoms (N) Average content of ethylene oxide (%EO) HLB index (GRIFFIN) HLB = % E O 5 Solubility in aqueous medium1) % E O N
1 3 24 31,13 6,226 1,297
2 6 30 47,48 9,49 1,582
3 9 36 57,56 11,51 1,598
4 12 42 64,39 12,88 1,533
5 16 50 70,68 14,14 1,413
6 20 58 75,58 15,02 1,294
  1. Legend: 1) Betweeen 0.5-1.5 soluble within certain limits; above 1.5 higly soluble [32, 33].