Sodium octoxynol sulfate
time:2013-06-03 02:18:39,count:0
Synthesis
Currently, sulfated reaction through continuous reactor (such as: falling film reactor) is the most widely used method for preparing sulfates.
Polyoxyethylene octyl phenyl ether and sulfur trioxide react through reactor, then sodium hydroxide neutralizes, finally obtain product.
US patent 8,921,588 (Process for preparing sulfates and/or sulfonates in a micro-reaction system) presents a synthetic process. Conditions: mole ratio of sulfur trioxide and polyethers or other raw materials: 1:1; temperature: 30-60°C; reactor: falling film reactor.
Quality Standards & Test Methods
1. Physical and chemical indexes
Item
Physical and chemical indexes
High-enriched type
Low-enriched type
Actives, %, ≥
55.0
18.0 - 35.0
pH (25°C, 5% solution)
6.5 - 9.5
6.5 - 9.5
Density, g/mL, 25°C, approx
1.05
1.05
1,4-Dioxane, ppm, ≤
30
30
Test Methods
(1), Actives
GB/T 5173 Surface active agents and detergents-Determination of anionic-active matter by direct two-phase titration procedure
ISO 2271 Surface active agents -- Detergents -- Determination of anionic-active matter by manual or mechanical direct two-phase titration procedure
(2), pH
GB/T 6368 Surface active agents - Determination of pH of aqueous solution - Potentiometric method
ISO 4316 Surface active agents -- Determination of pH of aqueous solutions -- Potentiometric method
(3), Density
GB/T 4472 Determination of density and relative density for chemical products