Branched Dodecylbenzene Sulfonate Calcium Salt
time:2012-09-28 16:26:12,count:0
Characteristics    excellent emulsifying, dispersing, lubricating, adsorbing abilities.
Note    (1), Hardly biodegradable. Avoid to use if possible.
Synthesis
Currently, sulfonation reaction through continuous reactor (such as: falling film reactor) is the most widely used method for preparing sulfonates.
Generally, branched dodecylbenzene and sulfur trioxide react through reactor, then calcium oxide 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 alkyl benzenes 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
Liquid
Actives, %, ≥
60.0 - 70.0
pH (25°C, 5%, 50% isopropanol solution)
5.0 - 7.5
Test Methods