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Table 4 The main physico-chemical characteristics of β-nonylphenoxy (NF) polyethyleneoxy (n=3, 6, 9, 12, 16, 20) propionic acids [NF(EO) n -PC)]

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 (n) Content of ethylene oxide (%) Acid number (mg KOH/g product) Purity (%)
Determined*) Calculated Determined Calculated Determined**)
1 3 30,84 31,13 132,08 132,08 99,08
2 6 47,16 47,48 100,04 100,72 99,33
3 9 57,09 57,56 80,73 81,39 99,19
4 12 64,05 64,39 67,93 68,29 99,47
5 16 70,92 70,37 55,14 55,98 99,36
6 20 73,99 74,81 47,82 47,60 99,28
  1. Legend: *) cleavage with hydriodic acid (d = 1.7-1.9); **) weighted average value reported simultaneously to the determined content of ethylene oxide and nitrogen.