Sodium dibutylnaphthalenesulphonate
Time: 2012-09-29 16:36:36
Sodium dibutylnaphthalenesulphonate
Synonyms
Sodium dibutylnaphthalene sulfonate;
Sodium dibutylnaphthylsulfonate;
Sodium dibutylnapthalenesulfonate;
Dibutyl-naphthalene sulfonate, sodium salt;
Dibutylnaphthalenesulfonic acid sodium salt;
Naphthalenesulfonic Acid, Dibutyl-, Sodium Salt;
Category
Anionic Surfactant
>> Sulfonate
>> Aryl Sulfonate
>> Naphthyl Sulfonate
>> Linear Alkylnaphthyl Sulfonate
Chemical Numbering System
CASRN25417-20-3
EINECS246-960-6
Molecular Formula & Molecular Weight
Molecular Formula: C18H23NaO3S; C18H24O3S.Na
Molecular Weight: 342.43
Structure
Properties
Appearance    (1), light yellow transparent liquid; (2), beige solid.
Solubility    soluble in water.
Stability    stable.
Risk    Solid form: flammable material; irritation, moderate irritation to skin, eye, respiratory. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS (Rev.6) label:  
Liquid form: irritation, moderate irritation to skin, eye.
GHS (Rev.6) label:
Animal Toxicity
Table 1 Animal toxicity values
guinea pig oral LD50
1500mg/kg[1]
guinea pig subcutaneous LDLo
800mg/kg[1]
mouse oral LD50
1134mg/kg[1]
rat oral LD50
1250mg/kg[1]
Ecology    may be hazardous to environment. Water body should be given special attention.
Biodegradability    biodegradable.
Characteristics    excellent permeating, wetting, dispersing, emulsifying abilities. When system contains a small amount of sodium chloride, can be significantly enhanced permeating abilities. Certain resistance to inorganic electrolytes.
Synthesis
Naphthalene, butanol and concentrated sulfuric acid react through the sulfonation condensation reaction, then sodium hydroxide or sodium carbonate neutralizes, finally obtain product.
Quality Standards & Test Methods
1. Physical and chemical indexes
Item
Physical and chemical indexes
Liquid
Solid
Actives, %, ≥
25.0 - 50.0
60.0 - 65.0
pH (25°C, 1%)
7.0 - 8.5
7.0 - 8.5
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
2. Hazardous substances indexes
Item
Hazardous substances indexes
Liquid
Solid
Heavy metals (as Pb), mg/Kg, ≤
20
20
As, mg/Kg, ≤
3
3
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents - Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents - Determination of total arsenic
3. Product standards
(1), Chinese standards
(1a), HG/T 3513 Penetrating Agent BX
4. Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
Major Uses
1. Typical applications
Use as penetrating agent, wetting agent.
Use as emulsifying agent, dispersing agent.
2. Textile
Use as penetrating agent, wetting agent.
Widely used, but there are shortcomings that make textiles feel hard and dye bright decreases. Have been gradually replaced by other penetrating agent.
3. Rubber
Use as emulsifying agent, softening agent.
4. Paper
Use as wetting agent.
5. Agriculture
Synergist in pesticides, fertilizer.
Manufacturers
 
References
[1]: ChemIDplus. 25417-20-3, Sodium dibutylnapthalenesulfonate
Update: 20131025(1); 20170330(2);