Benzenesulfonic acid, 4-C10-13-sec-alkyl derivs.
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R: sec-C10-13.
Properties
Appearance    (1), pale brown to dark brown viscous liquid.
Solubility    slightly soluble in water.
Stability    stable.
Risk    Liquid form: flammable material; irritation, moderate irritation to skin, eye. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS (Rev.6) label:  
Ecology    may be hazardous to environment. Water body should be given special attention.
Biodegradability    hardly biodegradable.
Characteristics    excellent cleansing, foaming, emulsifying, wetting, dispersing, solubilizing 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.