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Table 2 The main physico-chemical characteristics of heterogeneously polyethoxylated (n=3, 6, 9, 12, 18) nonylphenols (NF), purified of water, polyethyleneglycols, free nonylphenol

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) Molecular weight (M) Content of ethylene oxide (%) Hydroxyl number [mg KOH/g heterogeneous polyoxyethylene (PEO) chain monoderivatized NF] Purity1) (%)
  Determined Calculated Determined Calculated Determined Calculated
1 2.99 3 352 37.41 37.50 158.69 159.09 99.75
2 5.99 6 484 54.43 54.54 115.47 115.70 99.80
3 8.96 9 616 64.01 64.29 90.52 90.91 99.57
4 11.96 12 748 70.36 70.59 74.63 74.87 99.68
5 17.95 18 1012 78.05 78.26 55.19 55.34 99.73
  1. Legend: 1) weighted average value reported simultaneously to the content of ethylene oxide and the hydroxyl number.